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Cover Picture: Electrochemistry Serving People and Nature: High‐Energy Ecocapacitors based on Redox‐Active Electrolytes (ChemSusChem 7/2012)
Author(s) -
Frackowiak Elzbieta,
Fic Krzysztof,
Meller Mikolaj,
Lota Grzegorz
Publication year - 2012
Publication title -
chemsuschem
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201290027
Subject(s) - supercapacitor , electrolyte , electrochemistry , redox , capacitor , capacitance , cover (algebra) , materials science , chemical engineering , inorganic chemistry , aqueous solution , chemistry , nanotechnology , electrode , voltage , electrical engineering , organic chemistry , engineering , mechanical engineering
The cover image highlights research by the group of Elzbieta Frackowiak at Poznan University of Technology, who describe in a Communication on p. 1181 the advantages of aqueous solutions of conjugated redox couples applied as electrolytes for electrochemical capacitors. Solutions of potassium iodide and vanadyl sulphate are investigated, and allow to reach high capacitance and voltage values. The energy density is about 20 Wh kg −1 with a maximum power density of 2 kW kg −1 . These electrolytes offer an interesting alternative to organic electrolytes, which are usually applied in commercial supercapacitors.