Co3Se4 nanosheets embedded on N-CNT as an efficient electroactive material for hydrogen evolution and supercapacitor applications
By Bose, Ranjith; Patil, Bebi; Jothi, Vasanth Rajendiran; Kim, Tae-Hyun; Arunkumar, Paulraj; Ahn, Heejoon; Yi, Sung Chul
Published in Journal of Industrial and Engineering Chemistry
2018
Abstract
Co3Se4 on nitrogen doped carbon nanotube (N-CNT) with applications for supercapacitor and hydrogen evolution reaction (HER) is synthesized by pyrolysis and solvothermal processes. The catalyst due to improved electrical conductivity and increased rate of removal of H2 liberated, delivers a high HER activity, by reaching ?10 at 174mV and 240mV, Tafel slope of 73.2 and 43.8mVdec?1 in alkaline and acidic medium respectively. Co3Se4/N-CNT as supercapacitor electrodes, yields a capacitance of 114Fg?1 at a 2mVs?1 scan rate, with an excellent capacitive retention of 96% of the initial capacitance after 5000 cycles.
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