Title:
リチウムイオン二次電池負極材用炭素質被覆黒鉛粒子、リチウムイオン二次電池負極およびリチウムイオン二次電池
Document Type and Number:
Japanese Patent JP6476431
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a negative electrode material having excellent battery characteristics and capable of obtaining excellent electrode peel strength, when being used for a negative electrode material for a lithium ion secondary battery.SOLUTION: A method for producing carbonaceous-coated graphite particles for a lithium ion secondary battery negative electrode material includes: a pressurization step of anisotropically pressurizing spherical and/or ellipsoid graphite to obtain a graphite core material; and a mixing and firing step of mixing and firing a graphite core material obtained through the pressurization step and a carbonaceous precursor so that a carbonaceous material is coated on at least a part of the surface of the graphite core material.
Inventors:
Yasushi
Katsuhiro Nagayama
Katsuhiro Nagayama
Application Number:
JP2014246096A
Publication Date:
March 06, 2019
Filing Date:
December 04, 2014
Export Citation:
Assignee:
JFE Chemical Co., Ltd.
International Classes:
H01M4/587; C01B32/21; H01M4/36; H01M10/0525; H01M10/0569
Domestic Patent References:
| JP2013201104A |
Foreign References:
| WO2011052452A1 |
Attorney, Agent or Firm:
Nozomi Watanabe
Haruko Sanwa
Haruko Sanwa