Hydrogen permeability and effect microstructure on mixed protonic-electronic conducting Eu-doped strontium cerate.
The hydrogen permeability of SrCe{sup 0.95}Eu{sup 0.05}O{sup 3-{delta}} was studied as a function of temperature, hydrogen partial pressure (P{sup H2}) gradient, and water vapor partial pressure (P{sup H2O}) gradient. The effect of the microstructure on hydrogen permeability through a 1.72 mm thick membrane was investigated. The ambipolar conductivity calculated from hydrogen permeation fluxes showed the same P{sup O2} and P{sup H2} dependence as the electronic conductivity, for the experimental conditions. The small grained membrane showed higher hydrogen permeability when compared with the larger grained membrane over the entire temperature range investigated.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- NETL; NASA; FE
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 961479
- Report Number(s):
- ANL/ET/JA-48241
- Journal Information:
- J. Mater. Sci., Journal Name: J. Mater. Sci. Journal Issue: 15 ; Aug. 2005 Vol. 40; ISSN JMTSAS; ISSN 0022-2461
- Country of Publication:
- United States
- Language:
- ENGLISH
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