Effect of heat-treatment of manganese oxide deposited on stainless steel 316L current collector surface towards carbon based supercapacitor performance

B. N M Dolah, Mohamad Deraman, M. Suleman, Mohd. Amir Radhi Othman, M. R M Jasni, N. S M Nor

Research output: Contribution to journalArticle

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Abstract

Manganese oxide was deposited on the surface of stainless steel (SS) foil current collector (CC) using a simple immersion method followed by heat-treatment at three different temperatures (70, 200 and 400 °C) for 3 h. The CC deposited with manganese oxide without and with heat treatment were used in symmetrical supercapacitor cells using highly porous activated carbon electrodes and LiCl electrolyte. The heat-treatment changes the structure (from amorphous to crystalline phase) and surface morphology of manganese oxide deposited on the CC surface as evidenced by X-ray diffraction and field emission scanning electron microscopy studies. The electrochemical impedance spectroscopy, cyclic voltammetry and galvanic charge-discharge characterization results of the supercapacitor cells demonstrate that the heat-treatment temperature of 70 °C results in a maximum increase of ~70 % in specific capacitance, ~140 % in specific power and ~280 % in specific energy compared to the cell using CC deposited with manganese oxide at room temperature. Further, a 10-fold decrement in response time (from ~ 14 to ~ 1.4 s) is achieved for a heat-treatment at 70 °C which implies a ten times faster delivery of energy. These results show the superiority of CC deposited with manganese oxide heat-treated at 70 °C over the manganese oxide deposited at other temperatures.

Original languageEnglish
Pages (from-to)2466-2484
Number of pages19
JournalInternational Journal of Electrochemical Science
Volume12
Issue number3
DOIs
Publication statusPublished - 1 Mar 2017

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Manganese oxide
Stainless Steel
Carbon
Stainless steel
Heat treatment
Temperature
Electrochemical impedance spectroscopy
Field emission
Activated carbon
Metal foil
Electrolytes
Cyclic voltammetry
Surface morphology
Supercapacitor
manganese oxide
Capacitance
Crystalline materials
X ray diffraction
Scanning electron microscopy
Electrodes

Keywords

  • Activated carbon
  • Electrochemical properties
  • Manganese oxide
  • Supercapacitors
  • Wet chemical deposition

ASJC Scopus subject areas

  • Electrochemistry

Cite this

Effect of heat-treatment of manganese oxide deposited on stainless steel 316L current collector surface towards carbon based supercapacitor performance. / Dolah, B. N M; Deraman, Mohamad; Suleman, M.; Othman, Mohd. Amir Radhi; Jasni, M. R M; Nor, N. S M.

In: International Journal of Electrochemical Science, Vol. 12, No. 3, 01.03.2017, p. 2466-2484.

Research output: Contribution to journalArticle

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