公开(公告)号：US20130295446A1

公开(公告)日：2013-11-07

申请号：US13875654

申请日：2013-05-02

Applicant: SHOWA DENKO K.K.

Inventor： Hirokazu MURATA ,  Nobuaki ISHII ,  Masataka TAKEUCHI ,  Mohit JAIN ,  Nader M. HAGH ,  Farid BADWAY ,  Krista MARTIN

IPC: H01M4/133 ,  H01M10/0569 ,  H01M10/0525 ,  H01M4/64

CPC classification number: H01M4/133 ,  H01B1/122 ,  H01M4/134 ,  H01M4/366 ,  H01M4/38 ,  H01M4/387 ,  H01M4/388 ,  H01M4/621 ,  H01M4/624 ,  H01M4/64 ,  H01M10/0525 ,  H01M10/0569 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011

Abstract: A negative electrode material for a lithium ion battery, in which a fine particle (A) containing an element selected from Si, Sn, Ge and In and a carbon particle (B) obtained by heat-treating a petroleum-based coke and/or a coal-based coke at a temperature of 2,500° C. or more are connected through a chemical bond such as urethane bond, urea bond, siloxane bond and ester bond. Also disclosed are a negative electrode sheet obtained by coating a current collector with a paste containing the negative electrode material, a binder and a solvent, and then drying and pressure-forming the paste; and a lithium ion battery incorporating the negative electrode sheet.

Abstract translation: 一种锂离子电池用负极材料，其中含有选自Si，Sn，Ge和In的元素的细颗粒（A）和通过将石油基焦炭和/或 在2500℃以上的煤基焦炭通过氨基甲酸酯键，脲键，硅氧烷键和酯键等化学键连接。 还公开了通过用含有负极材料，粘合剂和溶剂的糊剂涂布集电体，然后干燥和加压形成糊料而获得的负极片材; 和包含负极片的锂离子电池。