LiMn2O4 cathode materials synthesized by the cellulose-citric acid method for lithium ion batteries

Authors

Peizhi Shen, Institute of Applied Chemistry, ChinaFollow
D Z. Jia, Institute of Applied Chemistry, China
Y Huang, Institute of Applied Chemistry, China
Lang Liu, Institute of Applied Chemistry, ChinaFollow
Zaiping Guo, University of WollongongFollow

RIS ID

17964

Publication Details

Shen, P, Jia, DZ, Huang, Y, Liu, L & Guo, Z (2006), LiMn2O4 cathode materials synthesized by the cellulose-citric acid method for lithium ion batteries, Journal of Power Sources, 158(1), pp. 608-613.

Abstract

A new technique was employed to synthesize spinel LiMn₂O₄ cathode materials by adding cellulose and citric acid to an aqueous solution of lithium and manganese salts. Various synthesis conditions such as the calcination temperature and the citric acid-to-metal ion molar ratio (R) were investigated to determine the ideal conditions for preparing LiMn₂O₄ with the best electrochemical characteristics. The optimal synthesis conditions were found to be R = 1/3 and a calcination temperature of 800 °C. The initial discharge capacity of the material synthesized using the optimal conditions was 134 mAh g⁻¹, and the discharge capacity after 40 cycles was 125 mAh g⁻¹, at a current density of 0.15 mA cm⁻² between 3.0 and 4.35 V. Details of how the initial synthesis conditions affected the capacity and cycling performance of LiMn₂O₄ are discussed.