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Title:
NATURAL GRAPHITE-BASED MODIFIED COMPOSITE MATERIAL, PREPARATION METHOD THEREFOR, AND LITHIUM ION BATTERY COMPRISING MODIFIED COMPOSITE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2019/114554
Kind Code:
A1
Abstract:
A natural graphite-based modified composite material, a preparation method therefor, and a lithium ion battery comprising the modified composite material. The natural graphite-based modified composite material comprises natural graphite and non-graphitized carbon coated on the inner and outer surfaces of the natural graphite. The preparation method comprises: (1) subjecting spherical natural graphite to isotropic treatment; (2) performing granularity control and shaping treatment; (3) subjecting the inner surface and the outer surface of the material obtained in step (2) to simultaneous modification; and (4) performing carbonization, so as to obtain a natural graphite-based modified composite material.

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Inventors:
LIU XINGYANG (CN)
ZHOU HAIHUI (CN)
LI DONGDONG (CN)
ZHOU CHENGKUN (CN)
REN JIANGUO (CN)
HUANG YOUYUAN (CN)
YUE MIN (CN)
Application Number:
PCT/CN2018/118100
Publication Date:
June 20, 2019
Filing Date:
November 29, 2018
Export Citation:
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Assignee:
SHENZHEN BTR NEW ENERGY MAT INC (CN)
International Classes:
H01M4/36; H01M4/583; H01M10/0525
Foreign References:
CN108063229A2018-05-22
CN103682258A2014-03-26
CN106169584A2016-11-30
CN101209837A2008-07-02
CN102280629A2011-12-14
US20020197534A12002-12-26
CN101685858A2010-03-31
CN103477476A2013-12-25
Other References:
See also references of EP 3726629A4
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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