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Articles 541 - 570 of 4868
Full-Text Articles in Physical Sciences and Mathematics
Semiconductor Solid-Solution Nanostructures: Synthesis, Property Tailoring, And Applications, Baodan Liu, Jing Li, Wenjin Yang, Xinglai Zhang, Xin Jiang, Yoshio Bando
Semiconductor Solid-Solution Nanostructures: Synthesis, Property Tailoring, And Applications, Baodan Liu, Jing Li, Wenjin Yang, Xinglai Zhang, Xin Jiang, Yoshio Bando
Australian Institute for Innovative Materials - Papers
The innovation of band-gap engineering in advanced materials caused by the alloying of different semiconductors into solid-solution nanostructures provides numerous opportunities and advantages in optoelectronic property tailoring. The semiconductor solid-solution nanostructures have multifarious emission wavelength, adjustability of absorption edge, tunable electrical resistivity, and cutting-edge photoredox capability, and these advantages can be rationalized by the assorted synthesis strategies such as, binary, ternary, and quaternary solid-solutions. In addition, the abundance of elements in groups IIB, IIIA, VA, VIA, and VIIA provides sufficient room to tailor-make the semiconductor solid-solution nanostructures with the desired properties. Recent progress of semiconductor solid-solution nanostructures including synthesis strategies, …
Phosphorus-Based Materials As The Anode For Sodium-Ion Batteries, Fuhua Yang, Hong Gao, Jun Chen, Zaiping Guo
Phosphorus-Based Materials As The Anode For Sodium-Ion Batteries, Fuhua Yang, Hong Gao, Jun Chen, Zaiping Guo
Australian Institute for Innovative Materials - Papers
No abstract provided.
Mapping For The Future: Business Intelligence Tool To Map Regional Housing Stock, Murad Safadi, Jun Ma, Rohan Wickramasuriya, Daniel J. Daly, Pascal Perez, Georgios Kokogiannakis
Mapping For The Future: Business Intelligence Tool To Map Regional Housing Stock, Murad Safadi, Jun Ma, Rohan Wickramasuriya, Daniel J. Daly, Pascal Perez, Georgios Kokogiannakis
SMART Infrastructure Facility - Papers
The amount of data available and the lack of data integration represent an increasing challenge to effective planning for government agencies. Integration of data from multiple sources has the potential to enable a user to draw valuable insights, which can be used to enhance service targeting and delivery, and to improve program evaluation. In recognition of the need to improve data integration the University of Wollongong and the NSW Office of Environment and Heritage (OEH) partnered to create an integrated housing stock database for the Illawarra region. The database serves as the backbone for an online and interactive Housing Stock …
Hybrid Method For Building Extraction In Vegetation-Rich Urban Areas From Very High-Resolution Satellite Imagery, Ajith Jayasekare, Rohan Wickramasuriya, Mohammad-Reza Namazi-Rad, Pascal Perez, Gaurav Singh
Hybrid Method For Building Extraction In Vegetation-Rich Urban Areas From Very High-Resolution Satellite Imagery, Ajith Jayasekare, Rohan Wickramasuriya, Mohammad-Reza Namazi-Rad, Pascal Perez, Gaurav Singh
SMART Infrastructure Facility - Papers
A continuous update of building information is necessary in today's urban planning. Digital images acquired by remote sensing platforms at appropriate spatial and temporal resolutions provide an excellent data source to achieve this. In particular, high-resolution satellite images are often used to retrieve objects such as rooftops using feature extraction. However, high-resolution images acquired over built-up areas are associated with noises such as shadows that reduce the accuracy of feature extraction. Feature extraction heavily relies on the reflectance purity of objects, which is difficult to perfect in complex urban landscapes. An attempt was made to increase the reflectance purity of …
Railnet: A Simulation Model For Operational Planning Of Rail Freight, Guillaume Michal, Nam N. Huynh, Nagesh Shukla, Albert Munoz, Johan Barthelemy
