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A Polyoxovanadate as an Advanced Electrode Material for Supercapacitors

Lookup NU author(s): Dr Jochen Friedl, Professor Ulrich Stimming

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Abstract

Polyoxovanadate Na6V10O28 is investigated for the first time as electrode material for supercapacitors (SCs). The electrochemical properties of Na6V10O28 electrodes are studied in Li+-containing organic electrolyte (1 M LiClO4 in propylene carbonate) by galvanostatic charge/discharge and cyclic voltammetry in a three-electrode configuration. Na6V10O28electrodes exhibit high specific capacitances of up to 354 F g−1. An asymmetric SC with activated carbon as positive electrode and Na6V10O28 as negative electrode is fabricated and exhibits a high energy density of 73 Wh kg−1 with a power density of 312 W kg−1, which successfully demonstrates that Na6V10O28 is a promising electrode material for high-energy SC applications.

Publication metadata

Author(s): Chen H-Y, Wee G, Al-Oweini R, Friedl J, Tan KS, Wong CL, Kortz U, Stimming U, Srinivasan M

Publication type: Article

Publication status: Published

Journal: ChemPhysChem

Year: 2014

Volume: 15

Issue: 10

Pages: 2162-2169

Print publication date: 21/07/2014

Online publication date: 09/05/2014

Date deposited: 04/04/2016

ISSN (print): 1439-4235

ISSN (electronic): 1439-7641

Publisher: Wiley-VCH

URL: http://dx.doi.org/10.1002/cphc.201400091

DOI: 10.1002/cphc.201400091

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