Electrodeposition of manganese-nickel oxide films on a graphite sheet for electrochemical capacitor applications

Hae Min Lee, Kangtaek Lee, Chang Koo Kim

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Manganese-nickel (Mn-Ni) oxide films were electrodeposited on a graphite sheet in a bath consisting of manganese acetate and nickel chloride, and the structural, morphological, and electrochemical properties of these films were investigated. The electrodeposited Mn-Ni oxide films had porous structures covered with nanofibers. The X-ray diffractometer pattern revealed the presence of separate manganese oxide (γ-MnO2) and nickel oxide (NiO) in the films. The electrodeposited Mn-Ni oxide electrode exhibited a specific capacitance of 424 F/g in Na2SO4 electrolyte. This electrode maintained 86% of its initial specific capacitance over 2000 cycles of the charge-discharge operation, showing good cycling stability.

Original languageEnglish
Pages (from-to)265-274
Number of pages10
JournalMaterials
Volume7
Issue number1
DOIs
Publication statusPublished - 2014 Feb 12

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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