Improved pseudo-capacitive performance of manganese oxide films synthesized by the facile sol-gel method with iron acetate addition

Chien Chon Chen, Chia Yu Yang, Chung Kwei Lin

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Manganese oxide electrodes possessing pseudo-capacitance behaviors were successfully made with a simple sol-gel method. The experimental results showed that the specific capacitance was 101.2 F/g for pure manganese oxide films after annealing at 300° C. However, the specific capacitance increased to 232.3 F/g with iron acetate (1.0 mol% Fe) addition and after annealing at 350° C. The surface morphology observations revealed that the annealing temperature of 350° C produced a higher surface area film with smaller pores. X-ray diffraction results showed that the manganese-iron oxide was composed of Mn 3O4 and Mn2O3 phases, without iron oxide diffraction peaks. The manganese-iron oxide electrode with Mn 3O4 and Mn2O3 phases exhibited good electrochemical performance and capacitance efficiency.

Original languageEnglish
Pages (from-to)7831-7838
Number of pages8
JournalCeramics International
Volume39
Issue number7
DOIs
Publication statusPublished - Sep 2013

Keywords

  • Iron acetate
  • Manganese acetate
  • Pseudo-capacitance
  • Sol-gel
  • Specific capacitance

ASJC Scopus subject areas

  • Ceramics and Composites
  • Process Chemistry and Technology
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Improved pseudo-capacitive performance of manganese oxide films synthesized by the facile sol-gel method with iron acetate addition'. Together they form a unique fingerprint.

  • Cite this