A new benchmark capacitance for supercapacitor anodes by mixed-valence sulfur-doped V6O(13-x)

Teng Zhai; Xihong Lu; Yichuan Ling; Minghao Yu; Gongming Wang; Tianyu Liu; Chaolun Liang; Yexiang Tong; Yat Li

doi:10.1002/adma.201402041

A new benchmark capacitance for supercapacitor anodes by mixed-valence sulfur-doped V6O(13-x)

Adv Mater. 2014 Sep 3;26(33):5869-75. doi: 10.1002/adma.201402041. Epub 2014 Jul 30.

Authors

Teng Zhai¹, Xihong Lu, Yichuan Ling, Minghao Yu, Gongming Wang, Tianyu Liu, Chaolun Liang, Yexiang Tong, Yat Li

Affiliation

¹ KLGHEI of Environment and Energy Chemistry, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, P.R. China; Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, CA, 95064, USA.

PMID: 25080307
DOI: 10.1002/adma.201402041

Abstract

A new pseudocapacitor anode, sulfur-doped V6O(13-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+)).

Keywords: anode; mixed-valence; sulfur doping; supercapacitors; vanadium oxide.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.