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Method and apparatus for electrokinetic co-generation of hydrogen and electric power from liquid water microjets

United States Patent

February 12, 2013
View the Complete Patent at the US Patent & Trademark Office
Lawrence Berkeley National Laboratory - Visit the Technology Transfer and Intellectual Property Management Department Website
A method and apparatus for producing both a gas and electrical power from a flowing liquid, the method comprising: a) providing a source liquid containing ions that when neutralized form a gas; b) providing a velocity to the source liquid relative to a solid material to form a charged liquid microjet, which subsequently breaks up into a droplet spay, the solid material forming a liquid-solid interface; and c) supplying electrons to the charged liquid by contacting a spray stream of the charged liquid with an electron source. In one embodiment, where the liquid is water, hydrogen gas is formed and a streaming current is generated. The apparatus comprises a source of pressurized liquid, a microjet nozzle, a conduit for delivering said liquid to said microjet nozzle, and a conductive metal target sufficiently spaced from said nozzle such that the jet stream produced by said microjet is discontinuous at said target. In one arrangement, with the metal nozzle and target electrically connected to ground, both hydrogen gas and a streaming current are generated at the target as it is impinged by the streaming, liquid spray microjet.
Saykally; Richard J. (Piedmont, CA), Duffin; Andrew M. (Oakland, CA), Wilson; Kevin R. (Oakland, CA), Rude; Bruce S. (Berkeley, CA)
The Regents of the University of California (Oakland, CA)
12/ 529,884
March 5, 2008
STATEMENT OF GOVERNMENTAL SUPPORT This invention was made with US Government support under Contract DE-AC0205CH11231 awarded by the United States Department of Energy to The Regents of the University of California for the management and operation of the Lawrence Berkeley National Laboratory, and Contract No. CHE-0404571 between the National Science Foundation and The Regents of the University of California. The US Government has certain rights in this invention.