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Methods for controlling pore morphology in aerogels using electric fields and products thereof

United States Patent

December 26, 2017
View the Complete Patent at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
In one embodiment, an aerogel or xerogel includes column structures of a material having minor pores therein and major pores devoid of the material positioned between the column structures, where longitudinal axes of the major pores are substantially parallel to one another. In another embodiment, a method includes heating a sol including aerogel or xerogel precursor materials to cause gelation thereof to form an aerogel or xerogel and exposing the heated sol to an electric field, wherein the electric field causes orientation of a microstructure of the sol during gelation, which is retained by the aerogel or xerogel. In one approach, an aerogel has elongated pores extending between a material arranged in column structures having structural characteristics of being formed from a sol exposed to an electric field that causes orientation of a microstructure of the sol during gelation which is retained by the elongated pores of the aerogel.
Worsley; Marcus A. (Hayward, CA), Baumann; Theodore F. (Discovery Bay, CA), Satcher, Jr.; Joe H. (Patterson, CA), Olson; Tammy Y. (Livermore, CA), Kuntz; Joshua D. (Livermore, CA), Rose; Klint A. (Alviso, CA)
Lawrence Livermore National Security, LLC (Livermore, CA)
13/ 180,440
July 11, 2011
The United States Government has rights in this invention pursuant to Contract No. DE-AC52-07NA27344 between the United States Department of Energy and Lawrence Livermore National Security, LLC for the operation of Lawrence Livermore National Laboratory.