Title: Mixed anion materials and compounds for novel proton conducting membranes

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 10^-8 S/cm and 10^-1 S/cm within a temperature range of between about -60 and 300°C. and a relative humidity of less than about 12%..

Inventors:

Poling, Steven Andrew; Nelson, Carly R.; Martin, Steve W.

Issue Date:

2006-09-05

Research Org.:

Iowa State Univ., Ames, IA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1175901

Patent Number(s):

7101527

Application Number:

10/848,967

Assignee:

Iowa State University Research Foundation, Inc. (Ames, IA)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

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B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D2325/26 - Electrical properties
B01D2325/42 - Ion-exchange membranes
B01D67/0041 - {by agglomeration of particles in the dry state, e.g. sintering}
B01D67/0079 - {Formation of membranes comprising organic and inorganic components}
B01D71/02 - Inorganic material
B01D71/04 - Glass

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

C01B3/503 - {characterised by the membrane}

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F

C01G17/00 - Compounds of germanium

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

C01P2002/72 - by d-values or two theta-values, e.g. as X-ray diagram
C01P2002/82 - by IR- or Raman-data
C01P2002/88 - by thermal analysis data, e.g. TGA, DTA, DSC

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

H01M8/1016 - characterised by the electrolyte material
H01M8/124 - characterised by the process of manufacturing or by the material of the electrolyte
H01M8/1246 - the electrolyte consisting of oxides

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Y02E60/50 - Fuel cells

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

Y02P70/50 - Manufacturing or production processes characterised by the final manufactured product

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DOE Contract Number:  

FC36-00GO10531

Resource Type:

Patent

Resource Relation:

Patent File Date: 2004 May 19

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE