Electrochemical performance of activated carbon-supported vanadomolybdates electrodes for energy conversion

Maity, Sukanya and Vannathan, Anjana Anandan and Kella, Tatinaidu and Shee, Debaprasad and Das, Partha Pratim and Mal, Sib Sankar (2021) Electrochemical performance of activated carbon-supported vanadomolybdates electrodes for energy conversion. Ceramics International. ISSN 02728842

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Abstract

Reinforcing polyoxomolybdates (POMs) into the activated carbon (AC) template engenders a nanohybrid electrode material for high-performance supercapacitor applications. Herein, a first-time novel integration of two polyoxometalates ([PVMo11O40]4-, [PV2Mo10O40]5-) with AC has been demonstrated, and their structural and electrochemical performances were analyzed. AC-VMo11 composite displayed an enhanced capacitance of 450 Fg-1 with an improved energy density of 59.7 Whkg-1. Furthermore, the symmetric supercapacitor cell for AC-VMo11 and AC-V2Mo10 showed high cell capacitances of 38.8 and 20.01 mF, respectively, alongside 99.99% capacitance retention of over 5000 cycles. In addition, the influence of ionic liquid as an electrolyte on AC-V2Mo10 based supercapacitor cell was investigated in tetrabutylammonium bromide (TBAB) electrolyte solution.

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IITH Creators:

IITH Creators	ORCiD
Shee, Debaprasad	UNSPECIFIED

Item Type:

Article

Uncontrolled Keywords:

Activated carbon supported; Electrochemical performance; Electrochemical-impedance spectroscopies; Energy; Energy density; Nano hybrids; Polyoxomolybdates; Power densities; Symmetric supercapacitor; Vanadophosphomolybdate;Capacitance; Electrochemical electrodes; Electrochemical impedance spectroscopy; Electrolytes; Electrolytic capacitors; Energy conversion; Ionic liquids; Molybdenum compounds; Supercapacitor

Subjects:

Electrical Engineering

Divisions:

Department of Chemical Engineering

Depositing User:

. LibTrainee 2021

Date Deposited:

24 Jul 2021 04:42

Last Modified:

24 Jul 2021 04:42

URI:

http://raiithold.iith.ac.in/id/eprint/8497