Girija P. Mahamuni
Research Subjects
Research Interests
Girija P. Mahamuni has a total of 4 co-authors. Here are the top co-authors by number of shared publications:
- Nithesh Naik
Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, India
1 shared publication - Priya G. Gaikwad
Material Science Laboratory, Department of Physics, Institute of Science, Homi Bhabha State University, Mumbai, India
1 shared publication - Shrinivas. B. Kulkarni
Material Science Laboratory, Department of Physics, Institute of Science, Homi Bhabha State University, Mumbai, India
1 shared publication - Suhas Kowshik
Department of Mechanical and Industrial Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, India
1 shared publication
Latest Publications
- Open Access
- 25 December 2025
- Published by Springer Nature in Discover Materials
- Vol. 6 (1)
Evaluation of alkaline reagent mediated synthesis of Co₃O₄ thin films on the morphology and electrochemical performance for supercapacitor applications
This study presents a comparative analysis of cobalt oxide (Co₃O₄) thin films synthesized via electrodeposition using two different alkaline reagents—ammonium hydroxide (NH₄OH) and sodium hydroxide (NaOH)—on stainless steel substrates. The film prepared with NH₄OH exhibited enhanced crystallinity, confirmed by sharper (311) XRD peaks, and a highly porous morphology favourable for charge transport. FTIR and XPS characterizations confirmed the successful formation of spinel Co₃O₄ and the appropriate oxidation states of cobalt. Electrochemical evaluation in 1 M KOH showed that the electrode synthesized using NH₄OH delivered a specific capacitance of 1323 F/g at 10 mV/s, while maintaining 95.74% of its capacitance after 2000 charge–discharge cycles. These findings highlight that the type of alkaline reagent plays a crucial role in tailoring the structural and electrochemical behaviour of Co₃O₄ thin films, offering a viable route to optimize electrodes for enhanced energy storage supercapacitor applications.
- 25 December 2025
- Published by Springer Nature in Discover Materials
- Vol. 6 (1)
Open AccessEvaluation of alkaline reagent mediated synthesis of Co₃O₄ thin films on the morphology and electrochemical performance for supercapacitor applications
This study presents a comparative analysis of cobalt oxide (Co₃O₄) thin films synthesized via electrodeposition using two different alkaline reagents—ammonium hydroxide (NH₄OH) and sodium hydroxide (NaOH)—on stainless steel substrates. The film prepared with NH₄OH exhibited enhanced crystallinity, confirmed by sharper (311) XRD peaks, and a highly porous morphology favourable for charge transport. FTIR and XPS characterizations confirmed the successful formation of spinel Co₃O₄ and the appropriate oxidation states of cobalt. Electrochemical evaluation in 1 M KOH showed that the electrode synthesized using NH₄OH delivered a specific capacitance of 1323 F/g at 10 mV/s, while maintaining 95.74% of its capacitance after 2000 charge–discharge cycles. These findings highlight that the type of alkaline reagent plays a crucial role in tailoring the structural and electrochemical behaviour of Co₃O₄ thin films, offering a viable route to optimize electrodes for enhanced energy storage supercapacitor applications.