Hybrid manganese oxide films for supercapacitor application prepared by sol-gel technique

Chin Yi Chen, Sheng Chang Wang, Yue Han Tien, Wen Ta Tsai, Chung Kwei Lin

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Hybrid films were prepared by adding various concentrations of meso-carbon microbeads (MCMB) during sol-gel processing of manganese oxide films. The heat-treated films were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). In addition, electrochemical performance of the MCMB-added Mn-oxide hybrid coatings was evaluated by cyclic voltammetry (CV) and compared with its unadded counterpart. Experimental results showed that Mn-oxide films exhibited a mixture of Mn2O3 and Mn3O4 phases. The higher the heat-treatment temperature, the more Mn2O3 can be observed. The specific capacitance of the unadded Mn-oxide electrodes is 209 F/g. Because the MCMB particles provide more interfacial surface area for electrochemical reactions, a significant improvement can be noticed by adding MCMB in Mn-oxide coatings. The 300 °C heat-treated hybrid Mn-oxide coating with a Mn/MCMB ratio of 10/1 exhibits the highest value of 350 F/g, showing a ~ 170% increase in specific capacitance.

Original languageEnglish
Pages (from-to)1557-1560
Number of pages4
JournalThin Solid Films
Volume518
Issue number5
DOIs
Publication statusPublished - Dec 31 2009
Externally publishedYes

Fingerprint

Manganese oxide
manganese oxides
electrochemical capacitors
Oxide films
Sol-gels
oxide films
Carbon
Oxides
gels
carbon
oxides
coatings
Coatings
Capacitance
capacitance
heat
Cyclic voltammetry
heat treatment
Heat treatment
Supercapacitor

Keywords

  • Cyclic voltammetry
  • Hybrid manganese oxide film
  • Manganese oxide
  • MCMB
  • Supercapacitor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Hybrid manganese oxide films for supercapacitor application prepared by sol-gel technique. / Chen, Chin Yi; Wang, Sheng Chang; Tien, Yue Han; Tsai, Wen Ta; Lin, Chung Kwei.

In: Thin Solid Films, Vol. 518, No. 5, 31.12.2009, p. 1557-1560.

Research output: Contribution to journalArticle

Chen, Chin Yi ; Wang, Sheng Chang ; Tien, Yue Han ; Tsai, Wen Ta ; Lin, Chung Kwei. / Hybrid manganese oxide films for supercapacitor application prepared by sol-gel technique. In: Thin Solid Films. 2009 ; Vol. 518, No. 5. pp. 1557-1560.
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