期刊
NANO ENERGY
卷 12, 期 -, 页码 437-446出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2015.01.003
关键词
Transition metal oxide; Nanornatenal; Tubular structure; Anode; Lithium ion battery
类别
资金
- National Basic Research Program of China (973 Program) [2014CB643406]
- City University of Hong Kong [9667100]
- Fundamental Research Funds for the Central Universities of Central South University [2014zzts026]
- Principal Scholarship for Top Creative PhD Candidates
In order to realize new high performance electrodes for lithium-ion batteries (LIBs), the careful design of nanoarchitectures and effective hybridization of active materials are research areas of great interest. Here, we present a simple and highly controllable two-step fabrication technique, followed by a heat treatment process, for the large-scale in situ growth of 3D hierarchical tubular CuO/other metal oxides core/shell heterostructure arrays that are directly grown on Cu foam. As a proof-of-concept demonstration of the application of such 3D hierarchical tubular heterostructure arrays, the prepared tubular CuO/CoO core/shell arrays are investigated as binder- and conductive agent-free anodes for LIBs, exhibiting an impressive capacity of 1364 mAh g(-1) at a current density of 100 mA g(-1) after 50 cycles and maintaining 1140 mAh g after 1000 cycles at 1.0 A g(-1). This excellent electrochemical performance can be attributed to the unique hollow porous architecture consisting of 3D hierarchical tubular core/shell architectures, and the effective hybridization of two electrochemically cohesive active materials. Our work shows that this material has great potential for high-energy and high-power energy storage applications. (C) 2015 Elsevier Ltd. All rights reserved.
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