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Electroless process for depositing refractory metals

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United States Patent

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10,263,241
April 16, 2019
View the Complete Patent at the US Patent & Trademark Office
The invention provides an inexpensive, scalable process for coating materials with a film of a refractory metal. As an example, the immersion process can comprise the deposition of a sacrificial zinc coating which is galvanically displaced by the ether-mediated reduction of oxophilic WCl.sub.6 to form a complex WO.sub.xCl.sub.y film, and subsequently annealed to crystalline, metallic tungsten. The efficacy of this process was demonstrated on a carbon foam electrode, showing a 50% decrease in electrode resistance and significant gains in electrochemical performance. This process enables voltage efficiency gains for electrodes in batteries, redox flow batteries, and industrial processes where high conductivity and chemical stability are paramount.
15/ 374,775
December 9, 2016
1/1
C23C 18/16 (20060101)H01M 4/04 (20060101)C23C 18/54 (20060101)H01M 4/66 (20060101)
STATEMENT OF GOVERNMENT INTEREST This invention was made with Government support under contract no. DE-AC04-94AL85000 awarded by the U. S. Department of Energy to Sandia Corporation. The Government has certain rights in the invention.