Growth of NiCo2O4@MnMoO4 Nanocolumn Arrays with Superior Pseudocapacitor Properties

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• 作者：Chunyu Cui ; Jiantie Xu ; Lei Wang ; Di Guo ; Minglei Mao ; Jianmin Ma ; Taihong Wang
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：April 6, 2016
• 年：2016
• 卷：8
• 期：13
• 页码：8568-8575
• 全文大小：721K
• ISSN：1944-8252

文摘

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.