Ideal pseudocapacitive performance of the Mn oxide anodized from the nanostructured and amorphous Mn thin film electrodeposited in BMP-NTf2 ionic liquid

Jeng Kuei Chang, Chiung Hui Huang, Wen-Ta Tsai, Ming Jay Deng, I-Wen Sun

研究成果: Article同行評審

51 引文 斯高帕斯(Scopus)

摘要

A novel electrochemical route to prepare the Mn oxide with ideal pseudocapacitive performance is successfully proposed in this study. In n-butylmethylpyrrolidinium bis(trifluoromethylsulfony)imide (BMP-NTf2) ionic liquid, a nanostructured and amorphous Mn film could be electrodeposited on a Ni substrate. The metallic Mn films were then anodized in Na2SO4 aqueous solution by the potentiostatic, galvanostatic, and cyclic voltammetric methods and transformed to Mn oxides. It was confirmed that the different anodization courses would cause variations in the material characteristics of the prepared Mn oxides and therefore in their pseudocapacitive performance. The Mn oxide anodized by the cyclic voltammetric method showed the most promising specific capacitance of 402 F g-1; moreover, its capacitance retained ratio after 500 charge-discharge cycles was as high as 94%.

原文English
頁(從 - 到)435-440
頁數6
期刊Journal of Power Sources
179
發行號1
DOIs
出版狀態Published - 2008 四月 15

All Science Journal Classification (ASJC) codes

  • 可再生能源、永續發展與環境
  • 能源工程與電力技術
  • 物理與理論化學
  • 電氣與電子工程

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