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

Journal Article · Mon Dec 01 00:00:00 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, Vol. 144, Issue 12; Other Information: PBD: Dec 1997
• Country of Publication: United States
• Language: English

Related Subjects

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