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Phenothiazine–MXene Aqueous Asymmetric Pseudocapacitors
Journal article   Peer reviewed

Phenothiazine–MXene Aqueous Asymmetric Pseudocapacitors

Muhammad Boota, Matthieu Bécuwe and Yury Gogotsi
ACS applied energy materials, v 3(4), pp 3144-3149
27 Apr 2020

Abstract

phenothiazine redox-active organic molecule titanium carbide pseudocapacitors MXene supercapacitor
We report here a molecular phenothiazine-based electrode as a high capacitance and long cycle life (77% retention after 80 000 cycles) pseudocapacitive organic material after hydrothermal deposition on reduced graphene oxide (rGO). Given the high stability of phenothiazine coated rGO hybrid electrodes under positive potentials, pseudocapacitive asymmetric supercapacitors were manufactured using two-dimensional titanium carbide (Ti3C2T x ) MXene as the negative electrode, which allowed expansion of the voltage window up to 1.4 V in 3 M H2SO4. The optimized asymmetric pseudocapacitors showed capacitance retention of over 80% after 30 000 cycles at 100 mV/s, which is one of the highest for aqueous asymmetric supercapacitors.

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Chemistry, Physical
Energy & Fuels
Materials Science, Multidisciplinary
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