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Full-Text Articles in Physical Sciences and Mathematics

In Operando Mechanism Analysis On Nanocrystalline Silicon Anode Material For Reversible And Ultrafast Sodium Storage, Lei Zhang, Xianluo Hu, Chaoji Chen, Haipeng Guo, Xiaoxiao Liu, Gengzhao Xu, Haijian Zhong, Shuang Cheng, Peng Wu, Jiashen Meng, Yunhui Huang, Shi Xue Dou, Hua-Kun Liu Mar 2018

In Operando Mechanism Analysis On Nanocrystalline Silicon Anode Material For Reversible And Ultrafast Sodium Storage, Lei Zhang, Xianluo Hu, Chaoji Chen, Haipeng Guo, Xiaoxiao Liu, Gengzhao Xu, Haijian Zhong, Shuang Cheng, Peng Wu, Jiashen Meng, Yunhui Huang, Shi Xue Dou, Hua-Kun Liu

Australian Institute for Innovative Materials - Papers

Presently, lithium-ion batteries (LIBs) are the most promising commercialized electrochemical energy storage systems. Unfortunately, the limited resource of Li results in increasing cost for its scalable application and a general consciousness of the need to find new type of energy storage technologies. Very recently, substantial effort has been invested to sodium-ion batteries (SIBs) due to their effectively unlimited nature of sodium resources. Furthermore, the potential of Li/Li+ is 0.3 V lower than that of Na/Na+, which makes it more effective to limit the electrolyte degradation on the outer surface of the electrode.[1] Nevertheless, one major obstacle ...


The Charge Transport Mechanisms In Conducting Polymer Polypyrrole Films And Fibers, Reza Ghanbari, Shaban Reza Ghorbani, Hadi Arabi, Javad Foroughi Jan 2018

The Charge Transport Mechanisms In Conducting Polymer Polypyrrole Films And Fibers, Reza Ghanbari, Shaban Reza Ghorbani, Hadi Arabi, Javad Foroughi

Australian Institute for Innovative Materials - Papers

Smart materials based on inherently conducting polymers are of practical interest and extend the advantages of electromaterials from the nanoscale to macroscale applications. However understanding mechanisms of the their electrical properties are still remained challanging. Herein, we report the transport properties of chemically and electrochemically preapred conducting polymer polypyrrole films and fibers. Conduction mechanisms of the as-prepared polypyrrole (PPy) were investigated using their electrical properties as a function of temperature (7-300 K). The results of the PPy resistivity were evaluated using a linear combination of Mott's and Efros-Shklovskii's Variable- Range Hopping (Mott-VRH and ES-VRH) models. It was found ...


Enhancement Of Thermoelectric Figure Of Merit By The Insertion Of Multi-Walled Carbon Nanotubes In Α-Mgagsb, Jingdan Lei, De Zhang, Weibao Guan, Zheng Ma, Zhenxiang Cheng, Chao Wang, Yuanxu Wang Jan 2018

Enhancement Of Thermoelectric Figure Of Merit By The Insertion Of Multi-Walled Carbon Nanotubes In Α-Mgagsb, Jingdan Lei, De Zhang, Weibao Guan, Zheng Ma, Zhenxiang Cheng, Chao Wang, Yuanxu Wang

Australian Institute for Innovative Materials - Papers

Hybrid materials provide an efficient alternative route on improving the thermoelectric performance compared with doping elements. Especially, the insertion of carbon nanotubes plays an effective role in modulating the electrical transport properties and phonon scattering simultaneously. We fabricated a multi-walled carbon nanotube (MWCNTs) doped α-MgAgSb-based hybrid material and researched its thermoelectric properties in detail. The introduced MWCNTs enhanced carrier transport due to the metallic character of MWCNTs and phonon dispersion by the additional interfaces of insertions. The results showed that the electrical conductivity in α-MgAgSb/CNTs was remarkably enhanced especially at MgAg0.97Sb0.99/0.15 wt. % CNTs boosting to ...


