Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 43, Issue 14, Pages 7128-7139Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2018.02.153
Keywords
Hydrogen evolution reaction (HER); PANI-MWCNT; Supercapacitor; Water splitting
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Funding
- INSPIRE Faculty Award, Department of Science and Technology (DST), Government of India [IFA 13, PH-71]
- INSPIRE fellowship, DST, Government of India [IF-140920]
- CSIR, Government of India [09/096(0898)/2017-EMR-I]
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Polyaniline-multiwalled carbon nanotube (PANI-MWCNT) composite synthesized through chemical polymerization is investigated as a possible electrode material for supercapacitor as well as an electro-catalyst for hydrogen evolution reaction (HER) in acidic medium. UV-Vis spectroscopy, FTIR spectroscopy and field emission scanning electron microscopy (FESEM) have been used to characterize the electrode material. The binder-free electrodes were prepared and they exhibit a specific capacitance of 540.29 F g(-1) at a scan rate of 2 mV s(-1) in 1 MH2SO4 electrolyte. The material exhibits excellent pseudocapacitive behaviour due to the presence of PANI with long-term cyclic stability of 87.4% retention after 5000 cycles. PANI-MWCNT composite also shows good HER activity, with overpotential of -395 mV. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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