Doping of carbon foams for use in energy storage devices

Patent · Sat Jan 01 00:00:00 EST 1994

OSTI ID:869574

Mayer, Steven T ^[1]; Pekala, Richard W ^[2]; Morrison, Robert L ^[3]; Kaschmitter, James L ^[4]

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

A polymeric foam precursor, wetted with phosphoric acid, is pyrolyzed in an inert atmosphere to produce an open-cell doped carbon foam, which is utilized as a lithium intercalation anode in a secondary, organic electrolyte battery. Tests were conducted in a cell containing an organic electrolyte and using lithium metal counter and reference electrodes, with the anode located therebetween. Results after charge and discharge cycling, for a total of 6 cycles, indicated a substantial increase in the energy storage capability of the phosphorus doped carbon foam relative to the undoped carbon foam, when used as a rechargeable lithium ion battery.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 5358802
• OSTI ID: 869574
• Country of Publication: United States
• Language: English

Related Subjects

doping
carbon
foams
energy
storage
devices
polymeric
foam
precursor
wetted
phosphoric
acid
pyrolyzed
inert
atmosphere
produce
open-cell
doped
utilized
lithium
intercalation
anode
secondary
organic
electrolyte
battery
tests
conducted
cell
containing
metal
counter
reference
electrodes
located
therebetween
results
charge
discharge
cycling
total
cycles
indicated
substantial
increase
capability
phosphorus
relative
undoped
rechargeable
substantial increase
electrolyte battery
organic electrolyte
carbon foam
storage device
energy storage
phosphoric acid
reference electrode
inert atmosphere
lithium metal
cell containing
storage devices
rechargeable lithium
lithium intercalation
carbon foams
located therebetween
doped carbon
discharge cycling
foam precursor
cell contain
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