Electrochemical performance of activated carbon-supported vanadomolybdates electrodes for energy conversion. Issue 19 (1st October 2021)

• Record Type: Journal Article
• Authors: Maity, Sukanya; Vannathan, Anjana Anandan; Kella, Tatinaidu; Shee, Debaprasad; Das, Partha Pratim; Mal, Sib Sankar
• Is Part Of: Ceramics international. Volume 47:Issue 19(2021)
• Page Start: 27132
• Page End: 27141
• Publication Date: 2021-10-01
• Subjects: Activated carbon -- Vanadophosphomolybdate -- Energy density -- Power density -- Electrochemical impedance spectroscopy -- Symmetric supercapacitors; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.06.128
• Languages: English
• ISSNs: 0272-8842

Abstract

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 ([PVMo11 O40 ] 4-, [PV2 Mo10 O40 ] 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-V2 Mo10 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-V2 Mo10 based supercapacitor cell was investigated in tetrabutylammonium bromide (TBAB) electrolyte solution.