Pu Jun, Wang Tingting, Wang Haiyang, Tong Yao, Lu Chenchen, Kong Wei, Wang Zhenghua
Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000 (P. R. China), Fax: (+86) 553-3869302.
School of Chemical Engineering, Wuhan University of Technology, Wuhan, 430070 (P. R. China).
Chempluschem. 2014 Apr;79(4):577-583. doi: 10.1002/cplu.201300431. Epub 2014 Feb 13.
Arrays of NiCo S nanotubes on nickel foam were prepared by means of a two-step method, and were directly applied as a binder-free supercapacitor electrode. Such a binder-free method enables intimate contact between the current collector and the active materials, and can effectively improve ion and charge transportation. As a result, the electrochemical performances of supercapacitors can be improved. The as-prepared NiCo S nanotubes/Ni foam electrode shows a high specific capacitance (738 F g at 4 A g ), excellent rate capability (78 % capacitance retention at 32 A g ), and good cycling stability (retention capacity of 93.4 % after 4000 cycles), which suggests its promising application for electrochemical capacitors.
通过两步法制备了泡沫镍上的NiCo S纳米管阵列，并将其直接用作无粘结剂超级电容器电极。这种无粘结剂方法能够使集流体与活性材料紧密接触，并能有效改善离子和电荷传输。结果，超级电容器的电化学性能得以提高。所制备的NiCo S纳米管/泡沫镍电极表现出高比电容（在4 A g时为738 F g）、优异的倍率性能（在32 A g时电容保持率为78%）和良好的循环稳定性（4000次循环后容量保持率为93.4%），这表明其在电化学电容器方面具有广阔的应用前景。
