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Structure And Electrochemical Performance Modulation Of A Lini0.8co0.1mn0.1o2 Cathode Material By Anion And Cation Co-Doping For Lithium Ion Batteries, Rong Li, Yong Ming, Wei Xiang, Chunliu Xu, Guilin Feng, Yongchun Li, Yanxiao Chen, Zhenguo Wu, Ben-He Zhong, Xiaodong Guo
Structure And Electrochemical Performance Modulation Of A Lini0.8co0.1mn0.1o2 Cathode Material By Anion And Cation Co-Doping For Lithium Ion Batteries, Rong Li, Yong Ming, Wei Xiang, Chunliu Xu, Guilin Feng, Yongchun Li, Yanxiao Chen, Zhenguo Wu, Ben-He Zhong, Xiaodong Guo
Australian Institute for Innovative Materials - Papers
Ni-rich layered transition metal oxides show great energy density but suffer poor thermal stability and inferior cycling performance, which limit their practical application. In this work, a minor content of Co and B were co-doped into the crystal of a Ni-rich cathode (LiNi0.8Co0.1Mn0.1O2) using cobalt acetate and boric acid as dopants. The results analyzed by XRD, TEM, XPS and SEM reveal that the modified sample shows a reduced energy barrier for Li+ insertion/extraction and alleviated Li+/Ni2+ cation mixing. With the doping of B and Co, corresponding enhanced cycle stability was achieved with a high capacity retention of 86.1% at 1.0C …
Bio‑Derived Hierarchical Multicore-Shell Fe2n‑Nanoparticle‑Impregnated N‑Doped Carbon Nanofiber Bundles: A Host Material For Lithium‑/Potassium‑Ion Storage, Hongjun Jiang, Ling Huang, Yunhong Wei, Boya Wang, Hao Wu, Yun Zhang, Hua-Kun Liu, Shi Xue Dou
Bio‑Derived Hierarchical Multicore-Shell Fe2n‑Nanoparticle‑Impregnated N‑Doped Carbon Nanofiber Bundles: A Host Material For Lithium‑/Potassium‑Ion Storage, Hongjun Jiang, Ling Huang, Yunhong Wei, Boya Wang, Hao Wu, Yun Zhang, Hua-Kun Liu, Shi Xue Dou
Australian Institute for Innovative Materials - Papers
Despite the significant progress in the fabrication of advanced electrode materials, complex control strategies and tedious processing are often involved for most targeted materials to tailor their compositions, morphologies, and chemistries. Inspired by the unique geometric structures of natural biomacromolecules together with their high affinities for metal species, we propose the use of skin collagen fibers for the template crafting of a novel multicore-shell Fe2N-carbon framework anode configuration, composed of hierarchical N-doped carbon nanofiber bundles firmly embedded with Fe2N nanoparticles (Fe2N@N-CFBs). In the resultant heterostructure, the Fe2N nanoparticles firmly confined inside the carbon shells are spatially isolated but electronically well …
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
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 for the commercial application …
Hierarchical Porous Nio/B-Nimoo4 Heterostructure As Superior Anode Material For Lithium Storage, Zhijian Wang, Shilin Zhang, Hai Zeng, Haimin Zhao, Wei Sun, Meng Jiang, Chuanqi Feng, Jianwen Liu, Tengfei Zhou, Yang Zheng, Zaiping Guo
Hierarchical Porous Nio/B-Nimoo4 Heterostructure As Superior Anode Material For Lithium Storage, Zhijian Wang, Shilin Zhang, Hai Zeng, Haimin Zhao, Wei Sun, Meng Jiang, Chuanqi Feng, Jianwen Liu, Tengfei Zhou, Yang Zheng, Zaiping Guo
Australian Institute for Innovative Materials - Papers
