Enhance supercapacitive performance of Ni foam electrode and MnCo₂O_4.5/Ni foam electrode

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• 作者：Yunyun Fu ; Hai He ; Xiaoxin Li ; Lili Wu…
• 刊名：Journal of Materials Science: Materials in Electronics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：28
• 期：2
• 页码：1562-1571
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Optical and Electronic Materials; Characterization and Evaluation of Materials;
• 出版者：Springer US
• ISSN：1573-482X
• 卷排序：28

文摘

Ni foam can be directly used as supercapacitor electrode after chemical or electrochemical treatments. However, most of the treatments required relatively stringent reaction conditions. In this work, a facile CV activation method was adopted for the anodization of Ni foam. The fresh Ni hydroxide formed on the surface showed good capacitive performance. CV activation method also revealed great potential in improving the performance of oxide/Ni foam electrode. By CV cycle at 0–0.8 V, the MnCo₂O_4.5/Ni foam electrode showed a seven-fold increase of capacitance, and the rate performance of the electrode was significantly improved. The application of activation strategy to boost the capacitive performance of electrode based on Ni foam would have a wide significance in the development of high-performance electrode for energy storage.