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1. (WO2018120147) METHOD FOR PREPARING GRAPHENE/TERNARY MATERIAL COMPOSITE FOR USE IN LITHIUM ION BATTERIES AND PRODUCT THEREOF

Pub. No.:    WO/2018/120147    International Application No.:    PCT/CN2016/113790
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Sat Dec 31 00:59:59 CET 2016
IPC: H01M 4/525
Applicants: BEIJING TUNGHSU CARBON ADVANCED MATERIALS TECHNOLOGY CO., LTD.
北京旭碳新材料科技有限公司
TUNGHSU GROUP CO., LTD.
东旭集团有限公司
Inventors: LI, Qing
李青
CHEN, Min
陈敏
LI, Heran
李赫然
WANG, Zhonghui
王忠辉
Title: METHOD FOR PREPARING GRAPHENE/TERNARY MATERIAL COMPOSITE FOR USE IN LITHIUM ION BATTERIES AND PRODUCT THEREOF
Abstract:
Provided is a method for preparing a graphene/ternary material composite for use in lithium ion batteries, comprising the following preparation steps: (a) mixing a ternary material and a graphene oxide powder in an organic solvent to form a mixed dispersion; (b) adding a reducing agent to the mixed dispersion in step (a), and carrying out a reduction reaction at a reduction temperature of 80°C to 160°C while stirring the mixed dispersion, to obtain a reduction reaction mixture after a reduction time of 60 min to 240 min; and (c) evaporating a solvent in the reduction reaction mixture in step (b) while stirring the reduction reaction mixture, and drying a product and then annealing the product at a low temperature in an inert atmosphere to obtain a graphene/ternary material composite having a three-dimensional network structure. Also provided is a graphene/ternary material composite prepared by using this method.