Wei Chengzhen, Cheng Cheng, Zhao Junhong, Wang Yan, Cheng Yanyan, Xu Yazhou, Du Weimin, Pang Huan
College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, 455002, Henan (P. R. China).
Chem Asian J. 2015 Mar;10(3):679-86. doi: 10.1002/asia.201403198. Epub 2015 Feb 3.
α-NiS and β-NiS hollow spheres were successfully synthesized via the Kirkendall effect under different hydrothermal conditions. The obtained α-NiS and β-NiS hollow spheres were evaluated as electrode materials for supercapacitors. Importantly, the α-NiS hollow sphere electrode has a large specific capacitance (562.3 F g(-1) at 0.60 A g(-1)) and good cycling property (maintaining about 97.5% at 2.4 A g(-1) after 1000 cycles). Furthermore, the as-prepared α-NiS and β-NiS hollow spheres were successfully applied to construct electrochemical glucose sensors. Especially, the α-NiS hollow spheres exhibit a good sensitivity (155 μA mM(-1) cm(-2)), low detection limit (0.125 μM), and a wide linear range.
通过在不同水热条件下的柯肯达尔效应成功合成了α-NiS和β-NiS空心球。将所制备的α-NiS和β-NiS空心球作为超级电容器的电极材料进行了评估。重要的是，α-NiS空心球电极具有较大的比电容（在0.60 A g(-1)时为562.3 F g(-1)）和良好的循环性能（在2.4 A g(-1)下1000次循环后保持约97.5%）。此外，所制备的α-NiS和β-NiS空心球成功应用于构建电化学葡萄糖传感器。特别是，α-NiS空心球表现出良好的灵敏度（155 μA mM(-1) cm(-2)）、低检测限（0.125 μM）和宽线性范围。
