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Articles 181 - 210 of 4868

Full-Text Articles in Physical Sciences and Mathematics

Zinc-Tiered Synthesis Of 3d Graphene For Monolithic Electrodes, Xiangfen Jiang, Ruiqing Li, Ming Hu, Zheng Hu, Dmitri Goldberg, Yoshio Bando, Xuebin Wang Jan 2019

Zinc-Tiered Synthesis Of 3d Graphene For Monolithic Electrodes, Xiangfen Jiang, Ruiqing Li, Ming Hu, Zheng Hu, Dmitri Goldberg, Yoshio Bando, Xuebin Wang

Australian Institute for Innovative Materials - Papers

A high-surface-area conductive cellular carbon monolith is highly desired as the optimal electrode for achieving high energy, power, and lifetime in electrochemical energy storage. 3D graphene can be regarded as a first-ranking member of cellular carbons with the pore-wall thickness down to mono/few-atomic layers. Current 3D graphenes, derived from either gelation or pyrolysis routes, still suffer from low surface area, conductivity, stability, and/or yield, being subjected to methodological inadequacies including patchy assembly, wet processing, and weak controllability. Herein, a strategy of zinc-assisted solid-state pyrolysis to produce a superior 3D graphene is established. Zinc unprecedentedly impregnates and delaminates a solid ("nonhollow") …

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Perovskite R3c Phase Agcuf3: Multiple Dirac Cones, 100% Spin Polarization And Its Thermodynamic Properties, Minquan Kuang, Tingzhou Li, Zhenxiang Cheng, Houari Khachai, Rabah Khenata, Tie Yang, Tingting Lin, Xiaotian Wang Jan 2019

Perovskite R3c Phase Agcuf3: Multiple Dirac Cones, 100% Spin Polarization And Its Thermodynamic Properties, Minquan Kuang, Tingzhou Li, Zhenxiang Cheng, Houari Khachai, Rabah Khenata, Tie Yang, Tingting Lin, Xiaotian Wang

Australian Institute for Innovative Materials - Papers

Very recently, experimentally synthesized R3c phase LaCuO3 was studied by Zhang, Jiao, Kou, Liao & Du [J. Mater. Chem. C (2018), 6, 6132-6137], and they found that this material exhibits multiple Dirac cones in its non-spin-polarized electronic structure. Motivated by this study, the focus here is on a new R3c phase material, AgCuF3, which has a combination of multiple Dirac cones and 100% spin polarization properties. Compared to the non-spin-polarized system LaCuO3, the spin-polarized Dirac behavior in AgCuF3 is intrinsic. The effects of on-site Coulomb interaction, uniform strain and spin-orbit coupling were added to examine the stability of its multiple …

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Rational Design Of Two-Dimensional Hybrid Co/N-Doped Carbon Nanosheet Arrays For Efficient Bi-Functional Electrocatalysis, Ningyan Cheng, Long Ren, Gilberto Casillas, Si Zhou, Jincheng Zhuang, Li Wang, Xun Xu, Shi Xue Dou, Yi Du Jan 2019

Rational Design Of Two-Dimensional Hybrid Co/N-Doped Carbon Nanosheet Arrays For Efficient Bi-Functional Electrocatalysis, Ningyan Cheng, Long Ren, Gilberto Casillas, Si Zhou, Jincheng Zhuang, Li Wang, Xun Xu, Shi Xue Dou, Yi Du

Australian Institute for Innovative Materials - Papers

Transition metals with desirable valence states have been proposed as efficient non-noble-metal electrocatalytic systems for selective water splitting. In this work, two-dimensional (2D) nitrogen-doped leaf-like carbon matrix arrays functionalized with multi-valence-state transition metal (cobalt) hybrids were successfully prepared by in situ calcination of the corresponding bimetallic leaf-like zeolitic imidazolate framework (ZIF-L) in an inert atmosphere. The 2D morphology of the matrix along with the particle size and surface valence state of the anchored particles has been successfully controlled via precisely adjusting the Co2+/(Zn2+ + Co2+) ratio in the bimetallic ZIF-L precursor. Electrochemical measurements show that the kinetics of and stability …

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Strategies For Neural Control Of Prosthetic Limbs: From Electrode Interfacing To 3d Printing, Catherine G.Y. Ngan, Robert M. I Kapsa, Peter Choong Jan 2019

Strategies For Neural Control Of Prosthetic Limbs: From Electrode Interfacing To 3d Printing, Catherine G.Y. Ngan, Robert M. I Kapsa, Peter Choong

