Deposition of ruthenium nanoparticles on carbon aerogels for high energy density supercapacitor electrodes

Journal Article · Sun Nov 30 23:00:00 EST 1997 · Journal of the Electrochemical Society

DOI:https://doi.org/10.1149/1.1838142· OSTI ID:603715

Miller, J M; Dunn, B ^[1]; Tran, T D; Pekala, R W ^[2]

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1. Univ. of California, Los Angeles, CA (United States). Dept. of Materials Science and Engineering
2. Lawrence Livermore National Labs., CA (United States). Chemical Sciences Div.

The preparation and characterization of high surface area ruthenium/carbon aerogel composite electrodes for use in electrochemical capacitors is reported. These new materials have been prepared by the chemical vapor impregnation of ruthenium into carbon aerogels to produce a uniform distribution of adherent {approx}20 {angstrom} nanoparticles on the aerogel surface. The electrochemically oxidized ruthenium particles contribute a pseudocapacitance to the electrode and dramatically improve the energy storage characteristics of the aerogel. These composites have demonstrated specific capacitances in excess of 200 F/g, in comparison to 95 F/g for the untreated aerogel.

• Sponsoring Organization: USDOE, Washington, DC (United States)
• OSTI ID: 603715
• Journal Information: Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 12 Vol. 144; ISSN JESOAN; ISSN 0013-4651
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
36 MATERIALS SCIENCE
CAPACITANCE
CAPACITIVE ENERGY STORAGE EQUIPMENT
CARBON
CHEMICAL VAPOR DEPOSITION
COMPOSITE MATERIALS
ELECTRODES
FABRICATION
GELS
RUTHENIUM