Monodisperse mesoporous Li9V3(P2O7)3(PO4)2 microspheres prepared via a hydrothermal method as cathode material for lithium-ion batteries

被引：8
作者：
Gu, G. F. [1 ,2 ]
Tang, D. M. [1 ,2 ]
Wu, P. [1 ,2 ]
Tian, H. Y. [1 ,2 ]
Tong, D. G. [1 ,2 ]
机构：
[1] Sichuan Higher Educ Inst, Mineral Resources Chem Key Lab, Chengdu 610059, Peoples R China
[2] Chengdu Univ Technol, Coll Mat & Chem & Chem Engn, Inst Green Catalysis & Synth, Chengdu 610059, Peoples R China
来源：
MATERIALS LETTERS | 2013年 / 92卷
关键词：
Composite materials; Microstructure; Hydrothermal method; Li9V3(P2O7)(3)(PO4)(2); Cathode; SOLUTION PLASMA PROCESS; ELECTROCHEMICAL PROPERTIES;
D O I：
10.1016/j.matlet.2012.10.115
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A hydrothermal approach was developed to synthesize monodisperse Li9V3(P2O7)(3)(PO4)(2) microspheres consisting of nanoplates arranged in an open three-dimensional mesoporous structure. Conductive polyaniline (PANI) was deposited onto the Li9V3(P2O7)(3)(PO4)(2) microspheres to increase their rate capability. The samples were investigated using X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, N-2 adsorption-desorption, tap density, Fourier transform infrared spectroscopy, and electrochemical methods. The Li9V3(P2O7)(3)(PO4)(2)/PANI microspheres were found to have excellent rate capability and cycle stability, exhibiting a discharge capacity of 139 mAh g(-1) at 0.1 C, which remained approximately 110 mAh g(-1) at 5C and 94 mAh g(-1) at 10 C for a total of 500 cycles at 2.5-4.6 V. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：247 / 251
页数：5
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