Railnet: A Simulation Model For Operational Planning Of Rail Freight, Guillaume Michal, Nam N. Huynh, Nagesh Shukla, Albert Munoz, Johan Barthelemy
SMART Infrastructure Facility - Papers
In many rail networks, infrastructure constraints force the shared usage of lines between passenger and freight movements. Scheduling additional freight movements around existing passenger services and peak traffic based curfews presents significant challenges to commodity industries eager to increase export volumes. This paper addresses the problem of inserting additional freight movements in a constrained railway network. To this end, a railway operations planning model was developed to simulate and insert feasible rail movements in a non-periodic timetable. The simulation modelling platform developed in this paper is called RailNet, which simulates the existing railway network constraints and is capable of adding …
Ag-Mg Antisite Defect Induced High Thermoelectric Performance Of Α-Mgagsb, Zhenzhen Feng, Jihua Zhang, Yuli Yan, Guangbiao Zhang, Chao Wang, Chengxiao Peng, Fengzhu Ren, Yuan Xu Wang, Zhenxiang Cheng
Ag-Mg Antisite Defect Induced High Thermoelectric Performance Of Α-Mgagsb, Zhenzhen Feng, Jihua Zhang, Yuli Yan, Guangbiao Zhang, Chao Wang, Chengxiao Peng, Fengzhu Ren, Yuan Xu Wang, Zhenxiang Cheng
Australian Institute for Innovative Materials - Papers
Engineering atomic-scale native point defects has become an attractive strategy to improve the performance of thermoelectric materials. Here, we theoretically predict that Ag-Mg antisite defects as shallow acceptors can be more stable than other intrinsic defects under Mg-poor-Ag/Sb-rich conditions. Under more Mg-rich conditions, Ag vacancy dominates the intrinsic defects. The p-type conduction behavior of experimentally synthesized ¿-MgAgSb mainly comes from Ag vacancies and Ag antisites (Ag on Mg sites), which act as shallow acceptors. Ag-Mg antisite defects significantly increase the thermoelectric performance of ¿-MgAgSb by increasing the number of band valleys near the Fermi level. For Li-doped ¿-MgAgSb, under more …
Effect Of Various Carbonization Temperatures On Zif-67 Derived Nanoporous Carbons, Yanna Guo, Jing Tang, Rahul R. Salunkhe, Zeid Abdullah Alothman, Md. Shahriar Al Hossain, Victor Malgras, Yusuke Yamauchi
Effect Of Various Carbonization Temperatures On Zif-67 Derived Nanoporous Carbons, Yanna Guo, Jing Tang, Rahul R. Salunkhe, Zeid Abdullah Alothman, Md. Shahriar Al Hossain, Victor Malgras, Yusuke Yamauchi
Australian Institute for Innovative Materials - Papers
Here we have prepared ZIF-67 derived nanoporous carbons (NPCs) under different carbonization temperatures ranging from 800 to 1000 °C, and investigated the effect of the temperature on the porous structure. Raman analysis confirms that the graphitic degree of the obtained samples increases as the applied carbonization temperature is increased. With the gradual increase of the graphitic degree, the surface area is decreased.
Origin Of Thermally Stable Ferroelectricity In A Porous Barium Titanate Thin Film Synthesized Through Block Copolymer Templating, Norihiro Suzuki, Minoru Osada, Md Motasim Billah, Zeid Abdullah Alothman, Yoshio Bando, Yusuke Yamauchi, Md. Shahriar Al Hossain
Origin Of Thermally Stable Ferroelectricity In A Porous Barium Titanate Thin Film Synthesized Through Block Copolymer Templating, Norihiro Suzuki, Minoru Osada, Md Motasim Billah, Zeid Abdullah Alothman, Yoshio Bando, Yusuke Yamauchi, Md. Shahriar Al Hossain
Australian Institute for Innovative Materials - Papers
A porous barium titanate (BaTiO 3 ) thin film was chemically synthesized using a surfactant-assisted sol-gel method in which micelles of amphipathic diblock copolymers served as structure-directing agents. In the Raman spectrum of the porous B aTiO 3 thin film, a peak corresponding to the ferroelectric tetragonal phase was observed at around 710 cm -1 , and it remained stable at much higher temperature than the Curie temperature of bulk single-crystal BaTiO 3 (∼130 °C). Measurements revealed that the ferroelectricity of the BaTiO 3 thin film has high thermal stability. By analyzing high-resolution transmission electron microscope images of the BaTiO …
