Direct carbon-black coating on LiCoO2 cathode using surfactant for high-density Li-ion cell

被引：71

作者：

Kim, J

Kim, B

Lee, JG

Cho, J ^{[1
]}

Park, B

机构：

[1] Kumoh Natl Inst Technol, Dept Appl Chem, Gumi 730701, South Korea

[2] Seoul Natl Univ, Sch Mat Sci & Engn, Seoul, South Korea

[3] Seoul Natl Univ, Res Ctr Energy Convers & Storage, Seoul, South Korea

来源：

JOURNAL OF POWER SOURCES | 2005年 / 139卷 / 1-2期

关键词：

capacity; carbon-black coating; surfactant; density; lithium-ion battery; lithium cobalt oxide;

D O I：

10.1016/j.jpowsour.2004.07.008

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Direct carbon-black coating of the cathode material using a surfactant increases the capacity of a Li-ion cell by similar to10% compared with using bare LiCoO2. The coating method comprises two steps: (i) dispersion of aggregated carbon black using orotano(R)-a polyacrylate dispersant; (ii) carbon-black coating of the cathode material using a gelatin-an amphoteric surfactant. This technology reduces the carbon content in the electrode without sacrificing the cycle-life performance of the cell, and also improves the rate capability of the Li-ion cell. Moreover, the direct carbon-black-coated cathode exhibits excellent capacity recovery and restricted expansion of the cell thickness compared with a bare cathode during storage at 85 degreesC. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：289 / 294

页数：6