Doping of carbon foams for use in energy storage devices
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 there between. 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. 3 figs.
- Issue Date:
- OSTI Identifier:
- 6833217
- Assignee:
- Univ. of California, Oakland, CA (United States) PTO; EDB-94-165930
- Patent Number(s):
- US 5358802; A
- Application Number:
- PPN: US 8-041507
- Contract Number:
- W-7405-ENG-48
- Resource Relation:
- Patent File Date: 1 Apr 1993
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE; ANODES; FABRICATION; ELECTRIC BATTERIES; PERFORMANCE TESTING; FOAMS; BATTERY CHARGING; CARBON; DOPED MATERIALS; IMPREGNATION; LITHIUM COMPOUNDS; MATERIALS; PYROLYSIS; VOLTAGE DROP; ALKALI METAL COMPOUNDS; CHEMICAL REACTIONS; COLLOIDS; DECOMPOSITION; DISPERSIONS; ELECTROCHEMICAL CELLS; ELECTRODES; ELEMENTS; NONMETALS; TESTING; THERMOCHEMICAL PROCESSES 250900* -- Energy Storage-- Batteries