Journal
CERAMICS INTERNATIONAL
Volume 45, Issue 8, Pages 10120-10125Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2019.02.059
Keywords
Ceramic-metal membrane; Hydrogen separation; Protonic conductor; Dual phase
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Funding
- National Natural Science Foundation of China [21706076, 51621001, 21536005]
- Guangzhou Technology Project [201804010210]
- State Key Laboratory of Pulp and Paper Engineering [201835]
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Adding metal phase as the electronic transport channels in mixed protonic and electronic conductors is an effective method to enhance the conductivity and hydrogen permeability. Ceramic-metal (cermet) Ni-BaCe0.85Fe0.15O3-delta (Ni-BCF8515) dual-phase membranes were successfully fabricated in this article, where BaCe0.85Fe0.15O3-delta (BCF8515) served as the protonic conductor and Ni acted as the electronic conductor. The hydrogen permeability of Ni-BCF8515 dual-phase membrane was improved apparently, reaching 0.325 mL min(-1) cm(-2) at 1000 degrees C, which is four times higher than that of the single phase BCF8515 membrane. Hydrogen permeability of Ni-BCF8515 dual-phase membrane under different hydration conditions was studied here. Moreover, Ni-BCF8515 dual-phase membrane showed stable hydrogen permeability under the reducing atmosphere for 50 h.
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