Organic cation linkers polyoxomolybdate-polypyrrole nanocomposite-based supercapacitors

Muhammed Anees, P.K. and Shee, D. and et al, . (2021) Organic cation linkers polyoxomolybdate-polypyrrole nanocomposite-based supercapacitors. Ionics, 27 (9). pp. 4023-4035. ISSN 09477047

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A few new hybrid electrode materials have been synthesized and immobilized for the next-generation energy storage device. The hybrid electrodes PVMo11-TBA, PVMo11-BTA, PVMo11-TBP, PVMo11-TBA-PPy, PVMo11-BTA-PPy, and PVMo11-TBP-PPy were well characterized by NMR, XRD, FTIR, FESEM, BET, and tested for electrochemical performance. Among these hybrid electrode materials, the PVMo11-TBA-PPy electrode shows a high specific capacitance of 144.37 F/g at a 1A/g current density and incredible power and energy density of 1100.16 W/kg and 15.28 Wh/kg, respectively. The high electrode’s capacitance was due to the synergistic effect between the PPy and TBA-PVMo11 and high ionic diffusion compared with other synthesized electrodes. It also exhibited high cycle stability of 72.78% after 4500 cycles at 1 M H2SO4 electrolyte. The EIS offers a lower ESR value of 0.72 ohms for the PVMo11-TBA-PPy than PVMo11-TBA, indicating the rapid charge/discharge rate. On the other hand, the PVMo11-BTA-PPy and PVMo11-TBP-PPy electrodes showed lower capacitance values of 26.98 and 19.53. F/g at 0.4 and 1 A/g current density, respectively. Lowering the capacitance could be the prevention of the interaction of organic cations with the counter polyanion.

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IITH Creators:
IITH CreatorsORCiD
Shee, Debaprasad
Item Type: Article
Uncontrolled Keywords: Energy density, Ionic liquids, Phosphovanadomolybdic acid, Polypyrrole, Supercapacitors
Subjects: Chemical Engineering
Divisions: Department of Chemical Engineering
Depositing User: Mrs Haseena VKKM
Date Deposited: 15 Mar 2022 11:09
Last Modified: 15 Mar 2022 11:09
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