Phosphomolybdic acid embedded into biomass-derived biochar carbon electrode for supercapacitor applications

Shee, Debaprasad (2023) Phosphomolybdic acid embedded into biomass-derived biochar carbon electrode for supercapacitor applications. Journal of Electroanalytical Chemistry, 936. p. 117354. ISSN 1572-6657

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Abstract

In high-performance, clean, safe, and cost-effective ways, supercapacitors are among the most promising ways to store and release nonfossil energy. In recent years, renewable biomass-derived activated carbon has been explored as a potential option for electrode material. It restricts their specific capacitance despite being environment-friendly and possessing intrinsic mechanical strength. In order to overcome this limitation and preserve all other properties, we are infusing polyoxometalate into the activated carbon; this increases specific capacitance with its fast reversible redox behaviour and preserves the carbon's characteristics. Beside suffusing phosphomolybdic acid (PMA) into biomass waste material, such as orange peel-derived activated carbon (OPAC), a new hybrid material (OPAC-PMA) was developed. The nanohybrid design was revealed by structural and morphological research, which showed high interfacial contact, allowing polyanions to redox rapidly. The novel hybrid electrode material (OPAC-PMA) has a capacitance value of 66% higher than the bare OPAC electrode. A further study showed that OPAC-PMA composite showed 88.23% cycle stability in 0.5 M H2SO4 electrolyte at 6 A g−1 for 4000 cycles.

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IITH Creators:

IITH Creators	ORCiD
Shee, Debaprasad	https://orcid.org/0000-0002-3503-8098

Item Type:

Article

Uncontrolled Keywords:

Activated carbon; Electrochemical impedance spectroscopy; Orange peels; Phosphomolybdic acid; Activated carbon; Biomass; Capacitance; Citrus fruits; Cost effectiveness; Electrochemical electrodes; Electrolytes; Hybrid materials; Molybdenum compounds; Supercapacitor; Biochar; Carbon electrode; Electrochemical-impedance spectroscopies; Electrode material; High costs; Orange peels; Performance; Phosphomolybdic acid; Specific capacitance; Supercapacitor application; Electrochemical impedance spectroscopy

Subjects:

Chemical Engineering
Chemical Engineering > Organic products

Divisions:

Department of Chemical Engineering

Depositing User:

Mr Nigam Prasad Bisoyi

Date Deposited:

27 Sep 2023 11:10

Last Modified:

27 Sep 2023 11:10

URI:

http://raiithold.iith.ac.in/id/eprint/11706