Ternary transition metal oxides (TTMOs) have attracted considerable attention for rechargeable batteries because of their fascinating properties. However, the unsatisfactory electrochemical performance originating from the poor intrinsic electronic conductivity and inferior structural stability impedes their practical applications. Here, the novel hierarchical porous NiO/β-NiMoO4heterostructure is fabricated, and exhibits high reversible capacity, superior rate capability, and excellent cycling stability in Li-ion batteries (LIBs), which is much better than the corresponding single-phase NiMoO4and NiO materials. The significantly enhanced electrochemical properties can be attributed to its superior structural characteristics, including the large surface area, abundant pores, fast charge transfer, and catalytic effect of the …
Mos2 With An Intercalation Reaction As A Long-Life Anode Material For Lithium Ion Batteries, Zhe Hu, Qiannan Liu, Weiyi Sun, Weijie Li, Zhanliang Tao, Shulei Chou, Jun Chen, S X. Dou
Mos2 With An Intercalation Reaction As A Long-Life Anode Material For Lithium Ion Batteries, Zhe Hu, Qiannan Liu, Weiyi Sun, Weijie Li, Zhanliang Tao, Shulei Chou, Jun Chen, S X. Dou
Australian Institute for Innovative Materials - Papers
MoS2 with expanded layers was synthesized and characterized as an anode material for lithium ion batteries in an ether-based electrolyte by cutting off the terminal discharge voltage at 1.0 V to prevent a MoS2 conversion reaction. The as-prepared MoS2 achieved 96% capacity retention even after 1400 cycles and showed good performance in a full cell with LiCoO2 as the counter electrode.
Aqueous Electrosynthesis Of An Electrochromic Material Based Water-Soluble Edot-Menh2 Hydrochloride, Hui Sun, Long Zhang, Liqi Dong, Xiaofei Zhu, Shouli Ming, Youshan Zhang, Huakun Xing, Xuemin Duan, Jingkun Xu
Aqueous Electrosynthesis Of An Electrochromic Material Based Water-Soluble Edot-Menh2 Hydrochloride, Hui Sun, Long Zhang, Liqi Dong, Xiaofei Zhu, Shouli Ming, Youshan Zhang, Huakun Xing, Xuemin Duan, Jingkun Xu
Australian Institute for Innovative Materials - Papers
2'-Aminomethyl-3,4-ethylenedioxythiophene (EDOT-MeNH2) showed unsatisfactory results when its polymerization occurred in organic solvent in our previous report. Therefore, a water-soluble EDOT derivative was designed by using hydrochloric modified EDOT-MeNH2 (EDOT-MeNH2·HCl) and electropolymerized in aqueous solution to form the corresponding polymer with excellent electrochromic properties. Moreover, the polymer was systematically explored, including electrochemical, optical properties and structure characterization. Cyclic voltammetry showed low oxidation potential of EDOT-MeNH2·HCl (0.85 V) in aqueous solution, leading to the facile electrodeposition of uniform the polymer film with outstanding electroactivity. Compared with poly(2′-aminomethyl- 3,4-ethylenedioxythiophene) (PEDOT-MeNH2), poly(2′-aminomethyl-3,4-ethylenedioxythiophene salt) (PEDOT-MeNH3 +A-) revealed higher efficiencies (156 cm2 C-1), lower bandgap (1.68 …
A Methodical Approach For Fabrication Of Binder-Free Li2s-C Composite Cathode With High Loading Of Active Material For Li-S Battery, Mohammad Kaiser, Xin Liang, Hua-Kun Liu, S X. Dou, Jiazhao Wang
A Methodical Approach For Fabrication Of Binder-Free Li2s-C Composite Cathode With High Loading Of Active Material For Li-S Battery, Mohammad Kaiser, Xin Liang, Hua-Kun Liu, S X. Dou, Jiazhao Wang
Australian Institute for Innovative Materials - Papers
Lithium sulfide (Li2S), which has a theoretical capacity of 1166 mA h/g, is considered as a promising cathode material for the Li-S battery. The electrochemical performance of microsized Li2S is impaired, however, by its low electrical conductivity as well as first cycle high activation potential problem. In this work, microsized Li2S powder had been ball-milled with different carbon sources to synthesize Li2S-C composites as well as to find the suitable carbon sources, which were then capillary-deposited in three-dimensional multi-layered Ni foam from a dioxolane-containing mixture to fabricate a binder-free Li2S-C composite cathode. A large amount of active material (∼5 mg/cm2) …