Australian Institute for Innovative Materials - Papers

Limb amputation is a major cause of disability in our community, for which motorised prosthetic devices offer a return to function and independence. With the commercialisation and increasing availability of advanced motorised prosthetic technologies, there is a consumer need and clinical drive for intuitive user control. In this context, rapid additive fabrication/prototyping capacities and biofabrication protocols embrace a highly-personalised medicine doctrine that marries specific patient biology and anatomy to high-end prosthetic design, manufacture and functionality. Commercially-available prosthetic models utilise surface electrodes that are limited by their disconnect between mind and device. As such, alternative strategies of mind-prosthetic interfacing have been …

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Sheath-Run Artificial Muscles, Jiuke Mu, Monica Jung De Andrade, Shaoli Fang, Xuemin Wang, Enlai Gao, Na Li, Shi Hyeong Kim, Hongzhi Wang, Chengyi Hou, Qinghong Zhang, Meifang Zhu, Dong Qian, Hongbing Lu, Dharshika Kongahage, Sepehr Talebian, Javad Foroughi, Geoffrey M. Spinks, Hyun Kim, Taylor H. Ware, Hyeon Jun Sim, Dong Yeop Lee, Yongwoo Jang, Seon Jeong Kim, Ray H. Baughman Jan 2019

Sheath-Run Artificial Muscles, Jiuke Mu, Monica Jung De Andrade, Shaoli Fang, Xuemin Wang, Enlai Gao, Na Li, Shi Hyeong Kim, Hongzhi Wang, Chengyi Hou, Qinghong Zhang, Meifang Zhu, Dong Qian, Hongbing Lu, Dharshika Kongahage, Sepehr Talebian, Javad Foroughi, Geoffrey M. Spinks, Hyun Kim, Taylor H. Ware, Hyeon Jun Sim, Dong Yeop Lee, Yongwoo Jang, Seon Jeong Kim, Ray H. Baughman

Australian Institute for Innovative Materials - Papers

Although guest-filled carbon nanotube yarns provide record performance as torsional and tensile artificialmuscles, they are expensive, and only part of themuscle effectively contributes to actuation.We describe a muscle type that provides higher performance, in which the guest that drives actuation is a sheath on a twisted or coiled core that can be an inexpensive yarn. This change from guest-filled to sheath-run artificial muscles increases the maximum work capacity by factors of 1.70 to 2.15 for tensile muscles driven electrothermally or by vapor absorption. A sheath-run electrochemical muscle generates 1.98 watts per gram of average contractile power-40 times that for human …

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Manipulation Of The Electronic Transport Properties Of Charge-Transfer Oxide Thin Films Of Ndni O3 Using Static And Electric-Field-Controllable Dynamic Lattice Strain, Jian-Min Yan, Meng Xu, Ting-Wei Chen, Ming Yang, Fei Liu, Hui Wang, Lei Guo, Zhi-Xue Xu, Fang-Yuan Fan, Guan-Yin Gao, Si-Ning Dong, Xiao-Guang Li, Hao Luo, Weiyao Zhao, Ren-Kui Zheng Jan 2019

Manipulation Of The Electronic Transport Properties Of Charge-Transfer Oxide Thin Films Of Ndni O3 Using Static And Electric-Field-Controllable Dynamic Lattice Strain, Jian-Min Yan, Meng Xu, Ting-Wei Chen, Ming Yang, Fei Liu, Hui Wang, Lei Guo, Zhi-Xue Xu, Fang-Yuan Fan, Guan-Yin Gao, Si-Ning Dong, Xiao-Guang Li, Hao Luo, Weiyao Zhao, Ren-Kui Zheng

Australian Institute for Innovative Materials - Papers

Using perovskite-type charge-transfer oxide thin films of NdNiO3 (NNO) as a model system, we demonstrate that the effects of lattice strain on the electronic transport properties can be more comprehensively understood by growing NNO films on a number of (001)-, (011)-, and (111)-cut single-crystal substrates with different lattice mismatches including the relaxor-based 0.31Pb(In1/2Nb1/2)O3-0.35Pb(Mg1/3Nb2/3)O3-0.34PbTiO3 (PIN-PMN-PT) and 0.71Pb(Mg1/3Nb2/3)O3-0.29PbTiO3 (PMN-PT) ferroelectric (FE) single crystals. In addition to the static lattice strains from conventional substrates (e.g., SrTiO3, LaAlO3), we in situ impose in-plane compressive or tensile strains to NNO films using FE/ferroelastic domain switching of FE substrates. An unprecedented electric-field-induced large out-of-plane compressive strain …

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P2-Type Na2/3ni1/3mn2/3o2as A Cathode Materialwith High-Rate And Long-Life For Sodium Ionstorage, Qiannan Liu, Zhe Hu, Mingzhe Chen, Chao Zou, Huile Jin, Shun Wang, Qinfen Gu, Shulei Chou Jan 2019

P2-Type Na2/3ni1/3mn2/3o2as A Cathode Materialwith High-Rate And Long-Life For Sodium Ionstorage, Qiannan Liu, Zhe Hu, Mingzhe Chen, Chao Zou, Huile Jin, Shun Wang, Qinfen Gu, Shulei Chou

