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Crystalline boron nitride aerogels

United States Patent

9,840,414
December 12, 2017
View the Complete Patent at the US Patent & Trademark Office
Lawrence Berkeley National Laboratory - Visit the Technology Transfer and Intellectual Property Management Department Website
This disclosure provides methods and materials related to boron nitride aerogels. For example, one aspect relates to a method for making an aerogel comprising boron nitride, comprising: (a) providing boron oxide and an aerogel comprising carbon; (b) heating the boron oxide to melt the boron oxide and heating the aerogel; (c) mixing a nitrogen-containing gas with boron oxide vapor from molten boron oxide; and (d) converting at least a portion of the carbon to boron nitride to obtain the aerogel comprising boron nitride. Another aspect relates to a method for making an aerogel comprising boron nitride, comprising heating boron oxide and an aerogel comprising carbon under flow of a nitrogen-containing gas, wherein boron oxide vapor and the nitrogen-containing gas convert at least a portion of the carbon to boron nitride to obtain the aerogel comprising boron nitride.
Zettl; Alexander K. (Kensington, CA), Rousseas; Michael (Burlingame, CA), Goldstein; Anna P. (Berkeley, CA), Mickelson; William (Albany, CA), Worsley; Marcus A. (Hayward, CA), Woo; Leta (Oakland, CA)
Lawrence Livermore National Security, LLC (Livermore, CA), The Regents of the University of California (Oakland, CA)
15/ 408,297
20170297915
January 17, 2017
STATEMENT OF GOVERNMENT SUPPORT This invention was made with government support under Contract No. DE-AC02-05CH11231 awarded by the U.S. Department of Energy, under Contract No. DE-AC52-07NA27344 awarded by the U.S. Department of Energy, under Grant X10-8049-C awarded by the Air Force Office of Scientific Research. The government has certain rights in this invention.