Improved Cycling Stability Of Lithium-Sulphur Batteries By Enhancing The Retention Of Active Material With A Sandwiched Hydrothermally Treated Graphite Film, Yuede Pan, Shulei Chou, Hua-Kun Liu, S X. Dou
Improved Cycling Stability Of Lithium-Sulphur Batteries By Enhancing The Retention Of Active Material With A Sandwiched Hydrothermally Treated Graphite Film, Yuede Pan, Shulei Chou, Hua-Kun Liu, S X. Dou
Australian Institute for Innovative Materials - Papers
A new lithium-sulphur battery with a hydrothermally treated graphite film sandwiched between the separator and the sulphur cathode shows increased capacity, enhanced cycling stability and improved coulombic efficiency. After 50 cycles, a high capacity of 631 mA h g-1 is maintained, compared to 203 mA h g-1 for the Li-S battery with conventional configuration. Moreover, the coulombic efficiency is increased to near 100% from around 94%. This improved electrochemical performance could be attributed to the new cell configuration, because the graphite film greatly retains the active material by alleviating the polysulphide shuttling problem and providing extra reaction sites for sulphur …
Unique Urchin-Like Ca2ge7o16 Hierarchical Hollow Microspheres As Anode Material For The Lithium Ion Battery, Dan Li, Chuanqi Feng, Hua-Kun Liu, Zaiping Guo
Unique Urchin-Like Ca2ge7o16 Hierarchical Hollow Microspheres As Anode Material For The Lithium Ion Battery, Dan Li, Chuanqi Feng, Hua-Kun Liu, Zaiping Guo
Australian Institute for Innovative Materials - Papers
Germanium is an outstanding anode material in terms of electrochemical performance, especially rate capability, but its developments are hindered by its high price because it is rare in the crust of earth, and its huge volume variation during the lithium insertion and extraction. Introducing other cheaper elements into the germanium-based material is an efficient way to dilute the high price, but normally sacrifice its electrochemical performance. By the combination of nanostructure design and cheap element (calcium) introduction, urchin-like Ca2Ge7O16 hierarchical hollow microspheres have been successfully developed in order to reduce the price and maintain the …
Growth Of Mos2@C Nanobowls As A Lithium-Ion Battery Anode Material, Chunyu Cui, Xiu Li, Zhe Hu, Jiantie Xu, Hua-Kun Liu, Jianmin Ma
Growth Of Mos2@C Nanobowls As A Lithium-Ion Battery Anode Material, Chunyu Cui, Xiu Li, Zhe Hu, Jiantie Xu, Hua-Kun Liu, Jianmin Ma
Australian Institute for Innovative Materials - Papers
Layered MoS2 has attracted much attention as a promising anode material for lithium ion batteries. The intrinsically poor electrical/ionic conductivity, volume expansion and pulverization, stress accumulation and unstable solid-electrolyte interface formation within MoS2 electrodes during the lithiation-delithiation process significantly result in their fast capacity fading, poor rate capability and cycle life. To address these critical issues, a novel nanobowl structure for MoS2 with a carbon coating (MoS2@C-400, 500, 600) is successfully fabricated by a facile solvothermal method, followed by a post-annealing process. The fabricated MoS2@C-600 and MoS2@C-500 exhibited high reversible capacities of 1164.4 and 1076.4 mA h g-1 at 0.2C, …
Large-Scale Synthesis Of Ordered Mesoporous Carbon Fiber And Its Application As Cathode Material For Lithium-Sulfur Batteries, Hongqiang Wang, Chaofeng Zhang, Zhixin Chen, Hua-Kun Liu, Zaiping Guo
