Facile synthesis of honeycomb-structured Co–W–B composite for high-performance supercapacitors
Facile synthesis of honeycomb-structured Co–W–B composite for high-performance supercapacitors
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用于高性能超级电容器的蜂窝结构Co-W-B复合材料的简便合成
DOI:
10.1016/j.apsusc.2017.12.013
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发表时间:
2017-12
影响因子:
6.7
通讯作者:
Yongjin Zou
中科院分区:
文献类型:
--
作者:
Ying Yin;Cuili Xiang;Hailiang Chu;Huanzhi Zhang;Xu Fen;Erhu Yan;Lixian Sun;Chengying Tang;Yongjin Zou
A honeycomb-structured Co–W–B composite was prepared by a simple chemical reduction process in an alcohol solution. The structure and morphology of the Co–W–B composite was characterized by scanning electron microscopy, transmission electron microscopy, and X-ray diffraction. The results indicate that the composite was mainly composed of oxides of Co, W, and B as a result of oxidation in air, and it was a suitable material for high-performance pseudocapacitors. Electrochemical tests indicated that the Co–W–B composite exhibited a specific capacitance of 306.3 F g–1at a current density of 2 A g–1, which is much higher than that of a Co–B composite. Furthermore, the Co–W–B composite showed good stability, and the capacitance retained 89.2% of its initial capacitance after 2500 cycles. These results demonstrate that the honeycomb-structured Co–W–B composite is promising for use as an electrode material for supercapacitors.
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影响因子:
1.5
作者:
Wang Qingyong;Zou Yongjin;Xiang Cuili;Chu Hailiang;Liu Shusheng;Yan Erhu;Xu Fen;Sun Lixian;Tang Chengying
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6.6
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9.5
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Gao, Yihua