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Precursor Infiltration and Coating Method

United States Patent Application

20080193803
A1
View the Complete Application at the US Patent & Trademark Office
Lawrence Berkeley National Laboratory - Visit the Technology Transfer and Intellectual Property Management Department Website
A method of forming a composite (e.g., a mixed electrode) by infiltration of a porous structure (e.g., one formed from an ionically conductive material) with a solution of a precursor (e.g., for an electronically conductive material) results in a particulate layer on and within the porous structure with a single infiltration. The method involves forming a solution comprising at least one metal salt and a surfactant; heating the solution to substantially evaporate solvent and form a concentrated salt and surfactant solution; infiltrating the concentrated solution into a porous structure to create a composite; and heating the composite to substantially decompose the salt and surfactant to oxide and/or metal particles. The result is a particulate layer on the pore walls of the porous structure. In some instances the particulate layer is a continuous network. Corresponding devices have improved properties and performance.
Sholklapper, Tal Z. (West Hills, CA), Jacobson, Craig P. (El Cerrito, CA), Visco, Steven J. (Berkeley, CA), De Jonghe, Lutgard C. (Lafayette, CA)
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA (Oakland CA)
11/ 911,959
April 21, 2006
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0001] This invention was made with government support under Grant (Contract) No. DE-AC02-05CH11231 awarded by The United States Department of Energy. The government has certain rights to this invention.