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Buried anode lithium thin film battery and process for forming the same

United States Patent

October 19, 2004
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)
Midwest Research Institute (Kansas City, MO)
10/ 110,581
March 17, 2003
CONTRACTUAL ORIGIN OF THE INVENTION The United States Government has rights in this invention pursuant to Contract No. DE-AC36-99GO-10337 between the United States Department of Energy and the Midwest Research Institute.