Doping of carbon foams for use in energy storage devices

Patent · Fri Dec 31 23:00:00 EST 1993

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
• 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

/429/252/423/
acid
anode
atmosphere
battery
capability
carbon
carbon foam
carbon foams
cell
cell contain
cell containing
charge
conducted
containing
counter
cycles
cycling
devices
discharge
discharge cycling
doped
doped carbon
doping
electrodes
electrolyte
electrolyte battery
energy
energy storage
foam
foam precursor
foams
increase
indicated
inert
inert atmosphere
intercalation
lithium
lithium intercalation
lithium metal
located
located therebetween
metal
open-cell
organic
organic electrolyte
phosphoric
phosphoric acid
phosphorus
polymeric
precursor
produce
pyrolyzed
rechargeable
rechargeable lithium
reference
reference electrode
relative
results
secondary
storage
storage device
storage devices
substantial
substantial increase
tests
therebetween
total
undoped
utilized
wetted