Complex spinel titanate as an advanced anode material for rechargeable lithium-ion batteries

被引：33
|
作者：
Chen, Wei [1 ]
Liang, Hanfeng [1 ]
Ren, Weijian [3 ]
Shao, Lianyi [2 ]
Shu, Jie [2 ]
Wang, Zhoucheng [1 ]
机构：
[1] Xiamen Univ, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China
[2] Ningbo Univ, Fac Mat Sci & Chem Engn, Ningbo 315211, Zhejiang, Peoples R China
[3] Xiamen Univ, Coll Mat, Xiamen 361005, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 611卷
基金：
中国国家自然科学基金;
关键词：
Lithium-ion batteries; Anode material; Complex spinel titanate; Doping; Solid-state reaction; MG; TI;
D O I：
10.1016/j.jallcom.2014.05.125
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：
In this work, complex spinel titanates Li2MTi3O8 (M = Zn, Cu, Zn0.5Cu0.5) have been synthesized by a simple solid state reaction route. Their crystal structures are described and verified by Rietveld refinement. Electrochemical results exhibit that Li2CuTi3O8 has a highest lithium storage capacity of 242 mA h g (1) and Li2ZnTi3O8 displays the lowest initial charge capacity of 190 mA h g (1) among all the three samples. However, both Li2CuTi3O8 and Li2ZnTi3O8 show poor capacity retention and low reversible capacity after 50 cycles. Li2Zn0.5Cu0.5Ti3O8 shows higher structural and cycling stability than that of Li2ZnTi3O8 and Li2CuTi3O8. As a result, Li2Zn0.5Cu0.5Ti3O8 can deliver a reversible capacity of 162 mA h g (1) after 50 cycles with capacity retention of 74%. (C) 2014 Elsevier B. V. All rights reserved.
引用
收藏
页码：65 / 73
页数：9
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