Method for fabricating composite carbon foam

Patent · Mon Jan 01 00:00:00 EST 2001

OSTI ID:874186

Mayer, Steven T ^[1]; Pekala, Richard W ^[2]; Kaschmitter, James L ^[3]

---

1. San Leandro, CA
2. Pleasant Hill, CA
3. Pleasanton, CA

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 resistivity and power to system energy.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: The Regents of the University of California (Oakland, CA)
• Patent Number(s): US 6332990
• OSTI ID: 874186
• Country of Publication: United States
• Language: English

Related Subjects

method
fabricating
composite
carbon
foam
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
andor
fibers
increased
conductivity
choice
depend
electrolyte
trade
resistivity
power
fuel cell
energy storage
liquid phase
carbon fiber
capacitive deionization
metal fiber
form composite
/252/423/429/502/