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Title: 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.
Inventors:
; ; ;
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