Cathode Materials for Hybrid Supercapacitors Based on Ozonated Reduced Graphene Oxide

A carbon material capable of reversible electrochemical oxidation and reduction with relatively high electrical conductivity was prepared by ozonation of thermally reduced graphene oxide. The specific discharge energy for such materials used in lithium ion electrochemical cell cathodes with non-aque...

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Published inDoklady. Physical chemistry (1991) Vol. 478; no. 2; pp. 35 - 38
Main Authors Varfolomeev, S. D., Kalinichenko, V. N., Chervonobrodov, S. P., Bibikov, S. B., Razumovskii, S. D., Podmasteryev, V. V., Maltsev, A. A., Gryzlov, D. Yu, Melnikov, V. P.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.02.2018
Springer Nature B.V
Subjects
Aqueous electrolytes
Cell cathodes
Chemistry
Chemistry and Materials Science
Electric energy storage
Electrical resistivity
Electrochemical oxidation
Electrode materials
Graphene
Lithium
Lithium ions
Nonaqueous electrolytes
Physical Chemistry
Storage systems
Supercapacitors
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Summary:A carbon material capable of reversible electrochemical oxidation and reduction with relatively high electrical conductivity was prepared by ozonation of thermally reduced graphene oxide. The specific discharge energy for such materials used in lithium ion electrochemical cell cathodes with non-aqueous electrolytes (LP-71) can reach 540 W h/kg at 40 mA/g current, while the average specific discharge power is 11.5 kW/kg at 5 A/g current. The specific charge after 2500 charge/discharge cycles at 5 A/g current was at a level of 93% of the initial value. The obtained materials appear promising for the design of new electricity storage systems.
ISSN:0012-5016
1608-3121
DOI:10.1134/S0012501618020045