Synthesis and characterization of Zn-doped LiCo0.3Ni0.4(xMn0.3ZnxO2 cathode materials for lithium-ion batteries

被引：24
作者：
Chen Yuhong [1 ]
Chen Ruizhen [1 ]
Tang Zhiyuan [2 ]
Wang Liang [3 ]
机构：
[1] Hebei Chem & Pharmaceut Vocat Technol Coll, Dept Chem & Environm Engn, Shijiazhuang 050026, Peoples R China
[2] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
[3] Lib Hebei Univ Sci & Technol, Shijiazhuang 050018, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 476卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
Lithium-ion batteries; Cathode materials; Zn-doped; Co-precipitation; ELECTRODE MATERIALS; AL; PERFORMANCE;
D O I：
10.1016/j.jallcom.2008.09.055
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：
Zn-doped LiCo0.3Ni0.4-xMn0.3ZnxO2 cathode materials were synthesized via co-precipitation method. The structure, electrochemical performance and thermal stability were characterized by X-ray diffraction (XRD), charge/discharge cycling, cyclic voltammograms (CV), electrochemical impedance spectroscopies (EIS) and differential scanning calorimetry (DSC). LiCo0.3Ni0.4-xMn0.3ZnxO2 had stable layered structure with a-NaFeO2 type with x up to 0.05. The compounds of x = 0.02 showed the best discharge capacity and cycle performance which was related to the most stable structure and Zn-doping prevented structural transformations during the topotactic reactions. Meanwhile, Zn-doping improved the high rate discharge capability and thermal stability. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：539 / 542
页数：4
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