Australian Institute for Innovative Materials - Papers

Layered P2-type Na 2/3 Ni 1/3 Mn 2/3 O 2 was successfully synthesized through a facile sol-gel method and subsequent heat treatment. Resulting from different phase transformation and sodium ion diffusion rates, its electrochemical performance is highly related to the cut-off voltage and the electrolyte used. When the cut-off voltage is set up to 4.5 V or lowered to 1.5 V, capacity fade happens due to the occurrence of P2-O2 transformation and electrolyte decomposition or the redox reaction of the Mn 4+ /Mn 3+ ionic pair and P2-P2′ transformation. The electrode maintained 89.0 mA h g -1 with good cycling …

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A Non-Enzymatic Photoelectrochemical Glucose Sensor Based On Bivo4 Electrode Under Visible Light, Shan Wang, Shaoping Li, Wenwen Wang, Mengting Zhao, Jiaofeng Liu, Haifeng Feng, Yiming Chen, Qi Gu, Yi Du, Weichang Hao Jan 2019

A Non-Enzymatic Photoelectrochemical Glucose Sensor Based On Bivo4 Electrode Under Visible Light, Shan Wang, Shaoping Li, Wenwen Wang, Mengting Zhao, Jiaofeng Liu, Haifeng Feng, Yiming Chen, Qi Gu, Yi Du, Weichang Hao

Australian Institute for Innovative Materials - Papers

A non-enzymatic photoelectrochemical (PEC) glucose sensor based on nanoporous bismuth vanadate (BiVO 4 ) electrode is fabricated on fluorine doped tin oxide by electrochemical deposition. The photogenerated holes of BiVO 4 show a strong oxidizing ability, with adsorption of glucose on the surface of BiVO 4 , agreeing well with the classical Langmuir adsorption model. Under visible light irradiation, the glucose molecules adsorbed on the BiVO 4 electrode surface can be oxidized by the photogenerated holes, which results in increased photocurrent. The fabricated BiVO 4 non-enzymatic photoelectrochemical sensor shows outstanding catalytic activity, favourable selectivity, good reproducibility, and long-term stability for …

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In Situ Incorporation Of Nanostructured Antimony In An N-Doped Carbon Matrix For Advanced Sodium-Ion Batteries, Zhibin Wu, Bernt Johannessen, Wenchao Zhang, Wei Kong Pang, Jianfeng Mao, Hua-Kun Liu, Zaiping Guo Jan 2019

In Situ Incorporation Of Nanostructured Antimony In An N-Doped Carbon Matrix For Advanced Sodium-Ion Batteries, Zhibin Wu, Bernt Johannessen, Wenchao Zhang, Wei Kong Pang, Jianfeng Mao, Hua-Kun Liu, Zaiping Guo

Australian Institute for Innovative Materials - Papers

Herein, a facile one-step and solvent-free pyrolysis method was developed to control the synthesis of nanostructured Sb embedded in an N-doped carbon matrix (Sb@G x N y -T, where T, G x and N y denote the annealing temperature and the mass (g) of glucose and NH 4 Cl used in the process, respectively). By adjusting these parameters, hybrid architectures can be in situ constructed, including hollow Sb embedded in holeless carbon matrixes (Sb@G 0.25 N 0.5 -950) and Sb nanoplates embedded in holey carbon matrixes (Sb@G 0.25 N 0.25 -950). Our findings suggest that the formation of diverse nanostructures …

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Synthesis Of Cose2-Snse2 Nanocube-Coated Nitrogen-Doped Carbon (Nc) As Anode For Lithium And Sodium Ion Batteries, Jin Bai, Huimin Wu, Shiquan Wang, Guangxue Zhang, Chuanqi Feng, Hua-Kun Liu Jan 2019

Synthesis Of Cose2-Snse2 Nanocube-Coated Nitrogen-Doped Carbon (Nc) As Anode For Lithium And Sodium Ion Batteries, Jin Bai, Huimin Wu, Shiquan Wang, Guangxue Zhang, Chuanqi Feng, Hua-Kun Liu

Australian Institute for Innovative Materials - Papers

CoSe2-SnSe2/NC nanocubes (CSNC@NC) coated by nitrogen-doped carbon (NC) were synthesized successfully by an ordinary pyrazole polymerization and carbonization process. In comparison with bare CSNC, the CSNC@NC composite exhibited good structural stability and improved electrical conductivity when used as anode. The CSNC@NC electrode showed a stable Li storage capacity (730.41 mAh g−1 over 100 cycles at 0.2 A g−1) and excellent rate performance (402.10 mAh g−1 at 2 A g−1). For Na storage, the discharge capacity could be maintained 279.3 mAh g−1 over 100 cycles at 0.2 A g−1; the lower capacity than that for Li storage maybe caused by the …