A Comparison Study Of Decomposition Mechanisms Of Single-Cation And Double-Cations (Li, Al) Ammine Borohydrides, Xiaowei Chen, Renquan Li, Guanglin Xia, Hongsheng He, Weidong Zou, Xuebin Yu
A Comparison Study Of Decomposition Mechanisms Of Single-Cation And Double-Cations (Li, Al) Ammine Borohydrides, Xiaowei Chen, Renquan Li, Guanglin Xia, Hongsheng He, Weidong Zou, Xuebin Yu
Australian Institute for Innovative Materials - Papers
The decomposition mechanisms of [Li(NH 3 )][BH 4 ], [Al(NH 3 ) 6 ][BH 4 ] 3 and [Al(NH 3 ) 6 ][Li 2 (BH 4 ) 5 ] were investigated using Density functional theory (DFT) calculation. The calculated results show that [Li(NH 3 )][BH 4 ] has low NH 3 vacancy formation energy and diffusion barrier, therefore ammonia would easily release at relatively low temperature. Both [Al(NH 3 ) 6 ][BH 4 ] 3 and [Al(NH 3 ) 6 ][Li 2 (BH 4 ) 5 ] show relatively high NH 3 vacancy formation energies and diffusion barriers, which avoid …
Enhanced And One-Way Absorptance Of Linio2 Thin Films In One-Dimensional Photonic Crystals, C H. Yang, C Zhang, Zhimin Ao, Guoxiu Wang
Enhanced And One-Way Absorptance Of Linio2 Thin Films In One-Dimensional Photonic Crystals, C H. Yang, C Zhang, Zhimin Ao, Guoxiu Wang
Australian Institute for Innovative Materials - Papers
The refractive index of LiNiO 2 thin films is complex and exhibits both dielectric and metallic properties. With LiNiO 2 thin films coated on or inserted in photonic crystals (PCs), it is possible to enhance the absorptance in the designed (AB) n LiNiO 2 (BA) m PC structures. One-way absorption in the photonic bandgap of (AB) PCs has been observed via changing the optical transmitting direction. The positions, width, and strength of the absorption peaks depend on the thickness of the LiNiO 2 films, the incident angles, and the transverse electric/transverse magnetic modes. The photonic band structure can be employed …
Photosensitization Of Tio2 Nanofibers By Ag2s With The Synergistic Effect Of Excess Surface Ti3+ States For Enhanced Photocatalytic Activity Under Simulated Sunlight, Samina Ghafoor, Sadia Ata, Nasir Mahmood, Salman Noshear Arshad
Photosensitization Of Tio2 Nanofibers By Ag2s With The Synergistic Effect Of Excess Surface Ti3+ States For Enhanced Photocatalytic Activity Under Simulated Sunlight, Samina Ghafoor, Sadia Ata, Nasir Mahmood, Salman Noshear Arshad
Australian Institute for Innovative Materials - Papers
No abstract provided.
Cyber Security Incidents On Critical Infrastructure And Industrial Networks, Robert Ighodaro Ogie
Cyber Security Incidents On Critical Infrastructure And Industrial Networks, Robert Ighodaro Ogie
SMART Infrastructure Facility - Papers
National critical infrastructure and industrial processes are heavily reliant on automation, monitoring and control technologies, including the widely used Supervisory Control and Data Acquisition (SCADA) systems. The growing interconnection of these systems with corporate networks exposes them to cyber attacks, with several security incidents reported over the last few decades. This study provides a classification scheme for categorising security incidents related to critical infrastructure and industrial control systems. The classification scheme is applied to analyse 242 security incidents on critical infrastructure and industrial control networks, which were reported between 1982 and 2014. The results show interesting patterns, with key points …
Data Mining In Educational Technology Classroom Research: Can It Make A Contribution?, Charoula Angeli, Sarah Katherine Howard, Jun Ma, Jie Yang, Paul A. Kirschner
Data Mining In Educational Technology Classroom Research: Can It Make A Contribution?, Charoula Angeli, Sarah Katherine Howard, Jun Ma, Jie Yang, Paul A. Kirschner