Energy Of Dendritic Avalanches In Thin-Film Superconductors, T Qureishy, J I. Vestgarden, A J. Qviller, A S. Fjellvag, J M. Meckbach, A Torgovkin, Tom H. Johansen, K Ilin, M Siegel, I J. Maasilta, Pavlo Mikheenko Jan 2018

Energy Of Dendritic Avalanches In Thin-Film Superconductors, T Qureishy, J I. Vestgarden, A J. Qviller, A S. Fjellvag, J M. Meckbach, A Torgovkin, Tom H. Johansen, K Ilin, M Siegel, I J. Maasilta, Pavlo Mikheenko

Australian Institute for Innovative Materials - Papers

A method for calculating stored magnetic energy in a thin superconducting film based on quantitative magneto-optical imaging is developed. Energy and magnetic moment are determined with these calculations for full hysteresis loops in a thin film of the superconductor NbN. Huge losses in energy are observed when dendritic avalanches occur. Magnetic energy, magnetic moment, sheet current and magnetic flux distributions, all extracted from the same calibrated magneto-optical images, are analyzed and discussed. Dissipated energy and the loss in moment when dendritic avalanches occur are related to each other. Calculating these losses for specific spatially-resolved flux avalanches is a great advantage ...


Progress And Future Perspectives On Li(Na)-Co2 Batteries, Fengshi Cai, Zhe Hu, Shulei Chou Jan 2018

Progress And Future Perspectives On Li(Na)-Co2 Batteries, Fengshi Cai, Zhe Hu, Shulei Chou

Australian Institute for Innovative Materials - Papers

Li(Na)-CO2 batteries are attracting significant research attention due to contemporary energy and environmental issues. Li(Na)-CO2 batteries make possible the utilization of CO2 and open up a new avenue for energy conver-sion and storage. Research on this system is currently in its infancy, and its development is still faced with many challenges in terms of high charge potential, weak rate capability, and poor cyclability. Moreover, the reaction mechanism in the battery is still unclear and hard to determine, due to the generation of carbon along with metal carbonates on the cathode. In this review, the authors present ...


Review Of Electrolytes In Nonaqueous Lithium-Oxygen Batteries, Haipeng Guo, Wenbin Luo, Jun Chen, Shulei Chou, Hua-Kun Liu, Jiazhao Wang Jan 2018

Review Of Electrolytes In Nonaqueous Lithium-Oxygen Batteries, Haipeng Guo, Wenbin Luo, Jun Chen, Shulei Chou, Hua-Kun Liu, Jiazhao Wang

Australian Institute for Innovative Materials - Papers

Based on an inexhaustible and ubiquitous source of oxygen, the lithium-oxygen batteries are currently the subject of much scientific investigation because of their potential for extremely high energy density. The electrocatalytic materials for them have been extensively researched during the past decade. Even though they are a key component in the lithium-oxygen batteries, however, the study of electrolytes is still in its primary stage. Electrolytes have an important influence on the electrochemical performance of lithium-oxygen batteries, especially on their cycling stability and rate capacity. Therefore, it is important to select an ideal electrolyte with excellent stability against attack by reaction ...


Porous Nanozymes: The Peroxidase-Mimetic Activity Of Mesoporous Iron Oxide For The Colorimetric And Electrochemical Detection Of Global Dna Methylation, Ripon Bhattacharjee, Shunsuke Tanaka, Sofia Moriam, Mostafa Kamal Masud, Jianjian Lin, Saad M. Alshehri, Tansir Ahamad, Rahul R. Salunkhe, Nam-Trung Nguyen, Yusuke Yamauchi, Md. Shahriar Al Hossain, Muhammad J. A Shiddiky Jan 2018

Porous Nanozymes: The Peroxidase-Mimetic Activity Of Mesoporous Iron Oxide For The Colorimetric And Electrochemical Detection Of Global Dna Methylation, Ripon Bhattacharjee, Shunsuke Tanaka, Sofia Moriam, Mostafa Kamal Masud, Jianjian Lin, Saad M. Alshehri, Tansir Ahamad, Rahul R. Salunkhe, Nam-Trung Nguyen, Yusuke Yamauchi, Md. Shahriar Al Hossain, Muhammad J. A Shiddiky

Australian Institute for Innovative Materials - Papers

No abstract provided.


Synthesis And Characterization Of Dendritic Pt Nanoparticles By Using Cationic Surfactant, Kenya Kani, Mohamed B. Zakaria, Jianjian Lin, Abdulmohsen Alshehri, Jeonghun Kim, Yoshio Bando, Jungmok You, Md. Shahriar Al Hossain, Jiang Bo, Yusuke Yamauchi Jan 2018

Synthesis And Characterization Of Dendritic Pt Nanoparticles By Using Cationic Surfactant, Kenya Kani, Mohamed B. Zakaria, Jianjian Lin, Abdulmohsen Alshehri, Jeonghun Kim, Yoshio Bando, Jungmok You, Md. Shahriar Al Hossain, Jiang Bo, Yusuke Yamauchi

Australian Institute for Innovative Materials - Papers

Platinum (Pt) is known as one of the most promising electrocatalysts, and nanostructured Pt materials have enhanced its activity due to their abundant catalytically active sites derived from their high surface area. Herein, we synthesize fascinating dendritic Pt nanoparticles (DPNs) by a softtemplating method using hexadecyltrimethylammonium chloride (CTAC) as a pore-forming agent. The dissolved negatively charged Pt precursor (PtCl4 2¹) effectively interact with the surfactant. The particle size of the obtained DPNs is around 20 nm, and the pore walls are composed of Pt nanocrystals. The obtained DPNs show good electrocatalytic activity towards methanol oxidation reaction (MOR) compared to commercial ...


