The Effects of Surface Modifications on the Electrochemical Properties of LiMn2−xNixO4 (0 ≤ x ≤ 0.5) as Cathode Materials for Secondary Lithium Batteries

Bulletin of the Korean Chemical Society

Yeon Uk Jeong¹  Neung Kwon²  SangIl Choi³ 

[1] Department of Chemistry Kyungpook National University Daegu 41566 South Korea;School of Materials Science and Engineering Kyungpook National University Daegu 41566 South Korea;School of Mechanical Engineering Kyungpook National University Daegu 41566 South Korea

关键词: Secondary lithium batteries;    Cathode materials;    Surface modifications;   

DOI  :  10.1002/bkcs.11531

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

In an attempt to achieve a higher energy density of secondary lithium batteries, cathode materials with higher potentials are investigated. LiMn2−xNixO4 samples are synthesized by a solid‐state reaction in a controlled atmosphere. While the energy density and cycle life have improved with higher Ni contents in the phase, the electrical conductivity has decreased. In order to improve the rate capability of cells, surface modifications of the cathode material are carried out by a wet chemical method. Surface modified samples show improved rate capability and cyclability compared to the unmodified samples.

【 授权许可】

Unknown