SMART Infrastructure Facility - Papers
The paper addresses and explains some of the key questions about the use of data mining in educational technology classroom research. Two examples of use of data mining techniques, namely, association rules mining and fuzzy representations are presented, from a study conducted in Europe and another in Australia. Both of these studies examine student learning, behaviors, and experiences within computer-supported classroom activities. In the first study, the technique of association rules mining was used to understand better how learners with different cognitive types interacted with a simulation to solve a problem. Association rules mining was found to be a useful …
An Adaptive Agent-Based Approach To Traffic Simulation, Johan Barthelemy, Timoteo Carletti
An Adaptive Agent-Based Approach To Traffic Simulation, Johan Barthelemy, Timoteo Carletti
SMART Infrastructure Facility - Papers
The aim of this work is to present the initial exploration of a behavioural Dynamic Traffic Assignment model, particularly suitable to be used and implemented in agent-based micro-simulations. The proposal relies on the assumption that travellers take routing policies rather than paths, leading us to introduce the possibility for each simulated agent to apply, in real time, a strategy allowing him to possibly re-route his path depending on the perceived local traffic conditions, jam and/or time spent. The re-routing process allows the agents to directly react to any change in the road network. For the sake of simplicity, the agents' …
A Dynamic Behavioural Traffic Assignment Model With Strategic Agents, Johan Barthelemy, Timoteo Carletti
A Dynamic Behavioural Traffic Assignment Model With Strategic Agents, Johan Barthelemy, Timoteo Carletti
SMART Infrastructure Facility - Papers
Foresee traffic conditions and demand is a major issue nowadays that is very often approached using simulation tools. The aim of this work is to propose an innovative strategy to tackle such problem, relying on the presentation and analysis of a behavioural dynamic traffic assignment. The proposal relies on the assumption that travellers take routing policies rather than paths, leading us to introduce the possibility for each simulated agent to apply, in real time, a strategy allowing him to possibly re-route his path depending on the perceived local traffic conditions, jam and/or time already spent in his journey. The re-routing …
Smart Infrastructure: An Emerging Frontier For Multidisciplinary Research, Robert Ighodaro Ogie, Pascal Perez, Virginia Dignum
Smart Infrastructure: An Emerging Frontier For Multidisciplinary Research, Robert Ighodaro Ogie, Pascal Perez, Virginia Dignum
SMART Infrastructure Facility - Papers
The irreversible marriage between digital technology and physical urban infrastructure has given rise to the concept of smart infrastructure. The potential benefits of smart infrastructure are significant; however, their realisation will depend on society's ability to address pressing issues, such as the need to develop a common language to describe terms and processes. This paper aims to lay out the foundations of such a common language. First, the authors review academic literature in order to outline key characteristics of so-called smart infrastructure systems. Importantly, the authors define and differentiate between smart and intelligent infrastructure systems. Then, the authors use an …
Upgrading Rail Connectivity Between Illawarra And Sydney, Joseph J. Branigan, Fariba Ramezani Khansari
Upgrading Rail Connectivity Between Illawarra And Sydney, Joseph J. Branigan, Fariba Ramezani Khansari
SMART Infrastructure Facility - Papers
The Illawarra Business Chamber (Illawarra First) commissioned the SMART Infrastructure Facility UOW (SMART) to investigate options to improve the speed and reliability of passenger and freight rail transport services between the Illawarra and Sydney.
