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Composite mixed oxide ionic and electronic conductors for hydrogen separation

Patent ·
OSTI ID:988821
 [1];  [2];  [3];  [4]
  1. Westborough, MA
  2. Dover, MA
  3. Quincy, MA
  4. Allston, MA
+ Show Author Affiliations

A mixed ionic and electronic conducting membrane includes a two-phase solid state ceramic composite, wherein the first phase comprises an oxygen ion conductor and the second phase comprises an n-type electronically conductive oxide, wherein the electronically conductive oxide is stable at an oxygen partial pressure as low as 10.sup.-20 atm and has an electronic conductivity of at least 1 S/cm. A hydrogen separation system and related methods using the mixed ionic and electronic conducting membrane are described.

Research Organization:
Trustees of Boston University (Boston, MA)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-03NT41958
Assignee:
Trustees of Boston University (Boston, MA)
Patent Number(s):
7,588,626
Application Number:
11/255,650
OSTI ID:
988821
Country of Publication:
United States
Language:
English

References (9)

The electrochemical performance of LSM/zirconia–yttria interface as a function of a-site non-stoichiometry and cathodic current treatment journal June 1999
Evaluation of La–Sr–Co–Fe–O perovskites for solid oxide fuel cells and gas separation membranes journal November 2000
Oxidation of Hydrogen on Ni/Yttria-Stabilized Zirconia Cermet Anodes journal January 1997
Gd[sub 0.2]Ce[sub 0.8]O[sub 1.9]-Y[sub 0.08]Sr[sub 0.88]Ti[sub 0.95]Al[sub 0.05]O[sub 3+δ] Composite Mixed Conductors for Hydrogen Separation journal January 2005
Polarization Study on Doped Lanthanum Gallate Electrolyte Using Impedance Spectroscopy journal June 2004
Electrocatalytic properties of La 0.9 Sr 0.1 MnO 3 -based electrodes for oxygen reduction journal August 2002
Transfer phenomena in an electrochemical reactor based on mixed oxide conductor journal November 2000
A natural gas-assisted steam electrolyzer for high-efficiency production of hydrogen journal May 2003
Kinetic studies of the reaction at the nickel pattern electrode on YSZ in H2H2O atmospheres journal May 1994

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