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Lithium ion battery

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https://www.readbyqxmd.com/read/28340522/tin-oxide-carbon-coated-sepiolite-nanofibers-with-enhanced-lithium-ion-storage-property
#1
Kai Hou, Xin Wen, Peng Yan, Aidong Tang, Huaming Yang
Natural sepiolite (Sep) nanofibers were coated with carbon and nanoscale SnO2 to prepare an emerging nanocomposite (SnO2-C@Sep), which exhibited enhanced electrochemical performance. Sepiolite could act as a steady skeleton, carbon coating principally led sepiolite from an isolated to an electric state, and decoration of nanoscale SnO2 was beneficial to the functionization of sepiolite. Cycling performances indicated that SnO2-C@Sep showed higher discharge capacities than commercial SnO2 after 50 cycles. The nanocomposite SnO2-C@Sep possessed enhanced lithium storage properties with stable capacity retention and low cost, which could open up a new strategy to synthesize a variety of functional hybrid materials based on the cheap and abundant clay and commercialization of lithium-metal oxide batteries...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28334522/microwave-assisted-morphology-evolution-of-fe-based-metal-organic-frameworks-and-their-derived-fe2o3-nanostructures-for-li-ion-storage
#2
Wenxiang Guo, Weiwei Sun, Li-Ping Lv, Shaofeng Kong, Yong Wang
Metal-organic-framework (MOF) approach is demonstrated as an effective strategy for the morphology evolution control of MIL-53(Fe) with assistance of microwave irradiation. Owing to the homogenous nucleation offered by microwave irradiation and confined porosity and skeleton by MOF templates, various porous Fe2O3 nanostructures including spindle, concave octahedron, solid octahedron, yolk-shell octahedron, and nanorod with porosity control are derived by simply adjusting irradiation time. The formation mechanism for the MOF precursors and their derived iron oxides with morphology control are investigated...
March 23, 2017: ACS Nano
https://www.readbyqxmd.com/read/28333439/a-top-down-strategy-to-synthesize-mesoporous-dual-carbon-armored-mno-nanoparticles-for-lithium-ion-battery-anodes
#3
Wei Zhang, Jiannian Li, Jie Zhang, Jinzhi Sheng, Ting He, Meiyue Tian, Yufeng Zhao, Changjun Xie, Liqiang Mai, Shichun Mu
To overcome inferior rate capability and cycle stability of MnO-based materials as a lithium-ion battery anode associated with the pulverization and gradual aggregation during conversion process, we construct robust mesoporous N-doped carbon (N-C) protected MnO nanoparticles on reduced graphene oxide (rGO) (MnO@N-C/rGO) by a simple top-down incorporation strategy. Such dual carbon protection endows MnO@N-C/rGO with excellent structural stability and enhanced charge transfer kinetics. At 100 mA g-1, it exhibits superior rate capability as high as 864...
March 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28332814/hydrofluoric-acid-free-electroless-deposition-of-metals-on-silicon-in-ionic-liquids-and-its-enhanced-performance-in-lithium-storage
#4
Abhishek Lahiri, Tianqi Lu, Niklas Behrens, Natalia Borisenko, Guozhu Li, Frank Endres
Metal nanoparticles such as Au, Ag, Pt, and so forth have been deposited on silicon by electroless deposition in the presence of hydrofluoric acid (HF) for applications such as oxygen reduction reaction, surface-enhanced Raman spectroscopy, as well as for lithium ion batteries. Here, we show an HF-free process wherein metals such as Sb and Ag could be deposited onto electrodeposited silicon in ionic liquids. We further show that, compared to electrodeposited silicon, Sb-modified Si demonstrates a better performance for lithium storage...
March 24, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28332673/hierarchical-porous-nico2o4-nanosheet-arrays-directly-grown-on-carbon-cloth-with-superior-lithium-storage-performance
#5
Li Zhao, Lei Wang, Peng Yu, Chungui Tian, He Feng, Zhongwei Diao, Honggang Fu
Binary metal oxides have been explored as advanced candidates in lithium-ion battery (LIB) anodes due to their high specific capacity. Herein, the hierarchical structures of porous NiCo2O4 nanosheets directly grown on a conductive carbon cloth substrate (3D NCO-PSA/CC) were obtained by a facile in situ synthetic strategy. When applied as a binder-free LIB anode, it exhibited satisfactory performance with a high discharge capacity (a first discharge capacity of 2090.8 mA h g(-1) and a stable capacity of 1687...