3d Printing Vegemite And Marmite: Redefining "Breadboards", Charles Hamilton, Gursel Alici, Marc In Het Panhuis Jan 2018

3d Printing Vegemite And Marmite: Redefining "Breadboards", Charles Hamilton, Gursel Alici, Marc In Het Panhuis

Australian Institute for Innovative Materials - Papers

The ability to use Food Layered Manufacturing (FLM) to fabricate attractive food presentations and incorporate additives that can alter texture, nutrition, color, and flavor have made it widely investigated for combatting various issues in the food industry. For a food item to be FLM compatible, it must possess suitable rheological properties to allow for its extrusion and to keep its 3D printed structure. Here, we present a rheological analysis of two commercially available breakfast spreads, Vegemite and Marmite, and show their compatibility with FLM in producing 3D structures onto bread substrates. Furthermore, we demonstrated that these materials can be used ...


The Effect Of Amorphous Tio2 In P25 On Dye-Sensitized Solar Cell Performance, Kadhim Al-Attafi, Andrew Nattestad, Qijie Wu, Yusuke Ide, Yusuke Yamauchi, Shi Xue Dou, Jung Ho Kim Jan 2018

The Effect Of Amorphous Tio2 In P25 On Dye-Sensitized Solar Cell Performance, Kadhim Al-Attafi, Andrew Nattestad, Qijie Wu, Yusuke Ide, Yusuke Yamauchi, Shi Xue Dou, Jung Ho Kim

Australian Institute for Innovative Materials - Papers

P25 is one of the most widely used forms of titanium(IV) oxide (TiO2), routinely utilised in dye-sensitised solar cells (DSCs), where it is often employed as a control, in spite of its poorly defined nature and the typically low device efficiency (or possibly because of this). Work by Park in 2000 and later by Lin et al. suggests that the rutile component might not be to blame for this, as has often been claimed. Recently it has been observed that P25 has quite a sizable amorphous content. A method to selectively remove this non-crystalline material has been developed, allowing ...


Thickness Dependence Of Dendritic Flux Avalanches In Yba2cu3o7-Xfilms, E Baruch-El, M Baziljevich, Tom H. Johansen, A Shaulov, Y Yeshurun Jan 2018

Thickness Dependence Of Dendritic Flux Avalanches In Yba2cu3o7-Xfilms, E Baruch-El, M Baziljevich, Tom H. Johansen, A Shaulov, Y Yeshurun

Australian Institute for Innovative Materials - Papers

By implementing a unique magneto-optical system with ultrafast magnetic-field ramping-rate capability (up to 3 kT/s), we have been able to routinely generate and image dendritic flux instabilities in YBa 2 Cu 3 O 7-x films. In the present work we study the effect of the film thickness on the dendritic instability. Dendritic avalanches in 50-600 nm thick films were magneto-optically imaged at 7 K, after ramping the magnetic field from zero to 60 mT at different rates. The data reveal a remarkable change in flux morphologies between the thin and the thicker films. While the former (50-250 nm) display ...


Frequency And Wavenumber Selective Excitation Of Spin Waves Through Coherent Energy Transfer From Elastic Waves, Yusuke Hashimoto, Davide Bossini, Tom H. Johansen, Eiji Saitoh, Andrei Kirilyuk, Theo Rasing Jan 2018

Frequency And Wavenumber Selective Excitation Of Spin Waves Through Coherent Energy Transfer From Elastic Waves, Yusuke Hashimoto, Davide Bossini, Tom H. Johansen, Eiji Saitoh, Andrei Kirilyuk, Theo Rasing

Australian Institute for Innovative Materials - Papers

Using spin-wave tomography (SWaT), we have investigated the excitation and the propagation dynamics of optically excited magnetoelastic waves, i.e., hybridized modes of spin waves and elastic waves, in a garnet film. By using time-resolved SWaT, we reveal the excitation dynamics of magnetoelastic waves through coherent-energy transfer between optically excited pure-elastic waves and spin waves via magnetoelastic coupling. This process realizes frequency and wavenumber selective excitation of spin waves at the crossing of the dispersion relations of spin waves and elastic waves. Finally, we demonstrate that the excitation mechanism of the optically excited pure-elastic waves, which are the source of ...


