In situ growth of coiled carbon nanotubes on LiFePO4 as high performance lithium storage material

被引：21
|
作者：
Lin, Xiaoting [1 ]
Wu, Kaiqiang [1 ]
Shao, Lianyi [1 ]
Shui, Miao [1 ]
Wang, Dongjie [1 ]
Long, Nengbing [1 ]
Ren, Yuanlong [1 ]
Shu, Jie [1 ]
机构：
[1] Ningbo Univ, Fac Mat Sci & Chem Engn, Ningbo 315211, Zhejiang, Peoples R China
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2014年 / 726卷
基金：
中国国家自然科学基金;
关键词：
In situ CNTs growth; LiFePO4@CNTs; Coiled CNTs; Cathode material; Lithium ion battery; LI-ION BATTERIES; CATHODE MATERIAL; ELECTROCHEMICAL PERFORMANCE; COMPOSITE CATHODE; MORPHOLOGY; MICROSPHERES; ELECTRODES; ROUTE;
D O I：
10.1016/j.jelechem.2014.05.018
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In this paper, LiFePO4@CNTs is fabricated by in situ growth of CNTs on the surface of LiFePO4 particles. The use of Ni-P alloy as catalyst results in the formation of coiled CNTs. The crosslinked CNTs provide good electronic conductive pathways interconnecting LiFePO4 particles. By using as cathode material for lithium ion battery, LiFePO4@CNTs shows higher electronic conductivity and charge transfer rate than those of the pristine LiFePO4 before coating. As a result, LiFePO4@CNTs displays outstanding lithium storage capacity and rate property. Electrochemical results reveal that LiFePO4@CNTs can deliver the reversible capacities of 161.3 mA h g(-1) at 0.2 C and 108.0 mA h g(-1) at 10 C. For comparison, bare LiFePO4 only reveals reversible capacities of 144.1 mA h g(-1) at 0.2 C and 90.9 mA h g(-1) at 10 C. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：71 / 76
页数：6
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