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Ultrasonic Spray Deposition Of Tio2 Electron Transport Layers For Reproducible And High Efficiency Hybrid Perovskite Solar Cells, Jingsong Sun, Alexander Pascoe, Steffen Meyer, Qijie Wu, Enrico Della Gaspera, Sonia Raga, Tian Zhang, Andrew Nattestad, Udo Bach, Yi-Bing Cheng, Jacek Jasieniak Jan 2019

Ultrasonic Spray Deposition Of Tio2 Electron Transport Layers For Reproducible And High Efficiency Hybrid Perovskite Solar Cells, Jingsong Sun, Alexander Pascoe, Steffen Meyer, Qijie Wu, Enrico Della Gaspera, Sonia Raga, Tian Zhang, Andrew Nattestad, Udo Bach, Yi-Bing Cheng, Jacek Jasieniak

Australian Institute for Innovative Materials - Papers

The fabrication of high efficiency perovskite solar cells at larger scales will rely on the optimized deposition conditions of every layer using scalable methodologies. Most current perovskite devices that employ the archetypal TiO2 hole blocking layer utilise a simple air-brush approach. This approach is not scalable as it results in significant layer inhomogeneity across larger devices areas. To overcome this inherent limitation, in this work we use ultrasonic spray deposition as an alternative approach for the TiO2 deposition. Focusing on identical reaction chemistries as for air-brush, namely bis(isopropoxide)-bis(acetylacetonate) titanium (IV) based solutions, we find that under optimized conditions smooth TiO2 …

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Constructing Coo/Co3s4 Heterostructures Embedded In N-Doped Carbon Frameworks For High-Performance Sodium-Ion Batteries, Can Guo, Wenchao Zhang, Yi Liu, Jiapeng He, Shun Yang, Mingkai Liu, Qinghong Wang, Zaiping Guo Jan 2019

Constructing Coo/Co3s4 Heterostructures Embedded In N-Doped Carbon Frameworks For High-Performance Sodium-Ion Batteries, Can Guo, Wenchao Zhang, Yi Liu, Jiapeng He, Shun Yang, Mingkai Liu, Qinghong Wang, Zaiping Guo

Australian Institute for Innovative Materials - Papers

Heterostructures are attractive for advanced energy storage devices due to their rapid charge transfer kinetics, which is of benefit to the rate performance. The rational and facile construction of heterostructures with satisfactory electrochemical performance, however, is still a great challenge. Herein, ultrafine hetero-CoO/Co3S4 nanoparticles embedded in N-doped carbon frameworks (CoO/Co3S4@N-C) are successfully obtained by employing metal-organic frameworks as precursors. As anodes for sodium ion batteries, the CoO/Co3S4@N-C electrodes exhibit high specific capacity (1029.5 mA h g−1 at 100 mA g−1) and excellent rate capability (428.0 mA h g−1 at 5 A g−1), which may be attributed to their enhanced electric …

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Preparation And Physical Properties Of A Cr3al Filmwith A Do3structure, Weiqi Zhao, Xuefang Dai, X M. Zhang, Z Mo, Xiaotian Wang, G F. Chen, Zhenxiang Cheng, Guodong Liu Jan 2019

Preparation And Physical Properties Of A Cr3al Filmwith A Do3structure, Weiqi Zhao, Xuefang Dai, X M. Zhang, Z Mo, Xiaotian Wang, G F. Chen, Zhenxiang Cheng, Guodong Liu

Australian Institute for Innovative Materials - Papers

A Cr3Al compound with a DO3 structure has previously been predicted to be nearly half metal and a promising spintronics material; however, its synthesis has not been reported. Here, a Cr3Al compound with a DO3 structure is successfully prepared in thin-film form by the magnetron sputtering method. It was found that the substrate temperature is crucial to the atomic ordering, thin-film density and lattice constant. The lattice constant varies with different substrate temperatures and is smaller than the theoretical equilibrium lattice constant. Theoretical investigations on the electronic structures and magnetic properties indicate that the Cr3Al compound with a DO3 structure …

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Time-Resolved Imaging Of Magnetoelastic Waves By The Cotton-Mouton Effect, Tomosato Hioki, Yusuke Hashimoto, Tom H. Johansen, Eiji Saitoh Jan 2019

Time-Resolved Imaging Of Magnetoelastic Waves By The Cotton-Mouton Effect, Tomosato Hioki, Yusuke Hashimoto, Tom H. Johansen, Eiji Saitoh

Australian Institute for Innovative Materials - Papers

We investigate the propagation dynamics of magneto-elastic waves in an out-of-plane (OP) magnetized film using time-resolved magneto-optical (TRMO) microscopy based on the Cotton-Mouton effect. In OP magnetized films, spin precession induces a temporal change in the in-plane component of magnetization (m), which can be measured through birefringence induced by m, or the Cotton-Mouton effect (CME). Here we develop an imaging method based on CME, realizing the observation of stress-driven magneto-elastic waves in an OP magnetized film. This result expands the focus of TRMO microscopy, allowing investigation of magneto-elastic waves in OP magnetized films.

