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Title: Composite carbon foam electrode

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 particles 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 resistivty and power to system energy.
Inventors:
 [1];  [2];  [3]
  1. (San Leandro, CA)
  2. (Pleasant Hill, CA)
  3. (Pleasanton, CA)
Issue Date:
OSTI Identifier:
870940
Assignee:
Regents of University of California (Oakland, CA) LLNL
Patent Number(s):
US 5626977
Contract Number:
W-7405-ENG-48
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Country of Publication:
United States
Language:
English
Subject:
composite; carbon; foam; electrode; aerogels; binder; granularized; materials; including; forms; metal; additives; cast; fiber; substrates; form; film; sheets; utilized; electrochemical; energy; storage; applications; double; layer; capacitors; aerocapacitors; lithium; based; battery; insertion; electrodes; fuel; cell; electrocapacitive; deionization; formed; prior; processes; solid; particles; added; liquid; phase; process; gelation; microspheres; powder; aerogel; graphite; carbons; fibers; increased; conductivity; choice; depend; electrolyte; relative; trade; resistivty; power; composite carbon; metal fiber; layer capacitors; fuel cell; chemical energy; layer capacitor; carbon fibers; carbon foam; carbon fiber; solid particles; energy storage; liquid phase; carbon aerogel; double layer; capacitive deionization; carbon aerogels; carbon powder; electrochemical energy; cell electrodes; cell electrode; storage applications; solid particle; carbon microspheres; aerogel powder; film sheets; form composite; metal additives; metal additive; foam electrode; graphite carbon; granularized materials; fiber substrates; /429/252/