Large-Scale Synthesis Of Ordered Mesoporous Carbon Fiber And Its Application As Cathode Material For Lithium-Sulfur Batteries, Hongqiang Wang, Chaofeng Zhang, Zhixin Chen, Hua-Kun Liu, Zaiping Guo
Australian Institute for Innovative Materials - Papers
A novel type of one-dimensional ordered mesoporous carbon fiber has been prepared via the electrospinning technique by using resol as the carbon source and triblock copolymer Pluronic F127 as the template. Sulfur is then encapsulated in this ordered mesoporous carbon fibers by a simple thermal treatment. The interwoven fibrous nanostructure has favorably mechanical stability and can provide an effective conductive network for sulfur and polysulfides during cycling. The ordered mesopores can also restrain the diffusion of long-chain polysulfides. The resulting ordered mesoporous carbon fiber sulfur (OMCF-S) composite with 63% S exhibits high reversible capacity, good capacity retention and enhanced rate …
Hollow Carbon Spheres With Encapsulated Germanium As An Anode Material For Lithium Ion Batteries, Dan Li, Chuanqi Feng, Hua-Kun Liu, Zaiping Guo
Hollow Carbon Spheres With Encapsulated Germanium As An Anode Material For Lithium Ion Batteries, Dan Li, Chuanqi Feng, Hua-Kun Liu, Zaiping Guo
Australian Institute for Innovative Materials - Papers
A novel composite consisting of hollow carbon spheres with encapsulated germanium (Ge@HCS) was synthesized by introducing a germanium precursor into the porous-structured hollow carbon spheres. The carbon spheres not only function as a scaffold to hold the germanium and thus maintain the structural integrity of the composite, but also increase the electrical conductivity. The voids and vacancies that are formed after the reduction of germanium dioxide to germanium provide free space for accommodating the volume changes during discharging-charging processes, thus preventing pulverization. The obtained Ge@HCS composite exhibits excellent lithium storage performance, as revealed by electrochemical evaluation.
Α-Fe2o3/Graphene Nanocomposite As Anode Material For Sodium-Ion Batteries With Enhanced Capacity Retention, Zhijia Zhang, Yunxiao Wang, Shulei Chou, Huijun Li, Hua-Kun Liu, Jiazhao Wang
Α-Fe2o3/Graphene Nanocomposite As Anode Material For Sodium-Ion Batteries With Enhanced Capacity Retention, Zhijia Zhang, Yunxiao Wang, Shulei Chou, Huijun Li, Hua-Kun Liu, Jiazhao Wang
Australian Institute for Innovative Materials - Papers
Among the different energy storage systems, rechargeable lithium-ion batteries (LIBs) have been widely applied in various portable electronic devices due to their high energy densities, long cycle life, and lack of significant memory effect [1]. For wide-scale implementation of renewable energy, LIBs, however, face challenges related to their safety, lifetime, and cost. Based on the wide availability and low cost of sodium, sodium-ion batteries (SIBs) have the potential for meeting the demands of large-scale and sustainable applications. Many cathode materials have been proposed, whereas only a few anode materials have been investigated for SIBs [2]. The sodium ion (1.02 Å) …
Three-Dimensional-Network Li3v2(Po4) 3/C Composite As High Rate Lithium Ion Battery Cathode Material And Its Compatibility With Ionic Liquid Electrolytes, Jiantie Xu, Shulei Chou, Cuifeng Zhou, Qinfen Gu, Hua-Kun Liu, S X. Dou
Three-Dimensional-Network Li3v2(Po4) 3/C Composite As High Rate Lithium Ion Battery Cathode Material And Its Compatibility With Ionic Liquid Electrolytes, Jiantie Xu, Shulei Chou, Cuifeng Zhou, Qinfen Gu, Hua-Kun Liu, S X. Dou