Si Nanocrystal-Embedded Sioxnanofoils: Two-Dimensional Nanotechnology-Enabled High Performance Li Storage Materials, Hyundong Yoo, Eunjun Park, Juhye Bae, Jaewoo Lee, Dong Jae Chung, Yong Jo, Min-Sik Park, Jung Ho Kim, Shi Xue Dou, Young-Jun Kim, Hansu Kim Jan 2018

Si Nanocrystal-Embedded Sioxnanofoils: Two-Dimensional Nanotechnology-Enabled High Performance Li Storage Materials, Hyundong Yoo, Eunjun Park, Juhye Bae, Jaewoo Lee, Dong Jae Chung, Yong Jo, Min-Sik Park, Jung Ho Kim, Shi Xue Dou, Young-Jun Kim, Hansu Kim

Australian Institute for Innovative Materials - Papers

Silicon (Si) based materials are highly desirable to replace currently used graphite anode for lithium ion batteries. Nevertheless, its usage is still a big challenge due to poor battery performance and scale-up issue. In addition, two-dimensional (2D) architectures, which remain unresolved so far, would give them more interesting and unexpected properties. Herein, we report a facile, cost-effective, and scalable approach to synthesize Si nanocrystals embedded 2D SiO x nanofoils for next-generation lithium ion batteries through a solution-evaporation-induced interfacial sol-gel reaction of hydrogen silsesquioxane (HSiO 1.5 , HSQ). The unique nature of the thus-prepared centimeter scale 2D nanofoil with a large ...


Three-Dimensional Printing And Cell Therapy For Wound Repair, Sylvia Van Kogelenberg, Zhilian Yue, Jeremy Dinoro, Christopher Baker, Gordon G. Wallace Jan 2018

Three-Dimensional Printing And Cell Therapy For Wound Repair, Sylvia Van Kogelenberg, Zhilian Yue, Jeremy Dinoro, Christopher Baker, Gordon G. Wallace

Australian Institute for Innovative Materials - Papers

Significance: Skin tissue damage is a major challenge and a burden on healthcare systems, from burns and other trauma to diabetes and vascular disease. Although the biological complexities are relatively well understood, appropriate repair mechanisms are scarce. Three-dimensional bioprinting is a layer-based approach to regenerative medicine, whereby cells and cell-based materials can be dispensed in fine spatial arrangements to mimic native tissue. Recent Advances: Various bioprinting techniques have been employed in wound repair-based skin tissue engineering, from laser-induced forward transfer to extrusion-based methods, and with the investigation of the benefits and shortcomings of each, with emphasis on biological compatibility and ...


Feasibility And Characterization Of Common And Exotic Filaments For Use In 3d Printed Terahertz Devices, Andrew Squires, R A. Lewis Jan 2018

Feasibility And Characterization Of Common And Exotic Filaments For Use In 3d Printed Terahertz Devices, Andrew Squires, R A. Lewis

Australian Institute for Innovative Materials - Papers

Recent years have seen an influx of applications utilizing 3D printed devices in the terahertz regime. The simplest, and perhaps most versatile, modality allowing this is Fused Deposition Modelling. In this work, a holistic analysis of the terahertz optical, mechanical and printing properties of 17 common and exotic 3D printer filaments used in Fused Deposition Modelling is performed. High impact polystyrene is found to be the best filament, with a useable frequency range of 0.1-1.3 THz, while remaining easily printed. Nylon, polylactic acid and polyvinyl alcohol give the least desirable terahertz response, satisfactory only below 0.5 THz ...


Progress And Future Prospects Of High-Voltage And High-Safety Electrolytes In Advanced Lithium Batteries: From Liquid To Solid Electrolytes, Shimou Chen, Kaihua Wen, Juntian Fan, Yoshio Bando, Dmitri Golberg Jan 2018

Progress And Future Prospects Of High-Voltage And High-Safety Electrolytes In Advanced Lithium Batteries: From Liquid To Solid Electrolytes, Shimou Chen, Kaihua Wen, Juntian Fan, Yoshio Bando, Dmitri Golberg

Australian Institute for Innovative Materials - Papers

Developing the next-generation high-energy density and safe batteries is of prime importance to meet the emerging demands in electronics, automobile industries and various energy storage systems. High-voltage lithium-ion batteries (LIBs) and solid-state batteries (SSBs) are two main directions attracting increasing interest in recent years, due to their potential applications in the near future. In both kinds of batteries, the electrolytes play a pivotal role but also create several bottleneck problems. In this review, recent progress in designing electrolytes for high-voltage LIBs and SSBs is summarized. First, the solvents, additives, ionic liquids and superconcentrated salts strategies for constructing high-voltage liquid electrolytes ...