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Electrocatalytically Inactive Sns2 Promotes Water Adsorption/Dissociation On Molybdenum Dichalcogenides For Accelerated Alkaline Hydrogen Evolution, Yaping Chen, Xingyong Wang, Mengmeng Lao, Kun Rui, Xiaobo Zheng, Haibo Yu, Jing Ma, Shi Xue Dou, Wenping Sun Jan 2019

Electrocatalytically Inactive Sns2 Promotes Water Adsorption/Dissociation On Molybdenum Dichalcogenides For Accelerated Alkaline Hydrogen Evolution, Yaping Chen, Xingyong Wang, Mengmeng Lao, Kun Rui, Xiaobo Zheng, Haibo Yu, Jing Ma, Shi Xue Dou, Wenping Sun

Australian Institute for Innovative Materials - Papers

Molybdenum dichalcogenides, in particular, MoS2 and MoSe2, are very promising nonprecious metal-based electrocatalysts for hydrogen evolution reaction (HER) in acidic media. They exhibit inferior alkaline HER activity, however, due to the sluggish water dissociation process. Here, we design and synthesize new molybdenum dichalcogenide-based heterostructures with the basal planes decorated with SnS2 quantum dots towards enhanced alkaline HER activity. The electrochemical results reveal that the alkaline hydrogen evolution kinetics of molybdenum dichalcogenides is substantially accelerated after incorporation of SnS2 quantum dots. The optimal MoSe2/SnS2 heterostructure delivers a much lower overpotential of 285 mV than MoSe2 (367 mV) to reach a current …

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Recent Progress On Germanene And Functionalized Germanene: Preparation, Characterizations, Applications, And Challenges, Nana Liu, Guyue Bo, Yani Liu, Xun Xu, Yi Du, Shi Xue Dou Jan 2019

Recent Progress On Germanene And Functionalized Germanene: Preparation, Characterizations, Applications, And Challenges, Nana Liu, Guyue Bo, Yani Liu, Xun Xu, Yi Du, Shi Xue Dou

Australian Institute for Innovative Materials - Papers

2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim A new family of single-atom-thick 2D germanium-based materials with graphene-like atomic arrangement, germanene and functionalized germanene, has attracted intensive attention due to their large bandgap and easily tailored electronic properties. Unlike carbon atoms in graphene, germanium atoms tend to adopt mixed sp 2 /sp 3 hybridization in germanene, which makes it chemically active on the surface and allows its electronic states to be easily tuned by chemical functionalization. Impressive achievements in terms of the applications in energy storage and catalysis have been reported by using germanene and functionalized germanene. Herein, the fabrication …

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Structural Insight Into Layer Gliding And Lattice Distortion In Layered Manganese Oxide Electrodes For Potassium-Ion Batteries, Qing Zhang, Christophe R. Didier, Wei Kong Pang, Yajie Liu, Zhijie Wang, Sean Li, Vanessa K. Peterson, Jianfeng Mao, Zaiping Guo Jan 2019

Structural Insight Into Layer Gliding And Lattice Distortion In Layered Manganese Oxide Electrodes For Potassium-Ion Batteries, Qing Zhang, Christophe R. Didier, Wei Kong Pang, Yajie Liu, Zhijie Wang, Sean Li, Vanessa K. Peterson, Jianfeng Mao, Zaiping Guo

Australian Institute for Innovative Materials - Papers

Potassium-ion batteries (PIBs) are an emerging, affordable, and environmentally friendly alternative to lithium-ion batteries, with their further development driven by the need for suitably performing electrode materials capable of reversibly accommodating the relatively large K+. Layer-structured manganese oxides are attractive as electrodes for PIBs, but suffer from structural instability and sluggish kinetics of K+ insertion/extraction, leading to poor rate capability. Herein, cobalt is successfully introduced at the manganese site in the KxMnO2 layered oxide electrode material and it is shown that with only 5% Co, the reversible capacity increases by 30% at 22 mA g-1 and by 92% at 440 …

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A New Lithium-Ion Conductor Litasio5: Theoretical Prediction, Materials Synthesis, And Ionic Conductivity, Qi Wang, Jian-Fang Wu, Ziheng Lu, Francesco Ciucci, Wei Kong Pang, Xin Guo Jan 2019

A New Lithium-Ion Conductor Litasio5: Theoretical Prediction, Materials Synthesis, And Ionic Conductivity, Qi Wang, Jian-Fang Wu, Ziheng Lu, Francesco Ciucci, Wei Kong Pang, Xin Guo

