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Chemical stabilization of graphite surfaces

United States Patent

9,932,237
April 3, 2018
View the Complete Patent at the US Patent & Trademark Office
Embodiments of a device, or a component of a device, including a stabilized graphite surface, methods of stabilizing graphite surfaces, and uses for the devices or components are disclosed. The device or component includes a surface comprising graphite, and a plurality of haloaryl ions and/or haloalkyl ions bound to at least a portion of the graphite. The ions may be perhaloaryl ions and/or perhaloalkyl ions. In certain embodiments, the ions are perfluorobenzenesulfonate anions. Embodiments of the device or component including stabilized graphite surfaces may maintain a steady-state oxidation or reduction surface current density after being exposed to continuous oxidation conditions for a period of at least 1-100 hours. The device or component is prepared by exposing a graphite-containing surface to an acidic aqueous solution of the ions under oxidizing conditions. The device or component can be exposed in situ to the solution.
Bistrika; Alexander A. (Corvallis, OR), Lerner; Michael M. (Corvallis, OR), Yokochi; Alexandre F. T. (Corvallis, OR)
Oregeon State University (Corvallis, OR)
14/ 423,391
20150183643
August 23, 2013
ACKNOWLEDGMENT OF GOVERNMENT SUPPORT This invention was made with government support under Cooperative Agreement Number 51286 awarded by the Bonneville Power Administration and DE-FG36-08G018179 awarded by Department of Energy Award. The government has certain rights in the invention.