skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Development of carbon-metal oxide supercapacitors from sol-gel derived carbon-ruthenium xerogels

Abstract

There has been increasing interest in electrochemical capacitors as energy storage systems because of their high power density and long cycle life, compared to battery devices. According to the mechanism of energy storage, there are two types of electrochemical capacitors. One type is based on double layer (dl) formation due to charge separation, and the other type is based on a faradaic process due to redox reactions. Sol-gel derived high surface area carbon-ruthenium xerogels were prepared from carbonized resorcinol-formaldehyde resins containing an electrochemically active form of ruthenium oxide. The electrochemical capacitance of these materials increased with an increase in the ruthenium content indicating the presence of pseudocapacitance associated with the ruthenium oxide undergoing reversible faradaic redox reactions. A specific capacitance of 256 F/g (single electrode) was obtained from a carbon xerogel containing 14 wt% Ru, which corresponded to more than 50% utilization of the ruthenium. The double layer accounted for 40% of this capacitance. This material was also electrochemically stable, showing no change in a cyclic voltammogram for over 2,000 cycles.

Authors:
; ;
Publication Date:
Research Org.:
Univ. of South Carolina, Columbia, SC (US)
Sponsoring Org.:
US Department of the Army; USDOE
OSTI Identifier:
20003167
DOE Contract Number:  
FC02-91ER75666
Resource Type:
Journal Article
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 146; Journal Issue: 9; Other Information: PBD: Sep 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 25 ENERGY STORAGE; CAPACITIVE ENERGY STORAGE EQUIPMENT; SOL-GEL PROCESS; RUTHENIUM OXIDES; CARBON; CAPACITANCE

Citation Formats

Lin, C., Ritter, J.A., and Popov, B.N. Development of carbon-metal oxide supercapacitors from sol-gel derived carbon-ruthenium xerogels. United States: N. p., 1999. Web. doi:10.1149/1.1392448.
Lin, C., Ritter, J.A., & Popov, B.N. Development of carbon-metal oxide supercapacitors from sol-gel derived carbon-ruthenium xerogels. United States. doi:10.1149/1.1392448.
Lin, C., Ritter, J.A., and Popov, B.N. Wed . "Development of carbon-metal oxide supercapacitors from sol-gel derived carbon-ruthenium xerogels". United States. doi:10.1149/1.1392448.
@article{osti_20003167,
title = {Development of carbon-metal oxide supercapacitors from sol-gel derived carbon-ruthenium xerogels},
author = {Lin, C. and Ritter, J.A. and Popov, B.N.},
abstractNote = {There has been increasing interest in electrochemical capacitors as energy storage systems because of their high power density and long cycle life, compared to battery devices. According to the mechanism of energy storage, there are two types of electrochemical capacitors. One type is based on double layer (dl) formation due to charge separation, and the other type is based on a faradaic process due to redox reactions. Sol-gel derived high surface area carbon-ruthenium xerogels were prepared from carbonized resorcinol-formaldehyde resins containing an electrochemically active form of ruthenium oxide. The electrochemical capacitance of these materials increased with an increase in the ruthenium content indicating the presence of pseudocapacitance associated with the ruthenium oxide undergoing reversible faradaic redox reactions. A specific capacitance of 256 F/g (single electrode) was obtained from a carbon xerogel containing 14 wt% Ru, which corresponded to more than 50% utilization of the ruthenium. The double layer accounted for 40% of this capacitance. This material was also electrochemically stable, showing no change in a cyclic voltammogram for over 2,000 cycles.},
doi = {10.1149/1.1392448},
journal = {Journal of the Electrochemical Society},
number = 9,
volume = 146,
place = {United States},
year = {1999},
month = {9}
}