Australian Institute for Innovative Materials - Papers

Owing to the nonleakage and incombustibility, solid electrolytes are crucial for solving the safety issues of rechargeable lithium batteries. In this work, a new class of solid electrolyte, acceptor-doped LiTaSiO5, is designed and synthesized based on the concerted migration mechanism. When Zr4+ is doped to the Ta5+ sites in LiTaSiO5, the high-energy lattice sites are partly occupied by the introduced lithium ions, and the lithium ions at those sites interact with the lithium ions placed in the low-energy sites, thereby favoring the concerted motion of lithium ions and lowering the energy barrier for ion transport. Therefore, the concerted migration of …

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Electrical Properties Of Yttrium Calcium Oxyborate Crystal Annealed At High Temperature And Low Oxygen Partial Pressure, Shiwei Tian, Lili Li, Feifei Chen, Chao Jiang, Fapeng Yu, Yanlu Li, Xiulan Duan, Zhengping Wang, Shujun Zhang, Xian Zhao Jan 2019

Electrical Properties Of Yttrium Calcium Oxyborate Crystal Annealed At High Temperature And Low Oxygen Partial Pressure, Shiwei Tian, Lili Li, Feifei Chen, Chao Jiang, Fapeng Yu, Yanlu Li, Xiulan Duan, Zhengping Wang, Shujun Zhang, Xian Zhao

Australian Institute for Innovative Materials - Papers

The yttrium calcium oxyborate crystal (YCa 4 O(BO 3 ) 3 , YCOB) has been actively studied for high-temperature piezoelectric sensing applications. In this work, the stability of electric properties of YCOB crystal annealed in critical conditions (high-temperatures of 900-1100 °C with a low oxygen partial pressure of 4 x 10 −6 atm for 24 h) was investigated and the recovery mechanism for the electrical resisitivity, dielectric permittivity and dielectric loss were studied, taking advantage of the X-ray photoelectron spectra and the first principle calculations. The electrical resistivity of the annealed YCOB crystal was slightly decreased when compared to the …

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(Bi0.51 Na0.47)Tio3 Based Lead Free Ceramics With High Energy Density And Efficiency, Yu Huang, Fei Li, Hua Hao, Fangquan Xia, Hanxing Liu, Shujun Zhang Jan 2019

(Bi0.51 Na0.47)Tio3 Based Lead Free Ceramics With High Energy Density And Efficiency, Yu Huang, Fei Li, Hua Hao, Fangquan Xia, Hanxing Liu, Shujun Zhang

Australian Institute for Innovative Materials - Papers

Dielectric ceramics with high energy storage density and energy efficiency play an important role in high power energy storage applications. In this work, lead free relaxor ferroelectric ceramics in (1-x)Bi 0.51 Na 0.47 TiO 3 - xBa(Zr 0.3 Ti 0.7 )O 3 (BNT-BZT100x: x = 0.20, 0.30, 0.40 and 0.50) system are fabricated by conventional solid-state sintering method. The BNT-BZT100x ceramics are sintered dense with minimal pores, exhibiting pseudocubic symmetry and strong relaxor characteristic. A high energy storage density of 3.1 J/cm 3 and high energy efficiency of 91% are simultaneously achieved in BNT-BZT40 ceramic with 0.1 mm in thickness, …

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Extremely Large Non-Equilibrium Tunnel Magnetoresistance Ratio In Corhmnge Based Magnetic Tunnel Junction By Interface Modification, Yu Feng, Zhenxiang Cheng, Xiaotian Wang Jan 2019

Extremely Large Non-Equilibrium Tunnel Magnetoresistance Ratio In Corhmnge Based Magnetic Tunnel Junction By Interface Modification, Yu Feng, Zhenxiang Cheng, Xiaotian Wang

Australian Institute for Innovative Materials - Papers

Equiatomic quaternary Heusler compounds (EQHCs) generally have the advantages of high Curie temperature, large spin polarization and long spin diffusion length, and they are regarded as one of the most promising candidates for spintronics devices. Herein, we report a theoretical investigation on an EQHC CoRhMnGe based magnetic tunnel junction (MTJ) with (i) MnGe-terminated interface and (ii) modified pure Mn terminated interface, i.e., MnMn-terminated interface. By employing first principle calculations combined with non-equilibrium Green's function, the local density of states (LDOS), transmission coefficient, spin-polarized current, tunnel magnetoresistance (TMR) ratio and spin injection efficiency (SIE) as a function of bias voltage are …

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Public Health Risks Associated With Heavy Metal And Microbial Contamination Of Drinking Water In Australia, Paul J. Molino, Richard Bentham, Michael J. Higgins, Jason Hinds, Harriet Whiley Jan 2019

