Hierarchical mesoporous NiCo2O4@MnO2 core-shell nanowire arrays on nickel foam for aqueous asymmetric supercapacitors
Hierarchical mesoporous NiCo2O4@MnO2 core-shell nanowire arrays on nickel foam for aqueous asymmetric supercapacitors
复制标题
用于水性不对称超级电容器的泡沫镍上分层介孔NiCo2O4@MnO2核壳纳米线阵列
DOI：
10.1039/c3ta14647b
复制
发表时间：
2014-01-01
影响因子：
11.9
通讯作者：
Hu, Junqing
中科院分区：
文献类型：
--
作者：
Xu, Kaibing;Li, Wenyao;Hu, Junqing
我们展示了设计和制造的分级介孔NiCo2O4@MnO2核壳纳米线阵列的泡沫镍通过一个简单的水热和电沉积过程的超级电容器的应用。为了提高能量密度和电压窗口，以泡沫镍为正极，活性炭（AC）为负极，成功制备了基于分级介孔NiCo2O4@MnO2核壳纳米线阵列的高压非对称超级电容器。所制备的非对称超级电容器器件在1 mA cm（-2）的电流密度下实现了112 F g（-1）的比电容，具有1.5V的稳定工作电压和35 W h kg（-1）的最大能量密度。NiCo2O4@MnO2核壳纳米线阵列具有优异的电化学性能，有望成为下一代高能量密度超级电容器的电极材料。
We demonstrate the design and fabrication of hierarchical mesoporous NiCo2O4@MnO2 core-shell nanowire arrays on nickel foam via a facile hydrothermal and electrodeposition process for supercapacitor applications. In order to increase the energy density and voltage window, a high-voltage asymmetric supercapacitor based on hierarchical mesoporous NiCo2O4@MnO2 core-shell nanowire arrays on nickel foam as the positive electrode and activated carbon (AC) as the negative electrode was successfully fabricated. The as-fabricated asymmetric supercapacitor device achieved a specific capacitance of 112 F g(-1) at a current density of 1 mA cm(-2) with a stable operational voltage of 1.5 V and a maximum energy density of 35 W h kg(-1). The present NiCo2O4@MnO2 core-shell nanowire arrays with remarkable electrochemical properties could be considered as potential electrode materials for next generation supercapacitors in high energy density storage systems.