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

Zhai, Teng; Lu, Xihong; Ling, Yichuan; Yu, Minghao; Wang, Gongming; Liu, Tianyu; Liang, Chaolun; Tong, Yexiang et al. · Adv Mater · 2014

basic_science · Level V

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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+)).