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Functionalized Graphene-Pt composites for fuel cells and photoelectrochemical cells

United States Patent Application

*** PATENT GRANTED ***
20150247258
9,748,581
A1
View the Complete Application at the US Patent & Trademark Office
A method of growing crystals on two-dimensional layered material is provided that includes reversibly hydrogenating a two-dimensional layered material, using a controlled radio-frequency hydrogen plasma, depositing Pt atoms on the reversibly hydrogenated two-dimensional layered material, using Atomic Layer Deposition (ALD), where the reversibly hydrogenated two-dimensional layered material promotes loss of methyl groups in an ALD Pt precursor, and forming Pt--O on the reversibly hydrogenated two-dimensional layered material, using combustion by O.sub.2, where the Pt--O is used for subsequent Pt half-cycles of the ALD process, where growth of Pt crystals occurs.
Diankov, Georgi (Millbrae, CA), An, Jihwan (Seoul, KR), Park, Joonsuk (Stanford, CA), Goldhaber, David J. K. (Palo Alto, CA), Prinz, Friedrich B. (Woodside, CA)
14/ 634,791
February 28, 2015
STATEMENT OF GOVERNMENT SPONSORED SUPPORT [0002] This invention was made with Government support under contract no. DE-SC0001060 awarded by the Department of Energy. The Government has certain rights in the invention.