Australian Institute for Innovative Materials - Papers
A high performance Li3V2(PO4)3 cathode material for lithium ion batteries was synthesized by the microwave-assisted hydrothermal method followed by a post annealing process. The synchrotron X-ray diffraction analysis results confirmed that single-phase Li3V2(PO4)3 with monoclinic structure was obtained. Scanning electron microscope and transmission electron microscope images revealed that the as-prepared Li3V 2(PO4)3 was composed of nanowires and microsized particles. Electrochemical results demonstrated that the Li 3V2(PO4)3 electrode measured at 10 C after 500 cycles can deliver discharge capacities of 85.4 mAh g-1 and 103.4 mAh g-1, with a capacity retention of 99.3% and 95.9%, in the voltage ranges of 3.0-4.3 …
A Novel Carbon Nanotube Modified Scaffold As An Efficient Biocathode Material For Improved Microbial Electrosynthesis, Ludovic Jourdin, Stefano Freguia, Bogdan C. Donose, Jun Chen, Gordon G. Wallace, Jurg Keller, Victoria Flexer
A Novel Carbon Nanotube Modified Scaffold As An Efficient Biocathode Material For Improved Microbial Electrosynthesis, Ludovic Jourdin, Stefano Freguia, Bogdan C. Donose, Jun Chen, Gordon G. Wallace, Jurg Keller, Victoria Flexer
Australian Institute for Innovative Materials - Papers
We report on a novel biocompatible, highly conductive three-dimensional cathode manufactured by direct growth of flexible multiwalled carbon nanotubes on reticulated vitreous carbon (NanoWeb-RVC) for the improvement of microbial bioelectrosynthesis (MES). NanoWeb-RVC allows for an enhanced bacterial attachment and biofilm development within its hierarchical porous structure. 1.7 and 2.6 fold higher current density and acetate bioproduction rate normalized to total surface area were reached on NanoWeb-RVC versus a carbon plate control for the microbial reduction of carbon dioxide by mixed cultures. This is the first study showing better intrinsic efficiency as biocathode material of a three-dimensional electrode versus a flat …
Cuo Single Crystal With Exposed {001} Facets-A Highly Efficient Material For Gas Sensing And Li-Ion Battery Applications, Dawei Su, Xiuqiang Xie, S X. Dou, Guoxiu Wang
Cuo Single Crystal With Exposed {001} Facets-A Highly Efficient Material For Gas Sensing And Li-Ion Battery Applications, Dawei Su, Xiuqiang Xie, S X. Dou, Guoxiu Wang
Australian Institute for Innovative Materials - Papers
Single crystal copper oxide nanoplatelets with a high percentage of {001} facets were synthesized by a facile hydrothermal approach. The as-prepared materials were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, field emission scanning electron microscopy, and high resolution transmission microscopy. Via density functional theory calculations, it was found that the {001} facets are active crystal planes. When the single crystal CuO nanoplatelets were applied as an anode material in Li-ion batteries, they demonstrated outstanding electrochemical performance with high lithium storage capacity, satisfactory cyclability, and excellent high rate capacity. When used as a sensing material in gas sensors, they exhibited …
Study On Vanadium Substitution To Iron In Li2fep 2o7 As Cathode Material For Lithium-Ion Batteries, Jiantie Xu, Shulei Chou, Qinfen Gu, M F. Md Din, Hua-Kun Liu, S X. Dou
Study On Vanadium Substitution To Iron In Li2fep 2o7 As Cathode Material For Lithium-Ion Batteries, Jiantie Xu, Shulei Chou, Qinfen Gu, M F. Md Din, Hua-Kun Liu, S X. Dou
Australian Institute for Innovative Materials - Papers
