Annealing effect of cermet membranes on hydrogen permeability.
Ni--SrCe{sub 0.8}Yb{sub 0.2}O{sub 3-{delta}} cermet membranes are being developed to separate hydrogen from hydrogen-containing gas mixtures at high temperature. The hydrogen flux of an annealed membrane showed higher flux than that of an as-sintered membrane. The major contribution to overall flux was from ambipolar diffusion through the metal-to-oxide grain boundary. The higher hydrogen permeation flux of an annealed membrane may be understood by its larger metal grains and lower tortuosity, leading to a less-effective length for proton diffusion.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- FE; NETL
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 914916
- Report Number(s):
- CL-060690
- Journal Information:
- Chem. Lett., Journal Name: Chem. Lett. Journal Issue: 12 ; Nov. 11, 2006 Vol. 35; ISSN 0366-7022; ISSN CMLTAG
- Country of Publication:
- United States
- Language:
- ENGLISH
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