Novel emulsion process for synthesizing submicron lithium nickel oxide powder used in lithium ion batteries

被引：5

作者：

Lu, CH ^{[1
]}

Lee, WC ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Chem Engn, Taipei 10764, Taiwan

来源：

MATERIALS LETTERS | 1999年 / 40卷 / 03期

关键词：

emulsion; synthesis; LiNiO2; microstructure; submicron powder; lithium ion batteries;

D O I：

10.1016/S0167-577X(99)00057-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel water-in-oil emulsion process has been successfully developed to prepare submicron lithium nickel oxide (LiNiO2) powder. The aqueous solution containing lithium and nickel cations was well emulsified in kerosene by adding sorbitan monooleate as surfactant. After calcining the dried precursors at 800 degrees C for 2 h, highly crystalline monophasic LiNiO2 powder with R3m structure was achieved. In comparison with the conventional solid state process, this emulsion process significantly reduced the reaction time for preparing LiNiO2, which is attributed to improved homogeneity of constitute cations and enhanced reactivity in the obtained precursors. The curtailed reaction time in the emulsion process also facilitated the reduction of the particle size of LiNiO2 powder. Fine grains of LiNiO2 powder with a narrow particle size distribution ranging from 0.2 to 0.3 mu m were obtained in this study. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：103 / 108

页数：6

共 12 条

[1] STRUCTURE AND ELECTROCHEMISTRY OF LI1+/-YNIO2 AND A NEW LI2NIO2 PHASE WITH THE NI(OH)2 STRUCTURE [J].