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Thin film buried anode battery

United States Patent

December 15, 2009
View the Complete Patent at the US Patent & Trademark Office
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A reverse configuration, lithium thin film battery (300) having a buried lithium anode layer (305) and process for making the same. The present invention is formed from a precursor composite structure (200) made by depositing electrolyte layer (204) onto substrate (201), followed by sequential depositions of cathode layer (203) and current collector (202) on the electrolyte layer. The precursor is subjected to an activation step, wherein a buried lithium anode layer (305) is formed via electroplating a lithium anode layer at the interface of substrate (201) and electrolyte film (204). The electroplating is accomplished by applying a current between anode current collector (201) and cathode current collector (202).
Lee; Se-Hee (Lakewood, CO), Tracy; C. Edwin (Golden, CO), Liu; Ping (Denver, CO)
Alliance For Sustainable Energy, LLC (Golden, CO)
10/ 901,863
July 29, 2004
CONTRACTUAL ORIGIN OF THE INVENTION The United States Government has rights in this invention pursuant to Contract No. DE-AC-36-99G010337 between the United States Department of Energy and The Midwest Research Institute.