School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China; Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221, United States.
School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China.
J Colloid Interface Sci. 2019 Nov 15;556:449-457. doi: 10.1016/j.jcis.2019.08.087. Epub 2019 Aug 24.
Three-dimensional (3D) carbon-coated NiCoS nanowires structures doped with nitrogen are used for energy storage and conversions. The nitrogen doping in both the carbon layer and NiCoS nanowires enhances the electrochemical performances. Here, an easily scalable and simple temperature treatment has been used to decorate carbon-coated NiCoS nanowires with nitrogen doping (NC@NiCoS NWs) in 3D carbon architecture (carbon cloth). Benefiting from the nitrogen doping and ultrathin carbon layer, the as-prepared 3D NC@NiCoS NWs electrode exhibits the superior electrochemical performance for both asymmetric supercapacitor and electrocatalytic water splitting. An asymmetric supercapacitor assembled by the NC@NiCoS NWs and active carbon electrodes achieves a high energy density of 1.72 mWh cm (68.87 Wh kg) under a power density of 10.63 mW cm (425 W kg) with 90.1% retention of initial capacitance after 10,000 cycles. When employed as the electrocatalyst, the NC@NiCoS NWs show high activities towards electrocatalytic water splitting.
三维（3D）碳涂层掺氮 NiCoS 纳米线结构用于储能和转化。碳层和 NiCoS 纳米线中的氮掺杂增强了电化学性能。在这里，采用了一种易于扩展且简单的温度处理方法，在 3D 碳结构（碳布）中用氮掺杂（NC@NiCoS NWs）来装饰碳涂层 NiCoS 纳米线。得益于氮掺杂和超薄碳层，所制备的 3D NC@NiCoS NWs 电极在非对称超级电容器和电催化水分解方面表现出优异的电化学性能。由 NC@NiCoS NWs 和活性炭电极组装的非对称超级电容器在 10.63 mW cm（425 W kg）的功率密度下实现了 1.72 mWh cm（68.87 Wh kg）的高能量密度，在 10000 次循环后初始电容保持率为 90.1%。当用作电催化剂时，NC@NiCoS NWs 对电催化水分解表现出高活性。