March 23, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28331782/polyanion-type-electrode-materials-for-sodium-ion-batteries
#6
REVIEW
Qiao Ni, Ying Bai, Feng Wu, Chuan Wu
Sodium-ion batteries, representative members of the post-lithium-battery club, are very attractive and promising for large-scale energy storage applications. The increasing technological improvements in sodium-ion batteries (Na-ion batteries) are being driven by the demand for Na-based electrode materials that are resource-abundant, cost-effective, and long lasting. Polyanion-type compounds are among the most promising electrode materials for Na-ion batteries due to their stability, safety, and suitable operating voltages...
March 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/28328167/silicene-a-promising-anode-for-lithium-ion-batteries
#7
REVIEW
Jincheng Zhuang, Xun Xu, Germanas Peleckis, Weichang Hao, Shi Xue Dou, Yi Du
Silicene, a single-layer-thick silicon nanosheet with a honeycomb structure, is successfully fabricated by the molecular-beam-epitaxy (MBE) deposition method on metallic substrates and by the solid-state reaction method. Here, recent progress on the features of silicene that make it a prospective anode for lithium-ion batteries (LIBs) are discussed, including its charge-carrier mobility, chemical stability, and metal-silicene interactions. The electrochemical performance of silicene is reviewed in terms of both theoretical predictions and experimental measurements, and finally, its challenges and outlook are considered...
March 22, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28328016/a-tunable-3d-nanostructured-conductive-gel-framework-electrode-for-high-performance-lithium-ion-batteries
#8
Ye Shi, Jun Zhang, Andrea M Bruck, Yiman Zhang, Jing Li, Eric A Stach, Kenneth J Takeuchi, Amy C Marschilok, Esther S Takeuchi, Guihua Yu
This study develops a tunable 3D nanostructured conductive gel framework as both binder and conductive framework for lithium ion batteries. A 3D nanostructured gel framework with continuous electron pathways can provide hierarchical pores for ion transport and form uniform coatings on each active particle against aggregation. The hybrid gel electrodes based on a polypyrrole gel framework and Fe3 O4 nanoparticles as a model system in this study demonstrate the best rate performance, the highest achieved mass ratio of active materials, and the highest achieved specific capacities when considering total electrode mass, compared to current literature...
March 22, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28327775/nanospherical-solid-electrolyte-interface-layer-formation-in-binder-free-carbon-nanotube-aerogel-si-nanohybrids-to-provide-lithium-ion-battery-anodes-with-a-long-cycle-life-and-high-capacity
#9
Hyung Cheoul Shim, Ilhwan Kim, Chang-Su Woo, Hoo-Jeong Lee, Seungmin Hyun
Silicon anodes for lithium ion batteries (LiBs) have been attracting considerable attention due to a theoretical capacity up to about 10 times higher than that of conventional graphite. However, huge volume expansion during the cycle causes cracks in the silicon, resulting in the degradation of cycling performance and eventual failure. Moreover, low electrical conductivity and an unstable solid electrolyte interface (SEI) layer resulting from repeated changes in volume still block the next step forward for the commercialization of the silicon material...
March 22, 2017: Nanoscale
https://www.readbyqxmd.com/read/28327714/elemental-two-dimensional-nanosheets-beyond-graphene
#10
REVIEW
Xiangkai Kong, Qiangchun Liu, Changlin Zhang, Zhenmeng Peng, Qianwang Chen
The great success of graphene has encouraged the fast development of other two-dimensional (2D) nanosheets, which have attracted extensive attention in different scientific fields encompassing field effect transistors, lithium-ion batteries, and catalysis. With atomic-scale thickness, almost all of the atoms are exposed on the surface, providing an extremely high specific surface area, in conjunction with special physical, chemical, and electronic properties, owing to the quantum confinement effects, which enable their surface phase to be as important as the bulk counterparts...