Public Health Risks Associated With Heavy Metal And Microbial Contamination Of Drinking Water In Australia, Paul J. Molino, Richard Bentham, Michael J. Higgins, Jason Hinds, Harriet Whiley

Australian Institute for Innovative Materials - Papers

Recently in Australia concerns have been raised regarding the contamination of municipal drinking water supplies with lead. This is of particular concern to children due to the impact of lead exposure on cognitive development and as such these findings have received much media attention. The response from legislators has been swift, and The Victorian School Building Authority has announced that all new schools and school upgrade works will only use lead-free tapware and piping systems. However, while the immediate replacement of lead-containing brass fittings may seem a logical and obvious response, it does not consider the potential implications on microbial …

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Sulfur-Based Electrodes That Function Via Multielectron Reactions For Room-Temperature Sodium-Ion Storage, Yunxiao Wang, Weihong Lai, Yun-Xia Wang, Shulei Chou, Xinping Ai, Hanxi Yang, Yuliang Cao Jan 2019

Sulfur-Based Electrodes That Function Via Multielectron Reactions For Room-Temperature Sodium-Ion Storage, Yunxiao Wang, Weihong Lai, Yun-Xia Wang, Shulei Chou, Xinping Ai, Hanxi Yang, Yuliang Cao

Australian Institute for Innovative Materials - Papers

Emerging rechargeable sodium-ion storage systems—sodium-ion and room-temperature sodium–sulfur (RT-NaS) batteries—are gaining extensive research interest as low-cost options for large-scale energy-storage applications. Owing to their abundance, easy accessibility, and unique physical and chemical properties, sulfur-based materials, in particular metal sulfides (MSx) and elemental sulfur (S), are currently regarded as promising electrode candidates for Na-storage technologies with high capacity and excellent redox reversibility based on multielectron conversion reactions. Here, we present current understanding of Na-storage mechanisms of the S-based electrode materials. Recent progress and strategies for improving electronic conductivity and tolerating volume variations of the MSx anodes in Na-ion batteries are reviewed. …

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Modeling Emergent Properties In The Brain Using Tissue Models To Investigate Neurodegenerative Disease, Alexander R. Harris, Patrick H. Mcgivern, Lezanne Ooi Jan 2019

Modeling Emergent Properties In The Brain Using Tissue Models To Investigate Neurodegenerative Disease, Alexander R. Harris, Patrick H. Mcgivern, Lezanne Ooi

Australian Institute for Innovative Materials - Papers

Here we describe emergent properties of the brain and the key challenges associated with modelling them in vitro. Modeling emergent properties of the brain will provide insights into brain function, development, and disease.

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Layer-Structured Niobium Oxides And Their Analogues For Advanced Hybrid Capacitors, Jiaqin Liao, Wei Ni, Caiyun Wang, Jianmin Ma Jan 2019

Layer-Structured Niobium Oxides And Their Analogues For Advanced Hybrid Capacitors, Jiaqin Liao, Wei Ni, Caiyun Wang, Jianmin Ma

Australian Institute for Innovative Materials - Papers

© 2019 Elsevier B.V. Niobium-based oxides including niobium oxide (Nb2O5) and their analogues with quasi-2D network of open and stable Wadsley-Roth shear crystal structure, have gained great interest for advanced hybrid supercapacitors due to their outstanding rate capability derived from the intercalation pseudocapacitive kinetics. To realize their full potential as battery-type anode electrodes for supercapacitor, various strategies have been effectively implemented to overcome the drawbacks especially the poor intrinsic electrical conductivity, including structure design, surface modification, conductivity enhancement, and electrode engineering. Here, we provide a comprehensive overview of the latest progress of Nb-based oxides for high-rate hybrid supercapacitors in the …

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Smart Graphene-Cellulose Paper For 2d Or 3d "Origami-Inspired" Human Stem Cell Support And Differentiation, Jianfeng Li, Xiao Liu, Eva Tomaskovic-Crook, Jeremy Micah Crook, Gordon G. Wallace Jan 2019

Smart Graphene-Cellulose Paper For 2d Or 3d "Origami-Inspired" Human Stem Cell Support And Differentiation, Jianfeng Li, Xiao Liu, Eva Tomaskovic-Crook, Jeremy Micah Crook, Gordon G. Wallace

Australian Institute for Innovative Materials - Papers

Graphene-based materials represent advanced platforms for tissue engineering and implantable medical devices. From a clinical standpoint, it is essential that these materials are produced using non-toxic and non-hazardous methods, and have predictable properties and reliable performance under variable physiological conditions; especially when used with a cellular component. Here we describe such a biomaterial, namely smart graphene-cellulose (G-C) paper, and its suitability for traditional planar two-dimensional (2D) or three-dimensional (3D) human cell support, verified by adipose-derived stem cell (ADSC) culture and osteogenic differentiation. G-C paper is prepared using commercially available cellulose tissue paper as a substrate that is coated by immersion-deposition …

