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Wiley, Advanced Materials, 33(26), p. 5869-5875, 2014

DOI: 10.1002/adma.201402041

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A New Benchmark Capacitance for Supercapacitor Anodes by Mixed-Valence Sulfur-Doped V6O13−x

Journal article published in 2014 by Teng Zhai ORCID, Xihong Lu ORCID, Yichuan Ling, Minghao Yu, Gongming Wang, Tianyu Liu, Chaolun Liang, Yexiang Tong, Yat Li ORCID
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This paper is available in a repository.

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Abstract

A new pseudocapacitor anode, sulfur-doped V6 O13-x , is reported. It achieves a benchmark capacitance of 1353 F/g (0.72 F/cm(2) ) at a current density of 1.9 A/g (1 mA/cm(2) ) in 5 M LiCl solution. The charges are stored chemically in the electrode via reversible redox reactions that involve multiple oxidation states of vanadium (V(3+) , V(4+) and V(5+) ).