Synthesis and properties of high tap-density cathode material for lithium ion battery by the eutectic molten-salt method

被引：19
|
作者：
Chang, Zhaorong [1 ]
Chen, Zhongjun [1 ]
Wu, Feng [2 ]
Tang, Hongwei [1 ]
Zhu, Zhihong [1 ]
Yuan, Xiao Zi [3 ]
Wang, Haijiang [3 ]
机构：
[1] Henan Normal Univ, Coll Chem & Environm Sci, Xinxiang 453007, Peoples R China
[2] Beijing Inst Technol, Coll Chem Engn & Environm, Beijing 100080, Peoples R China
[3] Natl Res Council Canada, Inst Fuel Cell Innovat, Vancouver, BC V6T 1W5, Canada
来源：
SOLID STATE IONICS | 2008年 / 179卷 / 39期
关键词：
Li(Ni1/3CO1/3Mn1/3)O-2; Eutectic molten Salt; Cathode material;
D O I：
10.1016/j.ssi.2008.08.011
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：
Spherical Li(Ni1/3CO1/3Mn1/3)O-2 with a layered structure has been successfully prepared by the eutectic molten-salt method using 0.24LiCO(3)-0.76LiOH (with a melting point of 423 degrees C) and (Ni1/3Co1/3Mn1/3)(OH)(2), where the ratio of Li/(Ni+Co+Mn) is controlled at 1:1. The tap-density of the powders obtained in this work (2.89) is remarkably higher than that of spherical Li(Ni1/3Co1/3Mn1/3)O-2 powders synthesized by other single lithium salts (2.40). XRD analysis shows that this material has a well-developed layered structure. Charge-discharge tests have shown that a Li(Ni1/3Co1/3Mn1/3)O-2 cathode prepared at 950 degrees C has an initial discharge capacity as high as 166. After 50 cycles, the cell showed little capacity loss, which indicated the excellent cyclic performance of the synthesized materials. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：2274 / 2277
页数：4
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