Title:
リチウムイオン二次電池負極用炭素材料およびその製造方法
Document Type and Number:
Japanese Patent JP4554795
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide negative pole carbon material which enabls obtaining a lithium ion secondary battery with high capacity and high efficient charge and discharge, its manufacturing method and the lithium secondary battery. SOLUTION: It is a powder carbon material composed of a mesophase carbon microsphere element and/or the aggregate primarily baked at 350-900 deg.C and heated at high temperature of >=2000 deg.C, and a carbon material for a lithium ion secondary battery negative pole having a surface melting layer formed in the primary baking and heating process at high temperature. The mesophase carbon microsphere separated from pitch matrix is primarily baked at 350-900 deg.C. The carbon material is enabled to manufacture by heating at high temperature of >=2000 deg.C, after removing coarce particle by classifying baked products obtained by the primary baking.
Inventors:
Katsuhiro Nagayama
Makiko Ijiri
Yasuaki Yaginuma
Makiko Ijiri
Yasuaki Yaginuma
Application Number:
JP2000298723A
Publication Date:
September 29, 2010
Filing Date:
September 29, 2000
Export Citation:
Assignee:
JFE Chemical Co., Ltd.
International Classes:
C01B31/02; H01M4/587; C01B31/04; H01M10/05
Domestic Patent References:
| JP11121007A | ||||
| JP7272725A | ||||
| JP10284063A | ||||
| JP200123634A | ||||
| JP200123635A |
Attorney, Agent or Firm:
Nozomi Watanabe
Haruko Sanwa
Haruko Sanwa