Formation and Characterization of Carbon and Nickel Oxide/Carbon Composites for Supercapacitors

Z. Kavaliauskasa, b, L. Marcinauskasa, c and P. Valatkeviciusa aLithuanian Energy Institute, Breslaujos 3, LT-4440, Kaunas, Lithuania bKaunas University of Applied Sciences, Pramonės 20, LT-50468, Kaunas, Lithuania cKaunas University of Technology, Studentu 50, LT-51368, Kaunas, Lithuania

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In this study a carbon and NiO/carbon electrodes were prepared and investigated. The surface roughness increases with the increase of the torch power. The addition of the NiO changes the surface structure from a snowflake-like to a mesh-like. It was demonstrated that the addition of the nickel oxide to amorphous carbon increases the specific capacitance of composite electrode. However, the NiO/carbon electrodes have a lower breakdown voltage values and longer charge-discharge cycles.

DOI: 10.12693/APhysPolA.119.253 PACS numbers: 81.15.-z, 81.05.U-, 68.55.J-