Department of Macromolecular Science and Engineering, Case Western Reserve University , Cleveland, Ohio 44106, United States.
ACS Appl Mater Interfaces. 2016 Apr 6;8(13):8568-75. doi: 10.1021/acsami.6b02962. Epub 2016 Mar 22.
Three-dimensional heterostructured NiCo2O4@MnMoO4 nanocolumn arrays (NCAs) on Ni foam were first fabricated through an improved two-step hydrothermal process associated with a successive annealing treatment. The hybrid NiCo2O4@MnMoO4 electrode exhibited remarkable pseudocapacitor property with high initial mass specific capacitance of 1705.3 F g(-1) at 5 mA cm(-2), and retained 92.6% after 5000 cycles, compared to the bare NiCo2O4 electrode with 839.1 F g(-1) and 90.9%. The excellent capacitive property of the NiCo2O4@MnMoO4 hydrid was attributed to its high-electron/ion-transfer rate, large electrolyte infiltrate area, and more electroactive reaction sites.
三维异质结构的 NiCo2O4@MnMoO4 纳米柱阵列（NCAs）首先通过改进的两步水热法与连续退火处理相结合在 Ni 泡沫上制备。与裸 NiCo2O4 电极（839.1 F g(-1)，90.9%）相比，NiCo2O4@MnMoO4 混合电极具有出色的赝电容性能，在 5 mA cm(-2) 时的初始质量比电容高达 1705.3 F g(-1)，并且在 5000 次循环后保留了 92.6%。NiCo2O4@MnMoO4 杂化物的优异电容性能归因于其高电子/离子转移率、大电解质渗透面积和更多的电活性反应位点。
