Capacitor with a composite carbon foam electrode

Details Capacitor with a composite carbon foam electrode Capacitor with a composite carbon foam electrode

1996-12-02

1999-04-27

Kincaid, Kristine

Electricity: electrical systems and devices

Electrolytic systems or devices

Liquid electrolytic capacitor

361516, 361528, 361532, 429 44, H01G 904

Patent

active

058985646

ABSTRACT:
Carbon aerogels used as a binder for granularized materials, including other forms of carbon and metal additives, are cast onto carbon or metal fiber substrates to form composite carbon thin film sheets. The thin film sheets are utilized in electrochemical energy storage applications, such as electrochemical double layer capacitors (aerocapacitors), lithium based battery insertion electrodes, fuel cell electrodes, and electrocapacitive deionization electrodes. The composite carbon foam may be formed by prior known processes, but with the solid partides being added during the liquid phase of the process, i.e. prior to gelation. The other forms of carbon may include carbon microspheres, carbon powder, carbon aerogel powder or particles, graphite carbons. Metal and/or carbon fibers may be added for increased conductivity. The choice of materials and fibers will depend on the electrolyte used and the relative trade off of system resistivity and power to system energy.

REFERENCES:
patent: 4806290 (1989-02-01), Hopper et al.
patent: 5260855 (1993-11-01), Kaschmitter et al.
patent: 5476878 (1995-12-01), Pekala

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