Electrophoretically deposited manganese oxide coatings for supercapacitor application

Chin Yi Chen, Sheng Chang Wang, Chia Yen Lin, Fan Shiong Chen, Chung Kwei Lin

研究成果: 雜誌貢獻文章同行評審

17 引文 斯高帕斯(Scopus)

摘要

In the present study, manganese oxide electrodes with promising pseudo-capacitive properties were prepared by electrophoretic deposition (EPD) using needle-like manganese dioxide powders. As-deposited coating exhibited a porous microstructure where the size and shape of the starting powders can be observed. The electrochemical performance of the as-deposited coating was then evaluated by cyclic voltammetry (CV) up to 300 times. The initial specific capacitance was 236 F/g which dropped to 200 F/g after 25 CV tests, and decreased gradually to 190 F/g thereafter. The electrochemical behaviors during EPD and CV were examined by synchrotron X-ray absorption spectroscopy techniques from which it was deciphered that a reduction reaction from Mn4+ to Mn3+ occurred during EPD concomitant with re-oxidization during repetitive CV cycles.
原文英語
頁(從 - 到)3469-3474
頁數6
期刊Ceramics International
35
發行號8
DOIs
出版狀態已發佈 - 12月 2009
對外發佈

ASJC Scopus subject areas

  • 電子、光磁材料
  • 陶瓷和複合材料
  • 製程化學與技術
  • 表面、塗料和薄膜
  • 材料化學

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