Sub-50 Nm Iron-Nitrogen-Doped Hollow Carbon Sphere-Encapsulated Iron Carbide Nanoparticles As Efficient Oxygen Reduction Catalysts, Haibo Tan, Yunqi Li, Jeonghun Kim, Toshiaki Takei, Zhongli Wang, Xingtao Xu, Jie Wang, Yoshio Bando, Yong-Mook Kang, Jing Tang, Yusuke Yamauchi Jan 2018

Sub-50 Nm Iron-Nitrogen-Doped Hollow Carbon Sphere-Encapsulated Iron Carbide Nanoparticles As Efficient Oxygen Reduction Catalysts, Haibo Tan, Yunqi Li, Jeonghun Kim, Toshiaki Takei, Zhongli Wang, Xingtao Xu, Jie Wang, Yoshio Bando, Yong-Mook Kang, Jing Tang, Yusuke Yamauchi

Australian Institute for Innovative Materials - Papers

Sub-50 nm iron-nitrogen-doped hollow carbon sphere-encapsulated iron carbide nanoparticles (Fe 3 C-Fe,N/C) are synthesized by using a triblock copolymer of poly(styrene-b-2-vinylpyridine-b-ethylene oxide) as a soft template. Their typical features, including a large surface area (879.5 m 2 g -1 ), small hollow size (≈16 nm), and nitrogen-doped mesoporous carbon shell, and encapsulated Fe 3 C nanoparticles generate a highly active oxygen reduction reaction (ORR) performance. Fe 3 C-Fe,N/C hollow spheres exhibit an ORR performance comparable to that of commercially available 20 wt% Pt/C in alkaline electrolyte, with a similar half-wave potential, an electron transfer ...


Discovery Of A Voltage-Stimulated Heartbeat Effect In Droplets Of Liquid Gallium, Zhenwei Yu, Yuchen Chen, Fei Yun, David L. Cortie, Lei Jiang, Xiaolin Wang Jan 2018

Discovery Of A Voltage-Stimulated Heartbeat Effect In Droplets Of Liquid Gallium, Zhenwei Yu, Yuchen Chen, Fei Yun, David L. Cortie, Lei Jiang, Xiaolin Wang

Australian Institute for Innovative Materials - Papers

Chemomechanical effects are known to initiate fluid oscillations in certain liquid metals; however, they typically produce an irregular motion that is difficult to deactivate or control. Here we show that stimulating liquid gallium with electrochemistry can cause a metal drop to exhibit a heart beating effect by shape shifting at a telltale frequency. Unlike the effects reported in the past for mercury, the symmetry-breaking forces generated by using gallium propel the drop several millimeters with velocities of the order of 1 cm per second. We demonstrate pulsating dynamics between 0 and 610 beats per minute for 50-150 μL droplets in ...


Electrical Stimulation With A Conductive Polymer Promotes Neurite Outgrowth And Synaptogenesis In Primary Cortical Neurons In 3d, Qingsheng Zhang, Stephen T. Beirne, Kewei Shu, Dorna Esrafilzadeh, Xu-Feng Huang, Gordon G. Wallace Jan 2018

Electrical Stimulation With A Conductive Polymer Promotes Neurite Outgrowth And Synaptogenesis In Primary Cortical Neurons In 3d, Qingsheng Zhang, Stephen T. Beirne, Kewei Shu, Dorna Esrafilzadeh, Xu-Feng Huang, Gordon G. Wallace

Australian Institute for Innovative Materials - Papers

Deficits in neurite outgrowth and synaptogenesis have been recognized as an underlying developmental aetiology of psychosis. Electrical stimulation promotes neuronal induction including neurite outgrowth and branching. However, the effect of electrical stimulation using 3D electrodes on neurite outgrowth and synaptogenesis has not been explored. This study examined the effect of 3D electrical stimulation on 3D primary cortical neuronal cultures. 3D electrical stimulation improved neurite outgrowth in 3D neuronal cultures from both wild-Type and NRG1-knockout (NRG1-KO) mice. The expression of synaptophysin and PSD95 were elevated under 3D electrical stimulation. Interestingly, 3D electrical stimulation also improved neural cell aggregation as well as ...


