A new charge storage mechanism for electrochemical capacitors

Journal Article · Sat Dec 31 23:00:00 EST 1994 · Journal of the Electrochemical Society; (United States)

DOI:https://doi.org/10.1149/1.2043984· OSTI ID:6559524

Zheng, J P; Jow, T R ^[1]

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1. Army Research Lab., Fort Monmouth, NJ (United States). Electronics and Power Sources Directorate

The hydrous form of ruthenium oxide (RuO[sub 2][center dot]xH[sub 2]O) has been demonstrated to be an excellent electrode material for electrochemical capacitors. This material, as prepared by a sol-gel process at low temperatures, is amorphous and electrically conductive. The specific capacitance is over 720 F/g. This value is at least two times higher than the highest value ever reported for such materials. The charge storage mechanism is believed to involve bulk electrochemical protonation of the oxide. This discovery opens a new avenue of research in the field of high energy density electrochemical capacitors.

• OSTI ID: 6559524
• Journal Information: Journal of the Electrochemical Society; (United States), Journal Name: Journal of the Electrochemical Society; (United States) Vol. 142:1; ISSN 0013-4651; ISSN JESOAN
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250400* -- Energy Storage-- Capacitor Banks
36 MATERIALS SCIENCE
360606 -- Other Materials-- Physical Properties-- (1992-)
CAPACITIVE ENERGY STORAGE EQUIPMENT
CHALCOGENIDES
CHEMISTRY
COHERENT SCATTERING
CRYSTAL STRUCTURE
DATA
DIFFRACTION
ELECTRICAL PROPERTIES
ELECTROCHEMISTRY
ELECTRODES
EQUIPMENT
EXPERIMENTAL DATA
HYDRATES
INFORMATION
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
REFRACTORY METAL COMPOUNDS
RUTHENIUM COMPOUNDS
RUTHENIUM OXIDES
SCATTERING
SURFACE AREA
SURFACE PROPERTIES
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION