| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1488448 | Materials Research Bulletin | 2014 | 5 Pages |
•Characterization of MnO2, PANI and PANI/MnO2 reported.•CV, galvanostatic charging discharging and EIS reported.•The observations have shown substantial increase in voltage window of MnO2.•Paper reports improvement in specific energy and power of the ES.•Simulation studies are carried out on observed EIS.
The present paper discusses synthesis and characterization of MnO2, poly-aniline (PANI) and PANI/MnO2 thin films on stainless steel substrates (SS) for electrochemical supercapacitor applications. The MnO2 thin films are formed using galvano-static electrodeposition of Mn, following electrochemical oxidation in a KOH bath. PANI and PANI/MnO2 layered thin films are also prepared via electrochemical polymerization and electrodeposition techniques. The thin films are investigated for their structural and morphological studies. Further, the electrochemical super-capacitive properties are probed using cyclic voltametry (CV), galvano-static charging–discharging and electrochemical impedance spectroscopy (EIS) techniques. The layered PANI/MnO2 has shown a significant increase in voltage window and consequently the specific energy and power over parent MnO2 electrode.
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