March 22, 2017: Chemical Society Reviews
https://www.readbyqxmd.com/read/28326766/various-structured-molybdenum-based-nanomaterials-as-advanced-anode-materials-for-lithium-ion-batteries
#11
Zexing Wu, Wen Lei, Jie Wang, Rong Liu, Kedong Xia, Cuijuan Xuan, Deli Wang
A facile and scalable solvothermal high-temperature treatment strategy was developed to construct few-layered ultra-small MoS2 with less than three layers. These are embedded in carbon spheres (MoS2-C) and can be used as advanced anode material for lithium ion batteries (LIBs). In the resulting architecture, the intimate contact between MoS2 surface and carbon spheres can effectively avert aggregation and volume expansion of MoS2 during the lithiation-delithiation process. Moreover, it improves the structural integrity of the electrode remarkably, while the conductive carbon spheres provide quick transport of both electrons and ions within the electrode...
March 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28325708/use-of-glucose-as-reductant-to-recover-co-from-spent-lithium-ions-batteries
#12
Qi Meng, Yingjie Zhang, Peng Dong
A hydrometallurgical leaching process has been developed for recovery of Co and Li from cathode material (LiCoO2) collected from spent LIBs using a mix solution of glucose and phosphoric acid. The spent LiCoO2 before and after leaching process are analyzed by scanning electron microscopy. A leaching rate of about 98% Co and nearly 100% Li is presented with 1.5mol/L phosphoric acid and 0.02mol/L glucose at 80°C in about 2h. During leaching process, glucose was oxidized into monocarboxylic acid with reduction of Co(III) to Co(II)...
March 18, 2017: Waste Management
https://www.readbyqxmd.com/read/28325707/leaching-process-for-recovering-valuable-metals-from-the-lini1-3co1-3mn1-3o2-cathode-of-lithium-ion-batteries
#13
Li-Po He, Shu-Ying Sun, Xing-Fu Song, Jian-Guo Yu
In view of the importance of environmental protection and resource recovery, recycling of spent lithium-ion batteries (LIBs) and electrode scraps generated during manufacturing processes is quite necessary. An environmentally sound leaching process for the recovery of Li, Ni, Co, and Mn from spent LiNi1/3Co1/3Mn1/3O2-based LIBs and cathode scraps was investigated in this study. Eh-pH diagrams were used to determine suitable leaching conditions. Operating variables affecting the leaching efficiencies for Li, Ni, Co, and Mn from LiNi1/3Co1/3Mn1/3O2, such as the H2SO4 concentration, temperature, H2O2 concentration, stirring speed, and pulp density, were investigated to determine the most efficient conditions for leaching...
March 18, 2017: Waste Management
https://www.readbyqxmd.com/read/28324727/lithium-vanadate-nanowires-reduced-graphene-oxide-nanocomposites-on-titanium-foil-with-super-high-capacities-for-lithium-ion-batteries
#14
Yunhe Cao, Danyang Chai, Zhiping Luo, Ming Jiang, Weilin Xu, Chuanxi Xiong, Shan Li, Hui Liu, Dong Fang
With a theoretically high capacity and suitable discharge/charge plateaus, lithium vanadates (such as Li0.04V2O5) can be used as cathode material for lithium ion batteries. Herein, Li0.04V2O5 nanowires are densely anchored onto reduced graphene oxide (rGO) nanosheets to form a Li0.04V2O5@rGO nanocomposite by a hydrothermal method with subsequent thermal treatment. Due to this unique structure, the Li0.04V2O5@rGO exhibits remarkable rate performance and excellent cycling stability. Specifically, it delivers a reversible discharge capacity of 738...
March 2, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28323408/monodispersed-carbon-coated-cubic-nip2-nanoparticles-anchored-on-carbon-nanotubes-as-ultra-long-life-anodes-for-reversible-lithium-storage
#15
Peili Lou, Zhonghui Cui, Zhiqing Jia, Jiyang Sun, Yingbin Tan, Xiangxin Guo
In search of new electrode materials for lithium-ion batteries (LIB), metal phosphides that exhibit desirable properties such as high theoretical capacity, moderate discharge plateau and relative low polarization recently attract a great deal of attention as anode materials. However, the large volume changes and thus resulted collapse of electrode structure during long-term cycling are still the challenges for metal phosphide-based anodes. Here we report an electrode design strategy to solve these problems...
