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Towards a Further Generation of High‐Energy Carbon‐Based Capacitors by Using Redox‐Active Electrolytes
Author(s) -
Roldán Silvia,
Blanco Clara,
Granda Marcos,
Menéndez Rosa,
Santamaría Ricardo
Publication year - 2011
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201006811
Subject(s) - pseudocapacitance , supercapacitor , electrolyte , capacitance , active carbon , redox , hydroquinone , electrolytic capacitor , capacitor , carbon fibers , materials science , chemistry , chemical engineering , inorganic chemistry , electrode , electrical engineering , organic chemistry , composite material , engineering , voltage , composite number , waste management
An active contribution : The specific capacitance of carbon‐based supercapacitors can be significantly improved by the addition of an electrochemically active compound (hydroquinone) to the supporting electrolyte. The strong contribution of the redox‐active electrolyte to the pseudocapacitance of the system results in the largest capacitance values obtained for an activated carbon‐based supercapacitor.