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Publication
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| Title of Article |
Synthesis and Supercapacitor Characteristics of Hydrothermally-deposited MnO2 Films and Chemically Co-deposited MnO2-polyaniline Films on Stainless-steel Substrates |
| Date of Acceptance |
12 June 2015 |
| Journal |
| Title of Journal |
Journal of the Korean Physical Society |
| Standard |
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| Institute of Journal |
Journal of the Korean Physical Society |
| ISBN/ISSN |
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| Volume |
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| Issue |
66 |
| Month |
๋June |
| Year of Publication |
2015 |
| Page |
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| Abstract |
MnO2 films were hydrothermally grown directly onto stainless-steel substrates and used as supercapacitor
electrodes. MnO2 with a cube-like structure was observed by using scanning electron
microscopy (SEM) and transmission electron microscopy (TEM). The measured sizes of the cubes
were in the range of 270 − 820 nm. The specific capacitance (SC) of the 5-hour hydrothermallygrown
MnO2 films was ∼20.2 F/g, which was slightly higher than that of the 3-hour films (∼13.8
F/g). The low values of the SC of the hydrothermally-deposited MnO2 films are attributed to their
high series resistances of 1.73 − 2.06 Ω measured by using electrochemical impedance spectroscopy.
However, the specific capacitance was greatly increased, up to ∼226 F/g, after a polyaniline polymer
had been added into the MnO2 hydrothermal reaction, there by producing a composite of the
MnO2 and the polyaniline polymer. This SC improvement was attributed to presence of two active
materials (polyaniline and MnO2) and the reduction of the electrode series resistance to 0.93 Ω. |
| Keyword |
Supercapacitor, Hydrothermal deposition, MnO2, Polyaniline, Composited MnO2-polyaniline |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ตีพิมพ์แล้ว |
| Level of Publication |
นานาชาติ |
| citation |
true |
| Part of thesis |
true |
| Attach file |
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| Citation |
0
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Journal Publication
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