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Nitrogen/Sulfur Dual-Doping Of Reduced Graphene Oxide Harvesting Hollow Znsns3 Nano-Microcubes With Superior Sodium Storage, Xiaojing Liu, Youchen Hao, Jie Shu, Hirbod Maleki Kheimeh Sari, Liangxu Lin, Huari Kou, Jianwei Li, Wen Liu, Bo Yan, Dejun Li, Jiujun Zhang, Xifei Li Jan 2019

Nitrogen/Sulfur Dual-Doping Of Reduced Graphene Oxide Harvesting Hollow Znsns3 Nano-Microcubes With Superior Sodium Storage, Xiaojing Liu, Youchen Hao, Jie Shu, Hirbod Maleki Kheimeh Sari, Liangxu Lin, Huari Kou, Jianwei Li, Wen Liu, Bo Yan, Dejun Li, Jiujun Zhang, Xifei Li

Australian Institute for Innovative Materials - Papers

Bimetallic sulfides have exhibited promising applications in advanced sodium-ion batteries (SIBs) due to their relatively high electronic conductivity and electrochemical activity. In this study, for the first time, the N/S dual-doped reduced graphene oxide (rGO) encapsulating hollow ZnSnS3 nano-microcubes (N/S-rGO@ZnSnS3) is designed to improve the sluggish reaction kinetics, poor cycling stability and unsatisfactory rate capability of metal sulfides. To examine this design, the cycling stability and rate capability of the desired anode material is studied in detail. It is found that N/S-rGO@ZnSnS3 hybrid delivers a high discharge capacity of 501.7 mAh g−1 after 100 cycles at 0.1 A g−1, and …

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Moss-Derived Mesoporous Carbon As Bi-Functional Electrode Materials For Lithium-Sulfur Batteries And Supercapacitors, Wen Lei, Haipeng Liu, Junlei Xiao, Yang Wang, Liangxu Lin Jan 2019

Moss-Derived Mesoporous Carbon As Bi-Functional Electrode Materials For Lithium-Sulfur Batteries And Supercapacitors, Wen Lei, Haipeng Liu, Junlei Xiao, Yang Wang, Liangxu Lin

Australian Institute for Innovative Materials - Papers

In this work, we reported a moss-derived biomass porous carbon (MPC) as a bi-functional electrode material for both the lithium-sulfur battery and the supercapacitor. The MPC was prepared from a high-temperature calcination procedure using the moss as the carbonaceous precursor. Using NaOH, the MPC was activated to give a mesoporous structure with a high specific surface area (1057.1 m2 g−1) and large pore volume (0.72 cm3 g−1). When it was used as the cathode material in lithium-sulfur batteries, the MPC material realized a sulfur loading and exhibited a remarkably improved electrochemical performance, i.e., a high discharge capacity of 1070 mAh …

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Body Heat Powers Future Electronic Skins, Ruoming Tian, Yuqing Liu, Kunihito Koumoto, Jun Chen Jan 2019

Body Heat Powers Future Electronic Skins, Ruoming Tian, Yuqing Liu, Kunihito Koumoto, Jun Chen

Australian Institute for Innovative Materials - Papers

© 2019 Elsevier Inc. Ruoming Tian recently joined the Mark Wainwright Analytical Centre as an XRD research assistant at the University of New South Wales. She was formerly a Research Scientist at the Toyota Physical and Chemical Research Institute in Japan (2015–2018) and received her PhD from the University of New South Wales in 2014. Her research interests focus on the nano- and micro-materials, flexible hybrid materials, and smart devices for harvesting both high- and low-grade thermal energy. She has published 2 book chapters and 18 peer-reviewed articles and delivered more than 15 talks at international conferences and leading research …

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Two-Dimensional Magnets: Forgotten History And Recent Progress Towards Spintronic Applications, David L. Cortie, Grace L. Causer, Kirrily C. Rule, H Fritzsche, Wolfgang Kreuzpaintner, Frank Klose Jan 2019

Two-Dimensional Magnets: Forgotten History And Recent Progress Towards Spintronic Applications, David L. Cortie, Grace L. Causer, Kirrily C. Rule, H Fritzsche, Wolfgang Kreuzpaintner, Frank Klose

Australian Institute for Innovative Materials - Papers

The recent discovery of 2D magnetic order in van der Waals materials has stimulated a renaissance in the field of atomically thin magnets. This has led to promising demonstrations of spintronic functionality such as tunneling magnetoresistance. The frantic pace of this emerging research, however, has also led to some confusion surrounding the underlying phenomena of phase transitions in 2D magnets. In fact, there is a rich history of experimental precedents beginning in the 1960s with quasi-2D bulk magnets and progressing to the 1980s using atomically thin sheets of elemental metals. This review provides a holistic discussion of the current state …

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