Method of preparation of carbon materials for use as electrodes in rechargeable batteries
- Alburquerque, NM
- Livermore, CA
- Fremont, CA
- Dayton, OH
A method of producing carbon materials for use as electrodes in rechargeable batteries. Electrodes prepared from these carbon materials exhibit intercalation efficiencies of .apprxeq.80% for lithium, low irreversible loss of lithium, long cycle life, are capable of sustaining a high rates of discharge and are cheap and easy to manufacture. The method comprises a novel two-step stabilization process in which polymeric precursor materials are stabilized by first heating in an inert atmosphere and subsequently heating in air. During the stabilization process, the polymeric precursor material can be agitated to reduce particle fusion and promote mass transfer of oxygen and water vapor. The stabilized, polymeric precursor materials can then be converted to a synthetic carbon, suitable for fabricating electrodes for use in rechargeable batteries, by heating to a high temperature in a flowing inert atmosphere.
- Research Organization:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- DOE Contract Number:
- AC04-94AL85000
- Assignee:
- Sandia Corporation (Albuquerque, NM)
- Patent Number(s):
- US 5882621
- OSTI ID:
- 872194
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
preparation
carbon
materials
electrodes
rechargeable
batteries
producing
prepared
exhibit
intercalation
efficiencies
apprxeq
80
lithium
irreversible
loss
cycle
life
capable
sustaining
rates
discharge
cheap
easy
manufacture
comprises
novel
two-step
stabilization
process
polymeric
precursor
stabilized
heating
inert
atmosphere
subsequently
air
material
agitated
reduce
particle
fusion
promote
mass
transfer
oxygen
water
vapor
converted
synthetic
suitable
fabricating
temperature
flowing
rechargeable batteries
carbon materials
cycle life
reduce particle
method comprises
water vapor
inert atmosphere
mass transfer
precursor material
carbon material
precursor materials
subsequently heating
method comprise
flowing inert
producing carbon
synthetic carbon
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