Preparation of LiNi0.5Mn1.5O4 as 5 V Cathode Materials for Lithium Ion Battery and Diffusion Performance of Li+ in the Materials

被引：0

作者：

Lu Hua-Quan ^{[1
]}

Wu Feng ^{[1
]}

Su Yue-Feng ^{[1
]}

Li Ning ^{[1
]}

Chen Shi ^{[1
]}

Bao Li-Ying ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Chem Engn & Environm, Natl Dev Ctr Hitech Green Mat, Beijing 100081, Peoples R China

来源：

CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE | 2011年 / 32卷 / 04期

关键词：

Lithium-ion battery; Cathode material; Oxalate co-precipitation; LiNi0.5Mn1.5O4; Diffusion coefficient; NANO-CRYSTALLINE LINI0.5MN1.5O4; ELECTROCHEMICAL PERFORMANCE; COPRECIPITATION METHOD; COEFFICIENT; LIFEPO4;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

5 V cathode material LiNi0.5M1.5O4 was synthesized via an oxalate co-precipitation method, and the relationship between the structure, morphology and the electrochemical performance of the material was investigated. The results show that the sample synthesized at 900 degrees C has the best electrochemical performance. Its initial discharge capacity reaches 133.0 mA.h/g, and after cycled for 30 times, still maintains at 132.2 mA.h/g (capacity retention 99. 4%). The chemical diffusion coefficient of Li+ ion in LiNi0.5M1.5O4 cathode material was measured by potentiostatic intermittent titration technique (PITT) and electrochemical impedance spectroscopy(EIS). The chemical diffusion coefficient of Li+ ion ranges in 10(-10)-10(-11) cm(2)/s.

引用

页码：946 / 951

页数：6

共 18 条

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