xLi3V2(PO4)3·LiVPO4F/C composite cathode materials for lithium ion batteries
作者： Jiexi Wang , Zhixing Wang , Xinhai Li , Huajun Guo , Xianwen Wu
DOI: 10.1016/J.ELECTACTA.2012.09.014
关键词:
摘要: Abstract xLi3V2(PO4)3·LiVPO4F/C composite is synthesized by mechanically activated chemical reduction. The value of x designed to be 2.0 but in fact 2.7 the prepared sample because volatilization HF or VF3. as-prepared powders with average primary size 0.5–1 μm are coated amorphous carbon layer. Structural analysis indicates that two phases monoclinic Li3V2(PO4)3 and triclinic LiVPO4F coexist. as cathode for LIB shows excellent electrochemical performances. In potential range 3.0–4.4 V, it delivers initial discharge capacity 139, 137, 131, 123 mAh g−1 at 0.1, 1, 5 10 C, respectively. And 97.4% retained even after 300 cycles C. cyclic voltammetry (CV) AC impedance indicate separately good ionic diffusivity low resistance.
sci-hub.se 参考文章(35)
Lina Wang, Zhengchun Li, Hongjie Xu, Keli Zhang, Studies of Li3V2(PO4)3 Additives for the LiFePO4-Based Li Ion Batteries Journal of Physical Chemistry C. ,vol. 112, pp. 308- 312 ,(2008) , 10.1021/JP0758014
G. G. Amatucci, N. Pereira, T. Zheng, J.-M. Tarascon, Failure mechanism and improvement of the elevated temperature cycling of LiMn2O4 compounds through the use of the LiAlxMn2-xO4-zFz solid solution Journal of The Electrochemical Society. ,vol. 148, ,(2001) , 10.1149/1.1342168
G.-H. Kim, J.-H. Kim, S.-T. Myung, C. S. Yoon, Y.-K. Sun, Improvement of High-Voltage Cycling Behavior of Surface-Modified Li [ Ni1 ∕ 3Co1 ∕ 3Mn1 ∕ 3 ] O2 Cathodes by Fluorine Substitution for Li-Ion Batteries Journal of The Electrochemical Society. ,vol. 152, ,(2005) , 10.1149/1.1952747
Jun-chao Zheng, Xin-hai Li, Zhi-xing Wang, Jin-hui Li, Ling-jun Li, Ling Wu, Hua-jun Guo, Characteristics of xLiFePO4·y Li3V2(PO4)3 electrodes for lithium batteries Ionics. ,vol. 15, pp. 753- 759 ,(2009) , 10.1007/S11581-009-0374-9
Yuzhan Li, Zhen Zhou, Manman Ren, Xueping Gao, Jie Yan, Electrochemical performance of nanocrystalline Li3V2(PO4)3/carbon composite material synthesized by a novel sol–gel method Electrochimica Acta. ,vol. 51, pp. 6498- 6502 ,(2006) , 10.1016/J.ELECTACTA.2006.04.036
J. Barker, M. Y. Saidi, J. L. Swoyer, Electrochemical Insertion Properties of the Novel Lithium Vanadium Fluorophosphate, LiVPO4 F Journal of The Electrochemical Society. ,vol. 150, ,(2003) , 10.1149/1.1609998
Tao Jiang, Wencheng Pan, Jian Wang, Xiaofei Bie, Fei Du, Yingjin Wei, Chunzhong Wang, Gang Chen, Carbon coated Li3V2(PO4)3 cathode material prepared by a PVA assisted sol–gel method Electrochimica Acta. ,vol. 55, pp. 3864- 3869 ,(2010) , 10.1016/J.ELECTACTA.2010.02.026
Jiexi Wang, Zhixing Wang, Xinhai Li, Huajun Guo, Wei Xiao, Silin Huang, Zhenjiang He, Comparative investigations of LiVPO4F/C and Li3V2(PO4)3/C synthesized in similar soft chemical route Journal of Solid State Electrochemistry. ,vol. 17, pp. 1- 8 ,(2013) , 10.1007/S10008-012-1846-9
Shih-Chieh Yin, Hiltrud Grondey, Pierre Strobel, Huan Huang, Linda F. Nazar, Charge ordering in lithium vanadium phosphates: electrode materials for lithium-ion batteries. Journal of the American Chemical Society. ,vol. 125, pp. 326- 327 ,(2003) , 10.1021/JA028973H
Y.Q. Qiao, J.P. Tu, Y.J. Mai, L.J. Cheng, X.L. Wang, C.D. Gu, Enhanced electrochemical performances of multi-walled carbon nanotubes modified Li3V2(PO4)3/C cathode material for lithium-ion batteries Journal of Alloys and Compounds. ,vol. 509, pp. 7181- 7185 ,(2011) , 10.1016/J.JALLCOM.2011.04.048