Fuel Cells Using Low-Temperature Conducting Materials

Tech ID: 11235 / UC Case 2005-510-0


Preparation of Nanometric Oxides that Exhibit Enhanced Protonic Conductivity at Low Temperatures

Full Description

Researchers at the University of California, Davis, have developed a novel method to fabricate nanometric oxides that exhibit enhanced conductivity by a different mechanism. Conduction in these materials (e.g., cubic zirconia and other materials with similar properties) takes place by protonic movement as opposed to ionic mobility, making it possible to operate a fuel cell at much lower temperatures. The marked reduction of the resistivity in these materials at low temperatures are comparable to that typical of other protonic conductors, but with the advantage of superior mechanical properties, chemical stabilities, and the lack of need for a catalyst.

Related Technologies

Suggested uses

Manufacturers of oxide fuel cells and those involved in hydrogen separation.


This method is advantageous in fuel cell technology due to operating at much lower temperatures (i.e., 50 - 100°C), resulting in economic benefits, since many of the existing problems in these types of fuel cells originate from the deleterious effects of high temperature on electrodes and related components.

Related Materials

Patent Status

Country Type Number Dated Case
United States Of America Issued Patent 8,609,565 12/17/2013 2005-510
United States Of America Issued Patent 7,601,403 10/13/2009 2005-510



  • Garay, Javier E.
  • Kim, Sangtae
  • Munir, Zuhair A.

Other Information


nanometric oxides, fuel cells, oxide fuel cells

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