Titania supported bio-derived activated carbon as an electrode material for high-performance supercapacitors

Bortamuly, Rajashree and Naresh, Vangapally and Das, Manash R. and Kumar, V. Kiran and Muduli, Sadananda and Martha, Surendra K. and et al, . (2021) Titania supported bio-derived activated carbon as an electrode material for high-performance supercapacitors. Journal of Energy Storage, 42. pp. 1-9. ISSN 2352-152X

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Supercapacitors are promising energy storage devices compared to batteries due to their long cycle life and high-power density. In this work, we report a supercapacitor based on Titania supported bio-derived activated Carbon with high power density. The composite electrode material shows an initial specific capacitance of 214 F g−1 at 1 A g−1 and exhibits 92% of capacitance retention for 5000 cycles in 1 M Na2SO4 solution. The enhanced electrochemical performance is due to the synergistic effect of the electric double-layer capacitance behavior of carbon and the pseudo-capacitive nature of Titania. An energy density of 29.72 and 20 Wh kg−1 can be achieved at a power density of 499 and 4000 W kg−1, respectively. The supercapacitor based on TiO2 based intercalation compounds provides significantly high energy at the expense of power, which may be appropriate for several applications. © 2021

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IITH Creators:
IITH CreatorsORCiD
Martha, Surendra Kumarhttps://orcid.org/0000-0002-7762-7237
Item Type: Article
Additional Information: RB is thankful to MHRD, India for providing fellowship under TEQIP-III scheme. The authors are also grateful to CSIR-NEIST Jorhat, IIT Hyderabad, and Gauhati University for the sophisticated analytical facilities. SKM acknowledges DST-IISc Energy Storage Platform on Supercapacitors and Power Dense Devices through the MECSP-2K17 program under grant no. DST/TMD/MECSP/2K17/20, Government of India for financial support to this work.
Uncontrolled Keywords: Bio-derived carbon; Cycling stability; EDLC; Pseudocapacitance; Titania
Subjects: Chemistry
Divisions: Department of Chemistry
Depositing User: . LibTrainee 2021
Date Deposited: 06 Oct 2022 10:01
Last Modified: 06 Oct 2022 10:01
URI: http://raiith.iith.ac.in/id/eprint/10812
Publisher URL: http://doi.org/10.1016/j.est.2021.103144
OA policy: https://v2.sherpa.ac.uk/id/publication/35361
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