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Lookup NU author(s): Dr Jochen Friedl,
Professor Ulrich Stimming
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
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.
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
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
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