Assessing Infrastructure System Of Systems Integrity, Ricardo Peculis, Farid Shirvani, Pascal Perez
Assessing Infrastructure System Of Systems Integrity, Ricardo Peculis, Farid Shirvani, Pascal Perez
SMART Infrastructure Facility - Papers
Infrastructure refers to the fundamental facilities and systems serving a country, city, or area, including the services and facilities necessary for its economy to function. Infrastructure systems typically consist of interrelated constituent systems forming what is known as system of systems (SoS). Infrastructure systems present numerous challenges throughout their lifecycles. This paper addresses one of these challenges that is presented during operation, when managers need to report 'how well' the system is performing and finding ways to address the consequences of unexpected events that often degrade the intended performance. This state of system 'wellbeing' will be referred as system integrity …
Lifelong Machine Learning With Adaptive Multi-Agent Systems, Nicolas R. Verstaevel, Jeremy Boes, Julien Nigon, Dorian D'Amico, Marie-Pierre Gleizes
Lifelong Machine Learning With Adaptive Multi-Agent Systems, Nicolas R. Verstaevel, Jeremy Boes, Julien Nigon, Dorian D'Amico, Marie-Pierre Gleizes
SMART Infrastructure Facility - Papers
Sensors and actuators are progressively invading our everyday life as well as industrial processes. They form complex and pervasive systems usually called "ambient systems" or "cyber-physical systems". These systems are supposed to efficiently perform various and dynamic tasks in an ever-changing environment. They need to be able to learn and to self-adapt throughout their life, because designers cannot specify a priori all the interactions and situations they will face. These are strong requirements that push the need for lifelong machine learning, where devices can learn models and behaviours during their whole lifetime and are able to transfer them to perform …
Investigating The Accuracy Of Georeferenced Social Media Data For Flood Mapping: The Petajakarta.Org Case Study, Robert Ighodaro Ogie, Hugh I. Forehead
Investigating The Accuracy Of Georeferenced Social Media Data For Flood Mapping: The Petajakarta.Org Case Study, Robert Ighodaro Ogie, Hugh I. Forehead
SMART Infrastructure Facility - Papers
Georeferenced social media data are gaining increased application in creating near real-time flood maps needed to improve situational awareness in data-starved regions. However, there is growing concern that the georeferenced locations of flood-related social media contents do not always correspond to the actual locations of the flooding event. But to what extent is this true? Without this knowledge, it is difficult to ascertain the accuracy of flood maps created using georeferenced social media contents. This study aims to improve understanding of the extent to which georeferenced locations of social media flood reports deviate from the actual locations of floods. The …
Infrastructure System Of Systems Integrity, Ricardo Peculis, Farid Shirvani
Infrastructure System Of Systems Integrity, Ricardo Peculis, Farid Shirvani
SMART Infrastructure Facility - Papers
Infrastructure systems typically consist of technical structures comprising of physical and operational components of interrelated constituent systems forming what is now known as system of systems (SOS). The complexity and uncertainty of unforeseen events that are inherent characteristic of infrastructure systems makes it impossible to predict undesirable emergent behaviours that could push the operation of such systems away from their intended purposes. Infrastructure systems present numerous challenges throughout their lifecycles. This paper addresses one of these challenges that is presented during operation, when managers need to report 'how well' the system is performing and find ways to address the consequences …
Coping With Social Complexity Of Infrastructure Projects, Ricardo Peculis
Coping With Social Complexity Of Infrastructure Projects, Ricardo Peculis
SMART Infrastructure Facility - Papers
Infrastructure projects are complex and technical complexity is dwarfed when compared with the social complexity caused by the interaction of individuals and organisations that participate and influence these projects. During conception and planning, uncertainty and conflicting motivations influence decisions that drive the solution and plans that are carried out during construction, operation and finally disposal of the system. If the need is not accurately conveyed and the solution is not properly defined, estimated and planned, infrastructure projects become subject of costs overrun and schedule delays of serious consequences, including the possibility that they may not satisfy the real need. Understanding …
