Steven A Poling

US Patent:

7018604, Mar 28, 2006

Filed:

Jul 25, 2003

Appl. No.:

10/627584

Inventors:

Steven A. Poling - Ames IA, US
Steve W. Martin - Ames IA, US
Jacob T. Sutherland - Ames IA, US

Assignee:

Iowa State University Research Foundation Inc - Ames IA

International Classification:

C01B 17/00
H01B 1/10
C01G 17/00

US Classification:

423560, 2525194, 4235949

Abstract:

The present invention provides new compounds for use in proton exchange membranes which are able to operate in a wide variety of temperature ranges, including in the intermediate temperature range of about 100 C. to 700 C. , and new and improved methods of making these compounds. The present invention also provides new and improved methods for making chalcogenide compounds, including, but not limited to, non-protonated sulfide, selenide and telluride compounds. In one embodiment, the proton conductivity of the compounds is between about 10S/cm and 10S/cm within a temperature range of between about −50 and 500 C.

US Patent:

7101527, Sep 5, 2006

Filed:

May 19, 2004

Appl. No.:

10/848967

Inventors:

Steven Andrew Poling - Moorefield WV, US
Carly R. Nelson - Ames IA, US
Steve W. Martin - Ames IA, US

Assignee:

Iowa State University Research Foundation, Inc. - Ames IA

International Classification:

C01B 17/00
C01D 13/00
C01G 17/00

US Classification:

4235921, 4235931, 423508, 423511, 4235121, 423518, 423618, 423263

Abstract:

The present invention provides new amorphous or partially crystalline mixed anion chalcogenide compounds for use in proton exchange membranes which are able to operate over a wide variety of temperature ranges, including in the intermediate temperature range of about 100 C. to 300 C. , and new uses for crystalline mixed anion chalcogenide compounds in such proton exchange membranes. In one embodiment, the proton conductivity of the compounds is between about 10S/cm and 10S/cm within a temperature range of between about −60 and 300 C. and a relative humidity of less than about 12%.