公开(公告)号：KR100749773B1

公开(公告)日：2007-08-09

申请号：KR20060040321

申请日：2006-05-04

Applicant: KOREA ELECTRONICS TECHNOLOGY

Inventor： PARK CHUL WAN

IPC: H01M4/583 ,  B82Y30/00 ,  H01M4/04 ,  H01M10/0525

CPC classification number: H01M4/587 ,  C01B32/162 ,  C01P2002/72 ,  C01P2004/54 ,  C01P2006/12 ,  C01P2006/40 ,  H01M10/0525 ,  Y02E60/122

Abstract: Provided are a negative electrode active material for a lithium secondary battery which is increased in the capacity per volume, a method for preparing the negative electrode active material, and a lithium secondary battery using the negative electrode active material. A negative electrode active material comprises a plurality of carbon nanotubes which exists in a form of a particle by chemical bonding, and has a pore which is formed uniformly inside the particle. Preferably the particle has a diameter of 10-50 micrometers and an aspect ratio of 0.5-1, has a form of potato, sphere or bead and has a specific surface area of 10 m^2/g or less. Preferably the carbon nanotube has a d200 of 0 nm to 0.34 nm.

Abstract translation: 提供一种锂二次电池的负极活性物质，其容量增加，负极活性物质的制备方法和使用该负极活性物质的锂二次电池。 负极活性物质包含通过化学键合以颗粒形式存在的多个碳纳米管，并且具有在颗粒内部均匀形成的孔。 优选地，颗粒具有10-50微米的直径和0.5-1的纵横比，具有马铃薯，球形或珠粒的形式，并且具有10m 2 / g或更小的比表面积。 优选地，碳纳米管具有0nm至0.34nm的d200。