March 21, 2017: ACS Nano
https://www.readbyqxmd.com/read/28323407/tunneled-mesoporous-carbon-nanofibers-with-embedded-zno-nanoparticles-for-ultrafast-lithium-storage
#16
Geon-Hyoung An, Do-Young Lee, Hyo-Jin Ahn
Carbon and metal oxide composites have received considerable attention as anode materials for Li-ion batteries (LIBs) owing to their excellent cycling stability and high specific capacity based on the chemical and physical stability of carbon and the high theoretical specific capacity of metal oxides. However, efforts to obtain ultrafast cycling stability in carbon and metal oxide composites at high current density for practical applications still face important challenges because of the longer Li-ion diffusion pathway, which leads to poor ultrafast performance during cycling...
March 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28322545/surface-modification-of-the-lifepo4-cathode-for-the-aqueous-rechargeable-lithium-ion-battery
#17
Artur Tron, Yong Nam Jo, Si Hyoung Oh, Yeong Don Park, Junyoung Mun
The LiFePO4 surface is coated with AlF3 via a simple chemical precipitation for aqueous rechargeable lithium ion batteries (ARLBs). During electrochemical cycling, the unfavorable side reactions between LiFePO4 and the aqueous electrolyte (1 M Li2SO4 in water) leave a highly resistant passivation film, which causes a deterioration in the electrochemical performance. The coated LiFePO4 by 1 wt.% AlF3 has a high discharge capacity of 132 mAh g-1 and a highly-improved cycle life, which shows 93% capacity retention even after 100 cycles, whereas the pristine LiFePO4 has a specific capacity of 123 mAh g-1 and a poor capacity retention of 82%...
March 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28322499/formation-of-a-surficial-bifunctional-nanolayer-on-nb2-o5-for-ultrastable-electrodes-for-lithium-ion-battery
#18
Jun Young Cheong, Chanhoon Kim, Ji-Won Jung, Ki Ro Yoon, Su-Ho Cho, Doo-Young Youn, Hye-Yeon Jang, Il-Doo Kim
Safe and long cycle life electrode materials for lithium-ion batteries are significantly important to meet the increasing demands of rechargeable batteries. Niobium pentoxide (Nb2 O5 ) is one of the highly promising candidates for stable electrodes due to its safety and minimal volume expansion. Nevertheless, pulverization and low conductivity of Nb2 O5 have remained as inherent challenges for its practical use as viable electrodes. A highly facile method is proposed to improve the overall cycle retention of Nb2 O5 microparticles by ammonia (NH3 ) gas-driven nitridation...
March 21, 2017: Small
https://www.readbyqxmd.com/read/28322399/lithium-ion-storage-properties-of-a-micro-nanosheet-like-nav6o15-anode-in-aqueous-solution
#19
Mingshu Zhao, Weigang Zhang, Xiaoping Song
The micromorphologies of NaV6O15 materials synthesized using the hydrothermal method and calcination comprise staggered micro/nanosheet-like shapes. These materials can act as anode active materials in aqueous rechargeable lithium-ion batteries (ARLBs). NaV6O15 has a charge transfer resistance of several ohms in the ARLB, which is an order of magnitude smaller than in traditional lithium-ion batteries. The lithium-ion diffusion coefficients at 0.15, -0.21 and -0.65 V vs. saturated calomel electrode (SCE) were calculated as 7...
March 21, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28322285/silicon-and-carbon-nanocomposite-spheres-with-enhanced-electrochemical-performance-for-full-cell-lithium-ion-batteries
#20
Wei Wang, Zachary Favors, Changling Li, Chueh Liu, Rachel Ye, Chengyin Fu, Krassimir Bozhilov, Juchen Guo, Mihrimah Ozkan, Cengiz S Ozkan
Herein, facile synthesis of monodisperse silicon and carbon nanocomposite spheres (MSNSs) is achieved via a simple and scalable surface-protected magnesiothermic reduction with subsequent chemical vapor deposition (CVD) process. Li-ion batteries (LIBs) were fabricated to test the utility of MSNSs as an anode material. LIB anodes based on MSNSs demonstrate a high reversible capacity of 3207 mAh g(-1), superior rate performance, and excellent cycling stability. Furthermore, the performance of full cell LIBs was evaluated by using MSNS anode and a LiCoO2 cathode with practical electrode loadings...
March 21, 2017: Scientific Reports
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