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1. (WO2018040143) HIGH-QUALITY, LITHIUM-RICH AND MANGANESE-BASED POSITIVE ELECTRODE MATERIAL FOR LITHIUM ION BATTERY, AND METHOD FOR SYNTHESIZING SAME

Pub. No.:    WO/2018/040143    International Application No.:    PCT/CN2016/099356
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Tue Sep 20 01:59:59 CEST 2016
IPC: H01M 4/505
H01M 4/525
Applicants: SHANDONG YUHUANG NEW ENERGY TECHNOLOGY CO., LTD.
山东玉皇新能源科技有限公司
Inventors: DONG, Xin
董鑫
ZHOU, Juan
周娟
YAN, Liping
鄢丽萍
LIU, Aihua
刘爱花
LI, Yan
李岩
WANG, Ying
王瑛
ZHAO, Chenglong
赵成龙
GAO, Hongsen
高洪森
Title: HIGH-QUALITY, LITHIUM-RICH AND MANGANESE-BASED POSITIVE ELECTRODE MATERIAL FOR LITHIUM ION BATTERY, AND METHOD FOR SYNTHESIZING SAME
Abstract:
Provided are a high-quality, lithium-rich and manganese-based positive electrode material for a lithium ion battery and a method for synthesizing same, which belong to the technical field of lithium ion batteries. The method comprises the following steps: preparing a precursor by complexing an amino acid and a nickel-cobalt-manganese metal, mixing the above-mentioned precursor with a lithium salt, and subjecting same to ball-milling, drying and calcination to obtain a finished product. The amino acid is used as a complexing agent, is environment-friendly and non-toxic, and exhibits extremely small corrosion with regard to operation equipment; the amino acid has a complexing action, slightly stronger than that of ammonia water, on nickel, cobalt and manganese, and the complexing actions on the three metals are similar, this benefitting the coprecipitation of the three transition metals, achieving the uniform distribution of each metal element in a material, improving the comprehensive electrochemical performance of a lithium-rich and manganese-based material, and improving the quality of the material. The lithium-rich and manganese-based material prepared by the method has characteristics such as a high tapped density, a high compaction density, and a better electrochemical performance.