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Method of producing a durable electrochemical cell

United States Patent Application

20020076616
A1
View the Complete Application at the US Patent & Trademark Office
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The invention provides a method of protecting an ion insertion material from the degradative effects of a liquid or gel-type electrolyte material by disposing a protective, solid ion conducting, electrically insulating, layer between the ion insertion layer and the liquid or gel-type electrolyte material. The invention further provides liquid or gel-type electrochemical cells having improved durability having a pair of electrodes, a pair of ion insertion layers sandwiched between the pair of electrodes, a pair of solid ion conducting layers sandwiched between the ion insertion layers, and a liquid or gel-type electrolyte material disposed between the solid ion conducting layers, where the solid ion conducting layer minimizes or prevents degradation of the faces of the ion insertion materials facing the liquid or gel-type electrolyte material. Electrochemical cells of this invention having increased durability include secondary lithium batteries and electrochromic devices.
Lee, Se-Hee (Lakewood, CO), Tracy, C. Edwin (Golden, CO), Cheong, Hyeonsik M. (Seoul, KR)
10/ 060,704
January 29, 2002
[0002] The United States Government has rights in this invention pursuant to Contract No. DE-AC36-99G010337 between the United States Department of Energy and the Midwest Research Institute.