Simple, rapid and accurate determination of lattice composition and evaluation of electrochemical properties of LixNi2-xO2 electrode material for lithium ion battery by a novel method

被引：23

作者：

Wang, CW ^{[1
]}

Ma, XL ^{[1
]}

Zicheng, LC ^{[1
]}

Liang, YG ^{[1
]}

Sun, JT ^{[1
]}

Zhou, YH ^{[1
]}

机构：

[1] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2006年 / 8卷 / 02期

基金：

中国国家自然科学基金;

关键词：

lithium ion battery; lithium nickel composite oxide; X-ray diffraction; linear relationship; lattice composition;

D O I：

10.1016/j.elecom.2005.11.024

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A series of lithium nickel composite oxides LixNi2-xO2 (0 <= x <= 1) were synthesized and characterized by X-ray diffraction (XRD) measurement. As lithium content increases, the cell parameters decrease. It is found that the cell volume (V) and lithium content (x) have a good linear relationship which corresponds to a linear equation, V = 109.0366 - 7.6572x (R = -0.9999). The credibility of the linear relationship was confirmed by inductively coupled plasma atomic emission spectrometry (ICP-AES) analysis. The electrochemical properties of LixNi2-xO2 (0.9 <= x <= 1) whose composition determined by the linear relationship were discussed. The oxide exhibits better electrochemical properties with x closing to 1. The linear relationship can be applied to determine the lattice composition and evaluate the electrochemical properties of LixNi2-xO2 electrode materials for lithium ion battery. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：289 / 292

页数：4