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1. (WO2017186079) SUPERCAPACITY LITHIUM ION BATTERY ANODE MATERIAL, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF

Pub. No.:    WO/2017/186079    International Application No.:    PCT/CN2017/081647
Publication Date: Fri Nov 03 00:59:59 CET 2017 International Filing Date: Tue Apr 25 01:59:59 CEST 2017
IPC: H01M 4/36
Applicants: PEKING UNIVERSITY SHENZHEN GRADUATE SCHOOL
北京大学深圳研究生院
Inventors: PAN, Feng
潘锋
DUAN, Yandong
段彦栋
ZHANG, Bingkai
张丙凯
ZHENG, Jiaxin
郑家新
HU, Jiangtao
胡江涛
LIU, Tongchao
刘同超
GUO, Hua
郭华
LIN, Yuan
林原
LI, Wen
李文
SONG, Xiaohe
宋孝河
ZHUO, Zengqing
卓增庆
LIU, Yidong
刘屹东
Title: SUPERCAPACITY LITHIUM ION BATTERY ANODE MATERIAL, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
Abstract:
A supercapacity lithium ion battery anode material, a preparation method therefor and an application thereof. The supercapacity lithium ion battery anode material consists of a transition metal-containing lithium ion anode material and carbon which is coated on the surface of the lithium ion anode material. The transition metal on the surface of the lithium ion anode material is coordinated with carbon by means of X-C bonds to form transition metal-X-C chemical bonds, such that carbon stably coats the surface of the anode material, wherein C is SP3 hybridization and/or SP2 hybridization, and X is at least one selected from among N, O and S. The supercapacity lithium ion battery anode material connects the lithium ion anode material and the carbon by means of the transition metal-X-C chemical bonds, and utilizes the transition metal-X-C chemical bonds to repair boundary of lattices on the surface of the anode material, such that an interface between the lithium ion anode material and a carbon layer can be optimized, to form an interface that can store Li, thereby increasing the per gram capacity of the anode material, and laying the foundation for preparing a supercapacity lithium ion battery.