Wan Houzhao, Li Lang, Xu Yang, Tan Qiuyang, Liu Xiang, Zhang Jun, Wang Hanbin, Wang Hao
Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices, Faculty of Physics and Electronic Science, Hubei University, Wuhan 430062, People's Republic of China.
Nanotechnology. 2018 May 11;29(19):194003. doi: 10.1088/1361-6528/aab129. Epub 2018 Feb 21.
Three-dimensional (3D) cotton-like Ni-Co layered double hydroxide nanosheet arrays/nickel nanowires (3D Ni-Co LDH/NiNw) were successfully fabricated through a facile chemical bath deposition method. The 3D nickel nanowires are used as a conductive substrate with robust adhesion for high-pseudocapacitance Ni-Co LDH. The 3D Ni-Co LDH/NiNw electrode shows a high areal specific capacitance of 14 F cm at 5 mA cm and quality specific capacitance of 466.6 F g at 0.125 A g with respect to the whole quality of the electrode. The fabricated asymmetric supercapacitor exhibits a remarkable energy density of 0.387 mWh cm using Ni-Co LDH/NiNw as the negative electrode. This high-performance composite electrode presents a new and affordable general approach for supercapacitors.
通过一种简便的化学浴沉积方法成功制备了三维（3D）棉状镍钴层状双氢氧化物纳米片阵列/镍纳米线（3D Ni-Co LDH/NiNw）。3D镍纳米线用作具有强附着力的导电基底，用于高赝电容的Ni-Co LDH。相对于电极的整体质量，3D Ni-Co LDH/NiNw电极在5 mA cm时表现出14 F cm的高面积比电容，在0.125 A g时表现出466.6 F g的质量比电容。使用Ni-Co LDH/NiNw作为负极制备的不对称超级电容器表现出0.387 mWh cm的显著能量密度。这种高性能复合电极展示了一种用于超级电容器的新型且经济实惠的通用方法。