A series of Li2Fe1-3x/2VxP 2O7 (x = 0, 0.025, 0.05, 0.075, and 0.1) cathode materials for LIBs were prepared by the sol-gel method. Structural characterization of Li2Fe1-3x/2VxP2O7 (x = 0, 0.025, 0.05, 0.075, and 0.1) samples was conducted by synchrotron X-ray diffraction. The morphology and oxidation states of Fe2+ and V 3+ in the Li2Fe1-3x/2VxP 2O7 samples were confirmed by scanning electron microscopy and magnetic susceptibility measurements, respectively. The electrochemical measurements indicated that Li2Fe1-3x/2VxP 2O7 (x = 0.025) delivered the higher reversible capacity of 79.9 mAh g-1 at 1 C in the voltage range of 2.0 - 4.5 V with …
One-Step Synthesis Of Graphene/Polypyrrole Nanofiber Composites As Cathode Material For A Biocompatible Zinc/Polymer Battery, Sha Li, Kewei Shu, Chen Zhao, Caiyun Wang, Zaiping Guo, Gordon G. Wallace, Hua-Kun Liu
One-Step Synthesis Of Graphene/Polypyrrole Nanofiber Composites As Cathode Material For A Biocompatible Zinc/Polymer Battery, Sha Li, Kewei Shu, Chen Zhao, Caiyun Wang, Zaiping Guo, Gordon G. Wallace, Hua-Kun Liu
Australian Institute for Innovative Materials - Papers
The significance of developing implantable, biocompatible, miniature power sources operated in a low current range has become manifest in recent years to meet the demands of the fast-growing market for biomedical microdevices. In this work, we focus on developing high-performance cathode material for biocompatible zinc/polymer batteries utilizing biofluids as electrolyte. Conductive polymers and graphene are generally considered to be biocompatible and suitable for bioengineering applications. To harness the high electrical conductivity of graphene and the redox capability of polypyrrole (PPy), a polypyrrole fiber/graphene composite has been synthesized via a simple one-step route. This composite is highly conductive (141 S cm …
Zno-Doped Lifepo4 Cathode Material For Lithium-Ion Battery Fabricated By Hydrothermal Method, Yemin Hu, Jun Yao, Zhe Zhao, Mingyuan Zhu, Ying Li, Hongming Jin, Huijun Zhao, Jiazhao Wang
Zno-Doped Lifepo4 Cathode Material For Lithium-Ion Battery Fabricated By Hydrothermal Method, Yemin Hu, Jun Yao, Zhe Zhao, Mingyuan Zhu, Ying Li, Hongming Jin, Huijun Zhao, Jiazhao Wang
Australian Institute for Innovative Materials - Papers
LiFePO4 particles doped with zinc oxide was synthesized via a hydrothermal route and used as cathode material for lithium-ion battery. Sample of preferable shape and structure was obtained by a concise and efficient process. ZnO doping into the LiFePO4 matrix was positively confirmed by the results of X-ray diffraction (XRD); high-resolution transmission electron microscopy (HRTEM); energy dispersive spectrometer (EDS), and X-ray photoelectron spectroscopy (XPS). LiFePO4 doped with ZnO tends to form nanometer-size and homogeneous particles, which can improve markedly the performance and stability of charge-discharge cycle. A specific discharge capacity of ZnO-doped LiFePO4 at 132.3 mAh g-1 was achieved, with …
Tubular Graphitic-C 3 N 4 : A Prospective Material For Energy Storage And Green Photocatalysis, Muhammad Nawaz Tahir, Chuanbao Cao, Faheem K. Butt, Faryal Idrees, Nasir Mahmood, Zulfiqar Ali, Imran Aslam, M Tanveer, Muhammad Rizwan, Tariq Mahmood
Tubular Graphitic-C 3 N 4 : A Prospective Material For Energy Storage And Green Photocatalysis, Muhammad Nawaz Tahir, Chuanbao Cao, Faheem K. Butt, Faryal Idrees, Nasir Mahmood, Zulfiqar Ali, Imran Aslam, M Tanveer, Muhammad Rizwan, Tariq Mahmood
Australian Institute for Innovative Materials - Papers
