期刊
NANOSCALE
卷 9, 期 2, 页码 823-831出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6nr08765e
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资金
- National Natural Science Foundation of China [21306123, 21576184]
- Program for the Top Young Academic Leaders of Higher Learning Institutions of Shanxi China
- Foundation of the Taiyuan University of Technology for Outstanding Young Teachers [2014YQ019]
- Shanxi Scholarship Council of China [2015-039]
The development of suitable cathode materials for sodium-ion batteries is the key issue to realize their large-scale applications owing to the lack of appropriate materials with adequate electrochemical capacity and reversibility for Na-ion insertion reaction. Here, a string of nickel hexacyanoferrate (NiHCF) nanocubes is coaxially grown on a CNT@bipolar conducting polymer (BCP) by a facile electrochemical route, and used as a high-performance cathode material for sodium-ion batteries. The obtained cathode shows a surprisingly high specific capacity of 194 mA h g(-1) upon the initial discharge, a good cycling performance and excellent rate performance. It is considered that the unique nanostructure not only effectively facilitates the electrode/electrolyte interaction and the electronic and ionic transportation but also exerts a synergistic effect between the BCP and NiHCF nanocubes to trigger the kinetics of the electron and ion transport. It is expected that such a promising environmentally friendly alternative cathode material can be widely applied for sodium-ion batteries (SIBs).
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