Defect Electrocatalytic Mechanism: Concept, Topological Structure And Perspective, Yi Jia, Jun Chen, Xiangdong Yao Jan 2018

Defect Electrocatalytic Mechanism: Concept, Topological Structure And Perspective, Yi Jia, Jun Chen, Xiangdong Yao

Australian Institute for Innovative Materials - Papers

Carbon-based materials have been attracting intense interest for electrocatalysis due to their various merits, such as abundance, low cost, high conductivity and tunable molecular structures. However, to date, the electrochemical activities of these electrocatalysts are mainly attributed to different active dopants (e.g. N, B, P or S), leading to a common concept that heteroatom doping is essential for carbon-based electrocatalysts. Recently, we presented a new concept where the specific topological defects could activate the oxygen reduction reaction (ORR) and developed a facile method to create such unique defects. Subsequent research has extended this new mechanism to other reactions, such ...


Dirac Signature In Germanene On Semiconducting Substrate, Jincheng Zhuang, Chen Liu, Zhiyong Zhou, Gilberto Casillas, Haifeng Feng, Xun Xu, Jiaou Wang, Weichang Hao, Xiaolin Wang, Shi Xue Dou, Zhenpeng Hu, Yi Du Jan 2018

Dirac Signature In Germanene On Semiconducting Substrate, Jincheng Zhuang, Chen Liu, Zhiyong Zhou, Gilberto Casillas, Haifeng Feng, Xun Xu, Jiaou Wang, Weichang Hao, Xiaolin Wang, Shi Xue Dou, Zhenpeng Hu, Yi Du

Australian Institute for Innovative Materials - Papers

2D Dirac materials supported by nonmetallic substrates are of particular interest due to their significance for the realization of the quantum spin Hall effect and their application in field-effect transistors. Here, monolayer germanene is successfully fabricated on semiconducting germanium film with the support of a Ag(111) substrate. Its linear-like energy-momentum dispersion and large Fermi velocity are derived from the pronounced quasiparticle interference patterns in a √3 x √3 superstructure. In addition to Dirac fermion characteristics, the theoretical simulations reveal that the energy gap opens at the Brillouin zone center of the √3 x √3 restructured germanene, which is evoked ...


Nanocrystalline Cellulose For Anisotropic Magnetoelectric Composites, Yan Zong, Zhilian Yue, Michael J. Higgins Jan 2018

Nanocrystalline Cellulose For Anisotropic Magnetoelectric Composites, Yan Zong, Zhilian Yue, Michael J. Higgins

Australian Institute for Innovative Materials - Papers

The emergence of piezoelectric polymers in magnetoelectric (ME) composites enables flexible and low-cost device fabrication though notably gives rise to the highest ME output voltages to date. Accordingly, the highest piezoresponsive polymers, poly(vinylidene fluoride) (PVDF) and its copolymers, are exclusively studied despite an inventory of unexplored piezoelectric polymers such as naturally occurring cellulose, that is only recently demonstrated in ME composites. Herein, the development of nanocrystalline cellulose (CNC)-based ME composites is reported on. Two types of CNC, nanospheres and nanowhiskers, are synthesized and incorporated in laminate composite, which exhibit a giant α ME ( > 1 V cm -1 Oe ...


Recent Advances In Designing High-Capacity Anode Nanomaterials For Li-Ion Batteries And Their Atomic-Scale Storage Mechanism Studies, Qiuhong Cui, Yeteng Zhong, Lu Pan, Hongyun Zhang, Yijun Yang, Dequan Liu, Feng Teng, Yoshio Bando, Jiannian Yao, Xi Wang Jan 2018

Recent Advances In Designing High-Capacity Anode Nanomaterials For Li-Ion Batteries And Their Atomic-Scale Storage Mechanism Studies, Qiuhong Cui, Yeteng Zhong, Lu Pan, Hongyun Zhang, Yijun Yang, Dequan Liu, Feng Teng, Yoshio Bando, Jiannian Yao, Xi Wang

Australian Institute for Innovative Materials - Papers

Lithium-ion batteries (LIBs) have been widely applied in portable electronics (laptops, mobile phones, etc.) as one of the most popular energy storage devices. Currently, much effort has been devoted to exploring alternative high-capacity anode materials and thus potentially constructing high-performance LIBs with higher energy/power density. Here, high-capacity anode nanomaterials based on the diverse types of mechanisms, intercalation/deintercalation mechanism, alloying/dealloying reactions, conversion reaction, and Li metal reaction, are reviewed. Moreover, recent studies in atomic-scale storage mechanism by utilizing advanced microscopic techniques, such as in situ high-resolution transmission electron microscopy and other techniques (e.g., spherical aberration-corrected scanning transmission ...


Broadband Photocarrier Dynamics And Nonlinear Absorption Of Pld-Grown Wte2semimetal Films, Wenbin Gao, Lei Huang, Jinlong Xu, Yequan Chen, Chunhui Zhu, Zhonghui Nie, Yao Li, Xuefeng Wang, Zhenda Xie, Shining Zhu, Jun Xu, Xiangang Wan, C Zhang, Yongbing Xu, Yi Shi, Fengqiu Wang Jan 2018

Broadband Photocarrier Dynamics And Nonlinear Absorption Of Pld-Grown Wte2semimetal Films, Wenbin Gao, Lei Huang, Jinlong Xu, Yequan Chen, Chunhui Zhu, Zhonghui Nie, Yao Li, Xuefeng Wang, Zhenda Xie, Shining Zhu, Jun Xu, Xiangang Wan, C Zhang, Yongbing Xu, Yi Shi, Fengqiu Wang

Australian Institute for Innovative Materials - Papers

WTe 2 is a unique material in the family of transition metal dichalcogenides and it has been proposed as a candidate for type-II Weyl semimetals. However, thus far, studies on the optical properties of this emerging material have been significantly hindered by the lack of large-area, high-quality WTe 2 materials. Here, we grow a centimeter-scale, highly crystalline WTe 2 ultrathin film (∼35 nm) by a pulsed laser deposition technique. Broadband pump-probe spectroscopy (1.2-2.5 μm) reveals a peculiar ultrafast optical response where an initial photo-bleaching signal (lasting ∼3 ps) is followed by a long-lived photoinduced absorption signature. Nonlinear absorption ...


Solid-State Poly(Ionic Liquid) Gels For Simultaneous Co2 Adsorption And Electrochemical Reduction, Tania Benedetti Goncales, Sina Naficy, Ashley Walker, David L. Officer, Gordon G. Wallace, Fariba Dehghani Jan 2018

Solid-State Poly(Ionic Liquid) Gels For Simultaneous Co2 Adsorption And Electrochemical Reduction, Tania Benedetti Goncales, Sina Naficy, Ashley Walker, David L. Officer, Gordon G. Wallace, Fariba Dehghani

Australian Institute for Innovative Materials - Papers

Managing carbon dioxide (CO2) released from large-scale industrial processes is of great importance, yet there remain significant technical challenges. Herein, the fabrication of 1- mm-thick solid-state electrochemical devices based on poly- (ionic liquid) ionogels with embedded electrodes capable of both adsorption and electrochemical reduction of CO2 is reported. The ionogels are prepared via radical polymerization and chemical crosslinking of a vinyl imidazolium trifluoromethanesulfonimide ionic liquid monomer in the presence of additional ionic liquids (ILs) that act as swelling agents and enhance ionic conductivity. The effects of the ILs concentration and the degree of crosslinking on the mechanical properties, conductivity, and ...


Formation Of Hollow Mos2/Carbon Microspheres For High Capacity And High Rate Reversible Alkali-Ion Storage, Tianyu Yang, Ji Liang, Irin Sultana, Md. Mokhlesur Rahman, Michael J. Monteiro, Ying I. Chen, Zongping Shao, S Ravi. P Silva, Jian Liu Jan 2018

Formation Of Hollow Mos2/Carbon Microspheres For High Capacity And High Rate Reversible Alkali-Ion Storage, Tianyu Yang, Ji Liang, Irin Sultana, Md. Mokhlesur Rahman, Michael J. Monteiro, Ying I. Chen, Zongping Shao, S Ravi. P Silva, Jian Liu

Australian Institute for Innovative Materials - Papers

Nanocomposites of carbon and molybdenum disulfide have attracted much attention due to their significant potential in energy conversion and storage applications. However, the preparation of these 0-D MoS 2 /carbon composites with controllable structures and desirable properties remains a major manufacturing challenge, particularly at low cost suitable for scaling-up. Here, we report a facile solution-based method to prepare porous hierarchical 0-D MoS 2 /carbon nanocomposites with vertical MoS 2 growth on a hollow carbon support, suitable for the electrochemical storage of lithium and sodium ions. The vertically aligned MoS 2 /hollow carbon material shows excellent performance in the storage of ...


