Investigation of various synthetic conditions for large-scale synthesis and electrochemical properties of Li3.98Al0.06Ti4.96O12/C as anode material

被引:8
作者
Dong, Guo-Hui [1 ,2 ]
Liu, Hua-Jing [1 ,3 ]
Zhou, Liang [1 ,3 ]
Chong, Lina [2 ]
Yang, Jun [2 ]
Qiao, Yong-Min [1 ]
Zhang, Dian-Hao [1 ]
机构
[1] Shanghai Shanshan Tech Co Ltd, Shanghai 201209, Peoples R China
[2] Shanghai Jiao Tong Univ, Shanghai 200240, Peoples R China
[3] Shanghai Second Polytech Univ, Shanghai 201209, Peoples R China
基金
中国博士后科学基金;
关键词
Lithium titanate; Lithium ion batteries; Electrode materials; Chemical synthesis; Nanostructured materials; LITHIUM-ION BATTERIES; HIGH-RATE PERFORMANCE; NANOCRYSTALLINE LI4TI5O12; AG NANOPARTICLES; RATE CAPABILITY; CARBON; ELECTRODE; CELLS; LI1.33TI1.67O4; NANOCOMPOSITE;
D O I
10.1016/j.jallcom.2014.07.043
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
Poor electronic conductivity is one of the biggest obstacles for practical application of lithium titanate as lithium-ion battery anode material. Utilizing the advantages of coating and doping techniques to optimize the conductive and rate performances of lithium titanate was reported in this work. Herein, the effects of various synthetic conditions including calcination temperatures and holding times, lithium overdoses, carbon contents, doping contents and doping elements on phase, primary particles' size and electrochemical performance were comprehensively investigated. The optimal Li3.98Al0.06Ti4.96O12/C secondary microspheres were synthesized, which possessed high electronic conductivity, tap density, reversible capacity and first columbic efficiency, and excellent rate performances. Furthermore, the synthesized samples were characterized by various techniques. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:817 / 824
页数:8
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