We have established a facile and scaleable approach to fabricate tubular graphitic-C3N4 using melamine. The construction of the unique tubular morphology is a result of the pre-treatment of melamine with HNO3. Herein, for the first time, we have explored the electrochemical properties of g-C3N4 as an electrode material for supercapacitors. Tubular g-C3N4 has significant advantages due to its distinctive morphology, high surface area (182.61 m2 g-1) and combination of carbon with nitrogen. Therefore, tubular g-C3N4 demonstrated a good specific capacitance of 233 F g-1 at a current density of 0.2 A g-1 in 6 M …
Platinum Electrodeposition On Unsupported Single Wall Carbon Nanotubes And Its Application As Methane Sensing Material, Enid Contes-De Jesus, Diana Santiago, Gilberto Casillas, Alvaro Mayoral, Cesar Magen, Miguel Jose-Yacaman, Jing Li, Carlos R. Cabrera
Platinum Electrodeposition On Unsupported Single Wall Carbon Nanotubes And Its Application As Methane Sensing Material, Enid Contes-De Jesus, Diana Santiago, Gilberto Casillas, Alvaro Mayoral, Cesar Magen, Miguel Jose-Yacaman, Jing Li, Carlos R. Cabrera
Australian Institute for Innovative Materials - Papers
This paper reports the decoration of single wall carbon nanotubes (SWCNTs) with platinum (Pt) nanoparticles using an electrochemical technique, rotating disk slurry electrode (RoDSE). Pt/SWCNTs were electrochemically characterized by cyclic voltammetry technique (CV) and physically characterized through the use of transmission electron microscopy (TEM), energy dispersive spectroscopy - X-ray florescence (EDS-XRF) and X-ray diffraction (XRD). After characterization it was found that electrodeposited nanoparticles had an average particle size of 4.1 ± 0.8 nm. Pt/SWCNTs were used as sensing material for methane (CH4) detection and showed improved sensing properties in a range of concentration from 50 ppm to 200 ppm parts …
Spinel Linixmn2-Xo4 As Cathode Material For Aqueous Rechargeable Lithium Batteries, F X. Wang, S Y. Xiao, Y Shi, L L. Liu, Y S. Zhu, Y P. Wu, J. Z. Wang, R Holze
Spinel Linixmn2-Xo4 As Cathode Material For Aqueous Rechargeable Lithium Batteries, F X. Wang, S Y. Xiao, Y Shi, L L. Liu, Y S. Zhu, Y P. Wu, J. Z. Wang, R Holze
Australian Institute for Innovative Materials - Papers
Ni-doped spinel LiNixMn2-xO4 (x = 0, 0.05, 0.10) samples were prepared by a sol-gel method. Structure and morphology of the samples were characterized by X-ray diffraction, scanning electron microscopy, Brunnauer-Emmet-Teller method and inductively coupled plasma atomic absorption spectrometry. The electrochemical behavior as a cathode material (positive mass) for aqueous rechargeable lithium batteries (ARLBs) was investigated by cyclic voltammetry, electrochemical impedance spectroscopy, capacity measurements and cycling tests. The results show that the LiNi 0.1Mn1.9O4 electrode presents the best rate and cycling performance but low reversible capacity. In contrast, the LiNi 0.05Mn1.95O4 electrode shows a higher reversible capacity and relatively good cycling …
Material Characterization At Low Frequencies Using Thz And Raman Spectroscopy, Y Kutuvantavida, G V M Williams, E M. Pogson, D Bhuiyan, K Radhanpura, Roger A. Lewis
Material Characterization At Low Frequencies Using Thz And Raman Spectroscopy, Y Kutuvantavida, G V M Williams, E M. Pogson, D Bhuiyan, K Radhanpura, Roger A. Lewis
Australian Institute for Innovative Materials - Papers
We present results from wideband THz, low wave-number Raman, and FTIR measurements on benzoic acid and two of its derivatives. The low energy vibrational modes have been identified and compared with the results from calculations.
