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, and the maximum relevant error goes down evidently by amelioration. Key words: Levenberg-Marquardt BP neural network; Li-ion battery; formation system ...:TM 910.6 文献标志码:A 文章编号:1672-7207(2010)01-0055-05 Improvement of sampling precision in Li-ion......
酚醛树脂炭包覆天然微晶石墨作锂离子电池负极材料 李富进1,徐乐1,刘洪波1,何月德2 (1.长沙理工大学物理与电子科学学院,湖南,长沙,410014;2.湖南大学材料科学与工程学院,湖南,长沙,410082) 摘要:通过酚醛树脂包覆天然微晶石墨和炭化处理制备具有核壳结构的酚醛树脂炭包覆天然石墨负极材料,考察了酚醛树脂包覆量对酚醛树脂炭包覆天然石墨负极材料结构和性能的影响.结果表明,表面树脂炭的存在使石墨表面更光滑,但不会改变其片层状晶体结构.酚醛树脂炭包覆石墨的比表面积随酚醛树脂包覆量的增加而增大.包覆适当厚度的酚醛树脂炭可明显改善天然微晶石墨的首次充放电性能和循环性能,酚醛树脂包覆量为3%的酚醛树脂炭包覆石墨的首次可逆容量为334.3mAh/g,首次充放电效率为84.8%. 关键词:锂离子电池; 负极材料; 天然微晶石墨; 酚醛树脂; 电化学性能; Li-ion battery......
藤形的炭纳米纤维对倍率性能的提高最为有效.提出采用炭纳米纤维-天然石墨复合材料的原理结构模型解释重复充放电过程中电极的体积稳定性.通过在石墨表面上生长类常青藤形炭纳米纤维而使得SEI(固体电解质界面)变薄并减少了充放电过程中阳极的体积变化,因而提高了倍率性能. 关键词:天然石墨; 锂离子电池; 炭纳米纤维; 倍率性能; 体积稳定性; Natural graphite; Li-ion battery; Carbon nanofiber; Rate capability; Volumetric stability; [全文内容正在添加中] ......
Separator Material Chosen for MH/Ni Battery Liu Dong1,Ma Yijun1,Jia Chunming1,Liang Wanlong1,Xu Shaoping1 (1.Inner Mongolia Rare Earth Ovonic High-Power MH/Ni Battery Co. Ltd.,Baotou 014030, China) Abstract:The properties of MH/Ni batteries using different separator were studied.And then an idea for choosing separator for high-power MH/Ni battery was provided.Using the separator with grafting......
material for lithium ion battery was synthesized by microwave heating with Co3O4 and LiOH·H2O as starting materials. The selection of output power and heating time of microwave can markedly affect the purity...; cathode materials; lithium ion battery CLC number: TM910.1 Document code: A 1 INTRODUCTION LiCoO2 is a commercially......
, SEKINE K, TAKAMURA T. Thick vacuum deposited silicon films suitable for the anode of Li-ion battery [J]. J Power Sources, 2005, 146: 441-444. [7] KIM I S, KUMTA P N, BLOMGREN G S. Si/TiN nanocompositesnovel anode materials for Li-ion batteries [J]. Electrochem Solid-State Lett, 2000, 3: 493-496. [8] KIM B C, UONO H, SATO T, FUSE T, ISHIHARA T, SENNA M. Li-ion battery anode properties of Si-carbon......
J. Cent. South Univ. (2016) 23: 2595-2603 DOI: 10.1007/s11771-016-3321-8 Hover performance estimation and validation of battery powered vertical takeoff and landing aircraft WANG Bo(王波)1, 2, HOU..., China Central South University Press and Springer-Verlag Berlin Heidelberg 2016 Abstract: Battery powered vertical takeoff and landing (VTOL) aircraft attracts more and more interests from public, while......
-an, LAI Yan-qing. LiODFB-TEABF4 composite electrolyte for Li-ion battery and double-layer capacitor [J]. J Cent South Univ, 2010, 41(6): 2080-2085. (in Chinese) [14] ZHU Wei xiong, LI Xin hai, WANG Zhi xing... of electrolyte are able to undertake 5C discharging current with above 93% capacity retention at -20 °C. Electrochemical impedance spectra show that the discharge capacity fading of Li-ion cells at low......
% of that at 0.1C. The capacity keeps 91.6% even after 50 cycles at 1C. Compared to natural spherical graphite, it has a larger lithium ion diffusion coefficient. Key words: Li-ion battery; pitch; composite... material for Li-ion battery[J]. Carbon, 2006, 128(4): 8-11. [10] 周友元, 李新海, 郭华军, 等. 中间相炭-天然石墨球复合材料的制备及电化学性能[J]. 中南大学学报(自然科学版), 2007, 38(4): 652-655. ZHOU Youyuan, LI Xinhai, GUO Huajun, et al......
nanoflakes with good cycling stability as a cathode for sodium ion battery [J]. Journal of The Electrochemical Society, 2015, 162(1): A39-A43. [24] JIANG Dan-lu, WANG Hui, LI Guo-peng, LI Guang-qiang, LAN Xin... areas which can provide additional ion storage sites and improve the electronic and ionic conductivities. Key words: V2O5/NaV6O15; nanocomposite; cathode material; sodium-ion battery 1 Introduction......