Capacity Enhancement Of The Quenched Li-Ni-Mn-Co Oxide High-Voltage Li-Ion Battery Positive Electrode, Anirudha Jena, Cho-Hsueh Lee, Wei Kong Pang, Vanessa K. Peterson, Neeraj Sharma, Chun-Chieh Wang, Yen-Fang Song, Chun-Che Lin, Ho Chang, Ru-Shi Liu
Capacity Enhancement Of The Quenched Li-Ni-Mn-Co Oxide High-Voltage Li-Ion Battery Positive Electrode, Anirudha Jena, Cho-Hsueh Lee, Wei Kong Pang, Vanessa K. Peterson, Neeraj Sharma, Chun-Chieh Wang, Yen-Fang Song, Chun-Che Lin, Ho Chang, Ru-Shi Liu
Australian Institute for Innovative Materials - Papers
Li-rich metal oxides, regarded as a high-voltage composite cathode, is currently one of the hottest positive electrode material for lithium-ion batteries, due to its high-capacity and high-energy performance. The crystallography, phase composition and morphology can be altered by synthesis parameters, which can influence drastically the capacity and cycling performance. In this work, we demonstrate Li1.207Ni0.127Mn0.54Co0.127O2, obtained by a co-precipitation method, exhibits super-high specific capacity up to 298 mAh g−1 and excellent capacity retention of ∼100% up to 50 cycles. Using neutron powder diffraction and transmission X-ray microscopy, we have found that the cooling-treatments applied after sintering during synthesis are crucially …
Photoexcited Terahertz Conductivity Dynamics Of Graphene Tuned By Oxygen-Adsorption, Zeyu Zhang, Tie Lin, Xiao Xing, Xian Lin, Xiangjian Meng, Zhenxiang Cheng, Zuanming Jin, Guohong Ma
Photoexcited Terahertz Conductivity Dynamics Of Graphene Tuned By Oxygen-Adsorption, Zeyu Zhang, Tie Lin, Xiao Xing, Xian Lin, Xiangjian Meng, Zhenxiang Cheng, Zuanming Jin, Guohong Ma
Australian Institute for Innovative Materials - Papers
By using optical pump-terahertz (THz) probe spectroscopy, the photoexcited terahertz conductivity dynamics of chemical vapor deposition grown graphene is investigated in different atmospheric environments. It is shown that the Fermi energy of doped graphene is engineered by oxygen adsorption and desorption, which is probed by transient THz conductivity measurement. We show that the ultrafast energy relaxation processes depend on Fermi energy (changed by environmental gas) and the density of excited carriers (changed by photo-excitation fluence). The rise process of the negative conductivity dynamics becomes less efficient upon decreasing the Fermi energy and/or increasing the pump fluence. All findings show that …
Platinum-Cobalt Bimetallic Nanoparticles With Pt Skin For Electro-Oxidation Of Ethanol, Binwei Zhang, Tian Sheng, Yunxiao Wang, Xi-Ming Qu, Jun-Ming Zhang, Zong-Cheng Zhang, Hong-Gang Liao, Fu-Chun Zhu, Shi Xue Dou, Yan-Xia Jiang, Shi-Gang Sun
Platinum-Cobalt Bimetallic Nanoparticles With Pt Skin For Electro-Oxidation Of Ethanol, Binwei Zhang, Tian Sheng, Yunxiao Wang, Xi-Ming Qu, Jun-Ming Zhang, Zong-Cheng Zhang, Hong-Gang Liao, Fu-Chun Zhu, Shi Xue Dou, Yan-Xia Jiang, Shi-Gang Sun
Australian Institute for Innovative Materials - Papers
In order to maximize the Pt utilization in catalysts and improve catalytic processes, we report a convenient strategy for preparation of Pt3Co with Pt-skin structured bimetallic nanocatalysts directly supported on porous graphitic carbon. Notably, the thickness of the Pt-skin is only 1-2 atomic layers, about 0.5 nm. Surprisingly, the bimetallic nanocatalysts composed of Pt3Co with Pt-skin are first used as ethanol electro-catalysts, with the mass activity of 0.79 mA ¿gPt-1, which is a 250% enhancement compared with commercial Pt/C (0.32 mA ¿gPt-1). On the basis of the results of electrochemical in situ Fourier transform infrared spectroscopy (FTIRS) and density functional …
Silica Nanoparticles Functionalized With Zwitterionic Sulfobetaine Siloxane For Application As A Versatile Antifouling Coating System, Brianna Knowles, Pawel W. Wagner, Shane A. Maclaughlin, Michael J. Higgins, Paul J. Molino
Silica Nanoparticles Functionalized With Zwitterionic Sulfobetaine Siloxane For Application As A Versatile Antifouling Coating System, Brianna Knowles, Pawel W. Wagner, Shane A. Maclaughlin, Michael J. Higgins, Paul J. Molino
Australian Institute for Innovative Materials - Papers
