Sandia Corporation

Andrew M Hecht

Stanley H Kravitz

Alan P Sylwester

Nelson S Bell

Thomas E Zipperian

Tom Klitsner

Gail N Ryba

A compact solid source of hydrogen gas, where the gas is generated by contacting water with micro-disperse particles of sodium borohydride in the presence of a catalyst, such as cobalt or ruthenium. The micro-disperse particles can have a substantially uniform diameter of 1-10 microns, and preferably about 3-5 microns. Ruthenium or cobalt catalytic nanoparticles can be incorporated in the micro-disperse particles of sodium borohydride, which allows a rapid and complete reaction to occur without the problems associated with caking and scaling of the surface by the reactant product sodium metaborate. A closed loop water management system can be used to recycle wastewater from a PEM fuel cell to supply water for reacting with the micro-disperse particles of sodium borohydride in a compact hydrogen gas generator. Capillary forces can wick water from a water reservoir into a packed bed of micro-disperse fuel particles, eliminating the need for using an active pump.

Method of manufacturing micro-disperse particles of sodium borohydride

Method of generating hydrogen gas from sodium borohydride

Fuel cells and a novel membrane for use in fuel cells and manufacturing processes.

Fuel cell and membrane

Compact solid source of hydrogen gas

Growing community of inventors

Sandia Park, NM, United States of America

Andrew M Hecht