Lifepo4-Fe2p-C Composite Cathode: An Environmentally Friendly Promising Electrode Material For Lithium-Ion Battery, M. Mahfuzur Rahman, Jiazhao Wang, Rong Zeng, David Wexler, Hua-Kun Liu
Lifepo4-Fe2p-C Composite Cathode: An Environmentally Friendly Promising Electrode Material For Lithium-Ion Battery, M. Mahfuzur Rahman, Jiazhao Wang, Rong Zeng, David Wexler, Hua-Kun Liu
Australian Institute for Innovative Materials - Papers
In this investigation, the synthesis strategy is involved the creation of LiFePO4-Fe2P-C composites with a porous conductive architecture, which includes distinct regions or clusters containing antiferromagnetic LiFePO4 in close proximity to ferromagnetic Fe2P. The microstructure is achieved by using a simple ultra-fast solvent assisted manual grinding method, combined with solid state reaction, which can replace the time-consuming high energy ball milling method. The crystalline structure, morphology, and electrochemical characterization of the synthesised product are investigated systematically. The electrochemical performance is outstanding, especially the high C rate. The composite cathode is found to display specific capacity of 167 mAh g-1 at …
Irradiation Si On Carbon Nanotube Paper As A Flexible Anode Material For Lithium-Ion Batteries, Shulei Chou, Mihail Ionescu, Jia-Zhao Wang, Brad Winton, Hua-Kun Liu
Irradiation Si On Carbon Nanotube Paper As A Flexible Anode Material For Lithium-Ion Batteries, Shulei Chou, Mihail Ionescu, Jia-Zhao Wang, Brad Winton, Hua-Kun Liu
Australian Institute for Innovative Materials - Papers
Silicon single walled carbon nanotube composite paper was modified by low energy ion implantation using 5i to obtain a flexible composite paper. Raman and FE-SEM results show that structure of SWCNT could be destroyed by the implantation. Electrochemical measurements display that the implanted SI can improve the specific capacity and the reversible capacity of CNT paper. After 50 cycles, the specific capacity of 5Hmplanted CNT paper is 30 per cent higher than the pristine CNT.
Magnetic Properties Of Bi2femno6: A Multiferroic Material With Double-Perovskite Structure, Yi Du, Zhenxiang Cheng, S X. Dou, Xiaolin Wang, Hua Zhao, Hideo Kimura
Magnetic Properties Of Bi2femno6: A Multiferroic Material With Double-Perovskite Structure, Yi Du, Zhenxiang Cheng, S X. Dou, Xiaolin Wang, Hua Zhao, Hideo Kimura
Australian Institute for Innovative Materials - Papers
Single phase Bi2FeMnO6 was synthesized on Si substrates by an electrospray method. Three peaks were observed in the temperature dependence of magnetization curve, which is attributed to the inhomogeneous distribution of Fe3+ and Mn3+. The observed magnetic peaks at 150 K, 260 K, and 440 K correspond to orderings of the ferrimagnetic Fe–O–Mn, and antiferromagnetic Mn–O–Mn and Fe–O–Fe, respectively. Heat capacity measurements were carried out to confirm these magnetic transitions. The Debye temperature of Bi2FeMnO6 is 339 K, calculated from Debye–Einstein fitting.
Giant Magnetic Entropy Change In Colossal Magnetoresistance In La0.7ca0.3mno3 Material In Low Field, Jyotish Debnath, Rong Zeng, Jung Ho Kim, S X. Dou
Giant Magnetic Entropy Change In Colossal Magnetoresistance In La0.7ca0.3mno3 Material In Low Field, Jyotish Debnath, Rong Zeng, Jung Ho Kim, S X. Dou
Australian Institute for Innovative Materials - Papers
The structural, magnetic, and magnetocaloric properties of the manganite La0.7Ca0.3MnO3 have been studied. Change in the giant magnetic entropy was observed without any noticeable magnetic hysteresis but with small thermal hysteresis losses. We observed a first order magnetic phase transition around 251 K. The magnetic entropy change observed in this work is estimated to be 5.27 J/kg K for field changes from 0 to 1.5 T based on magnetization measurements. This value is about twice as large as those for other perovskite manganites and is even larger than for Gd-based magnetic materials at low fields. …