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Low contaminant formic acid fuel for direct liquid fuel cell

United States Patent

November 17, 2009
View the Complete Patent at the US Patent & Trademark Office
A low contaminant formic acid fuel is especially suited toward use in a direct organic liquid fuel cell. A fuel of the invention provides high power output that is maintained for a substantial time and the fuel is substantially non-flammable. Specific contaminants and contaminant levels have been identified as being deleterious to the performance of a formic acid fuel in a fuel cell, and embodiments of the invention provide low contaminant fuels that have improved performance compared to known commercial bulk grade and commercial purified grade formic acid fuels. Preferred embodiment fuels (and fuel cells containing such fuels) including low levels of a combination of key contaminants, including acetic acid, methyl formate, and methanol.
Masel; Richard I. (Champaign, IL), Zhu; Yimin (Urbana, IL), Kahn; Zakia (Palatine, IL), Man; Malcolm (Vancouver, CA)
The Board of Trustees of the University of Illinois (Urbana, IL)
11/ 079,893
March 14, 2005
STATEMENT OF GOVERNMENT INTEREST This invention was made with Government assistance under Department of Energy Grant No. DEGF-02-99ER14993. The Government has certain rights in the invention.