Title: Ion-/proton-conducting apparatus and method

Abstract

A c-axis-oriented HAP thin film synthesized by seeded growth on a palladium hydrogen membrane substrate. An exemplary synthetic process includes electrochemical seeding on the substrate, and secondary and tertiary hydrothermal treatments under conditions that favor growth along c-axes and a-axes in sequence. By adjusting corresponding synthetic conditions, an HAP this film can be grown to a controllable thickness with a dense coverage on the underlying substrate. The thin films have relatively high proton conductivity under hydrogen atmosphere and high temperature conditions. The c-axis oriented films may be integrated into fuel cells for application in the intermediate temperature range of 200-600.degree. C. The electrochemical-hydrothermal deposition technique may be applied to create other oriented crystal materials having optimized properties, useful for separations and catalysis as well as electronic and electrochemical applications, electrochemical membrane reactors, and in chemical sensors.

Inventors:

Yates, Matthew ^[1]; Liu, Dongxia ^[2]

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+ Show Inventor Affiliations

1. Penfield, NY
2. Rochester, NY

Issue Date:

Tue May 17 00:00:00 EDT 2011

Research Org.:

Univ. of Rochester, NY (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1021433

Patent Number(s):

7943269

Application Number:

12/392,150

Assignee:

University of Rochester (Rochester, NY)

Patent Classifications (CPCs):

C - CHEMISTRY C30 - CRYSTAL GROWTH C30B - SINGLE-CRYSTAL-GROWTH

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

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C - CHEMISTRY C30 - CRYSTAL GROWTH C30B - SINGLE-CRYSTAL-GROWTH

C30B29/14 - Phosphates

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

H01M2008/1293 - {Fuel cells with solid oxide electrolytes}
H01M8/1004 - characterised by membrane-electrode assemblies [MEA]
H01M8/1016 - characterised by the electrolyte material

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

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DOE Contract Number:  

FG02-05ER15722; FC03-92SF19460

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

47 OTHER INSTRUMENTATION