Remarkable Enhancement In Sodium-Ion Kinetics Of Nafe2(Cn)(6) By Chemical Bonding With Graphene, Weijie Li, Chao Han, Qingbing Xia, Kai Zhang, Shulei Chou, Yong-Mook Kang, Jiazhao Wang, Hua-Kun Liu, Shi Xue Dou Jan 2018

Remarkable Enhancement In Sodium-Ion Kinetics Of Nafe2(Cn)(6) By Chemical Bonding With Graphene, Weijie Li, Chao Han, Qingbing Xia, Kai Zhang, Shulei Chou, Yong-Mook Kang, Jiazhao Wang, Hua-Kun Liu, Shi Xue Dou

Australian Institute for Innovative Materials - Papers

Hexacyanoferrate (Prussian blue, PB)/reduced graphene oxide (PB-RGO) composites with a synergistic structure (graphene/PB/graphene) and a chemical bond are fabricated using a facile one-step method that does not require any external chemical reducing agent. Here, Na4Fe(CN)6 is decomposed in an acidic solution to produce Fe2+ ions, which anchor onto the electronegative graphene oxide (GO) layers by electrostatic interaction and then reduce the GO. The formation of an FeOC chemical bond in the composite results in an excellent rate capability of the PB-RGO composite at room temperature, delivering capacities of 78.1, 68.9, and ...


Recent Progress On Liquid Metals And Their Applications, Guyue Bo, Long Ren, Xun Xu, Yi Du, Shi Xue Dou Jan 2018

Recent Progress On Liquid Metals And Their Applications, Guyue Bo, Long Ren, Xun Xu, Yi Du, Shi Xue Dou

Australian Institute for Innovative Materials - Papers

Gallium-based liquid metals show excellent thermal and electrical conductivities with low viscosity and non-toxicity. Their melting points are either lower than or close to room temperature, which endows them with additional advantages in comparison to the solid metals; for example, they are flexible, stretchable and reformable at room temperature. Recently, great improvements have been achieved in developing multifunctional devices by using Ga-based liquid metals, including actuators, flexible circuits, bio-devices and self-healing superconductors. Here, we review recent research progress on Gallium-based liquid metals, especially on the applications aspects. These applications are mainly based on the unique properties of liquid metals, including ...


Controlled Synthesis Of Mesoporous Nitrogen-Doped Carbons With Highly Ordered Two-Dimensional Hexagonal Mesostructures And Their Chemical Activation, Abeer Enaiet Allah, Haibo Tan, Xingtao Xu, Ahmed Farghali, Mohamed Khedr, Abdulmohsen Alshehri, Yoshio Bando, Nanjundan Kumar, Yusuke Yamauchi Jan 2018

Controlled Synthesis Of Mesoporous Nitrogen-Doped Carbons With Highly Ordered Two-Dimensional Hexagonal Mesostructures And Their Chemical Activation, Abeer Enaiet Allah, Haibo Tan, Xingtao Xu, Ahmed Farghali, Mohamed Khedr, Abdulmohsen Alshehri, Yoshio Bando, Nanjundan Kumar, Yusuke Yamauchi

Australian Institute for Innovative Materials - Papers

Ordered mesoporous nitrogen-doped carbon (OMNC) materials are considered as the most promising material for supercapacitors. In this study, a highly ordered two-dimensional (2D) hexagonal mesostructured polymer was synthesized through a facile assembly of triblock polymer micelles and phenol-melamine/formaldehyde resin via an organic-organic assembly process in aqueous solution. After calcination, the novel OMNC materials with 2D hexagonal mesostructures were obtained. By further KOH activation, the surface area and the porosity of the OMNC significantly improved, and the internal mesoporous structures were maintained. The activated OMNC-800A displayed a specific capacitance as high as 475.75 F g-1at 0.5 A g-1with ...


Thickness-Dependent Electronic Structure In Wte2 Thin Films, Feixiang Xiang, Ashwin Srinivasan, Z Du, Oleh Klochan, Shi Xue Dou, Alexander Hamilton, Xiaolin Wang Jan 2018

Thickness-Dependent Electronic Structure In Wte2 Thin Films, Feixiang Xiang, Ashwin Srinivasan, Z Du, Oleh Klochan, Shi Xue Dou, Alexander Hamilton, Xiaolin Wang

Australian Institute for Innovative Materials - Papers

We study the electronic structure of WTe2 thin films with different thicknesses. High-quality thin-film samples are obtained with carrier mobility up to 5000 cm2 V−1 s−1, which enables us to resolve the four main Fermi pockets from Shubnikov-de Haas (SdH) oscillations. Angle-resolved SdH oscillations show that the WTe2 thin films cross from three-dimensional to two-dimensional electronic systems at a thickness of ∼ 20 nm. Using the field effect, the nature of the Fermi pockets in thin-film WTe2 is identified, and the evolution of SdH oscillation frequencies is traced over different sample thicknesses. It is found that the frequencies dramatically ...