The growing need to develop surfaces able to effectively resist biological fouling has resulted in the widespread investigation of nanomaterials with potential antifouling properties. However, the preparation of effective antifouling coatings is limited by the availability of reactive surface functional groups and our ability to carefully control and organize chemistries at a materials' interface. Here, we present two methods of preparing hydrophilic low-fouling surface coatings through reaction of silica-nanoparticle suspensions and predeposited silicananoparticle films with zwitterionic sulfobetaine (SB). Silica-nanoparticle suspensions were functionalized with SB across three pH conditions and deposited as thin films via a simple spin-coating process to generate …
Mo2c/Cnt: An Efficient Catalyst For Rechargeable Li–Co2 Batteries, Yuyang Hou, Jiazhao Wang, Lili Liu, Yuqing Liu, Shulei Chou, Dongqi Shi, Hua-Kun Liu, Yu-Ping Wu, Weimin Zhang, Jun Chen
Mo2c/Cnt: An Efficient Catalyst For Rechargeable Li–Co2 Batteries, Yuyang Hou, Jiazhao Wang, Lili Liu, Yuqing Liu, Shulei Chou, Dongqi Shi, Hua-Kun Liu, Yu-Ping Wu, Weimin Zhang, Jun Chen
Australian Institute for Innovative Materials - Papers
The rechargeable Li-CO2 battery is a novel and promising energy storage system with the capability of CO2 capture due to the reversible reaction between lithium ions and carbon dioxide. Carbon materials as the cathode, however, limit both the cycling performance and the energy efficiency of the rechargeable Li-CO2 battery, due to the insulating Li2CO3 formed in the discharge process, which is difficult to decompose in the charge process. Here, a Mo2C/carbon nanotube composite material is developed as the cathode for the rechargeable Li-CO2 battery and can achieve high energy efficiency (77%) and improved cycling performance (40 cycles). A related mechanism …
Atomic-Scale Coox Species In Metal-Organic Frameworks For Oxygen Evolution Reaction, Shuo Dou, Chung-Li Dong, Zhe Hu, Jeng-Lung Chen, Yu-Cheng Huang, Li Tao, Dafeng Yan, Dawei Chen, Shaohua Shen, Shulei Chou, Shuangyin Wang
Atomic-Scale Coox Species In Metal-Organic Frameworks For Oxygen Evolution Reaction, Shuo Dou, Chung-Li Dong, Zhe Hu, Jeng-Lung Chen, Yu-Cheng Huang, Li Tao, Dafeng Yan, Dawei Chen, Shaohua Shen, Shulei Chou, Shuangyin Wang
Australian Institute for Innovative Materials - Papers
The activity of electrocatalysts strongly depends on the number of active sites, which can be increased by downsizing electrocatalysts. Single-atom catalysts have attracted special attention due to atomic-scale active sites. However, it is a huge challenge to obtain atomic-scale CoO x catalysts. The Co-based metal-organic frameworks (MOFs) own atomically dispersed Co ions, which motivates to design a possible pathway to partially on-site transform these Co ions to active atomic-scale CoO x species, while reserving the highly porous features of MOFs. In this work, for the first time, the targeted on-site formation of atomic-scale CoO x species is realized in ZIF-67 …
From Flatscreen Tvs To Your Smartphone: The Element Boron Deserves More Attention, Zhenguo Huang
From Flatscreen Tvs To Your Smartphone: The Element Boron Deserves More Attention, Zhenguo Huang
Australian Institute for Innovative Materials - Papers
Each time you watch sport on a flatscreen television, or send a message by touching your smartphone screen, give thanks to an unsung hero of the periodic table: boron.
Human Skin Interactive Self-Powered Wearable Piezoelectric Bio-E-Skin By Electrospun Poly-L-Lactic Acid Nanofibers For Non-Invasive Physiological Signal Monitoring, Ayesha Sultana, Sujoy Ghosh, Vitor Sencadas, Tian Zheng, Michael J. Higgins, Tapas Middya, Dipankar Mandal
Human Skin Interactive Self-Powered Wearable Piezoelectric Bio-E-Skin By Electrospun Poly-L-Lactic Acid Nanofibers For Non-Invasive Physiological Signal Monitoring, Ayesha Sultana, Sujoy Ghosh, Vitor Sencadas, Tian Zheng, Michael J. Higgins, Tapas Middya, Dipankar Mandal
Australian Institute for Innovative Materials - Papers
Flexible and wearable piezoelectric bio e-skin (PBio-e-skin) based on electrospun poly(l-lactic acid) PLLA nanofiber membrane is demonstrated for non-invasive human physiological signal monitoring and detecting dynamic tactile stimuli. The molecular orientations of the CO dipoles by electrospinning technique result in a longitudinal piezoelectric charge co-efficient (d 33 ) value of ∼(3 ± 1) pm V -1 realized by piezoresponse force microscopy, allowing the PBio-e-skin for pressure sensing applications. The robust mechanical strength (Young's modulus ∼50 MPa) of nanofiber membrane ensures PBio-e-skin's superior operational stability over 375000 cycles. Owing to the superior mechanosensitivity of ∼22 V N -1 , PBio-e-skin has …