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A New Benchmark Capacitance for Supercapacitor Anodes by Mixed‐Valence Sulfur‐Doped V 6 O 13− x
Author(s) -
Zhai Teng,
Lu Xihong,
Ling Yichuan,
Yu Minghao,
Wang Gongming,
Liu Tianyu,
Liang Chaolun,
Tong Yexiang,
Li Yat
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201402041
Subject(s) - pseudocapacitor , valence (chemistry) , materials science , supercapacitor , anode , sulfur , vanadium , capacitance , doping , redox , benchmark (surveying) , electrode , nanotechnology , analytical chemistry (journal) , computer science , optoelectronics , chemistry , organic chemistry , metallurgy , geodesy , geography
A new pseudocapacitor anode , sulfur‐doped V 6 O 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+ ).