Robust ion-transporting ceramic membrane with an internal short circuit for oxygen production

Zhang, Kun, Liu, Lihong, Shao, Zongping, Xu, Rong, da Costa, Jõao C. Diniz, Wang, Shaobin and Liu, Shaomin (2013) Robust ion-transporting ceramic membrane with an internal short circuit for oxygen production. Journal of Materials Chemistry A, 1 32: 9150-9156. doi:10.1039/c3ta11427a

Author Zhang, Kun
Liu, Lihong
Shao, Zongping
Xu, Rong
da Costa, Jõao C. Diniz
Wang, Shaobin
Liu, Shaomin
Title Robust ion-transporting ceramic membrane with an internal short circuit for oxygen production
Journal name Journal of Materials Chemistry A   Check publisher's open access policy
ISSN 2050-7488
Publication date 2013-08-28
Sub-type Article (original research)
DOI 10.1039/c3ta11427a
Open Access Status Not Open Access
Volume 1
Issue 32
Start page 9150
End page 9156
Total pages 7
Place of publication Cambridge, United Kingdom
Publisher R S C Publications
Collection year 2014
Language eng
Formatted abstract
In this work, a novel membrane configuration with an internal short circuit is proposed for air separation based on the fundamental understanding of the working principles of solid oxide fuel cells. The key idea is to use inherently robust ion conducting ceramic membranes to overcome the problem of the low material stability of the existing ceramic membranes under the real application conditions. To experimentally demonstrate this novel design, samarium-doped ceria (SDC) was synthesized and used as the membrane material. Oxygen permeation results clearly demonstrated that one internal short circuit in the membrane was sufficient to enable the membrane to function, thus simplifying the planar membrane design for future scaling up. In addition, the robustness of the membranes was proved by long term exposure to acid gases (CO2 and CO2/H2O) as O2 fluxes reverted back to their original values of 0.4 ml min−1 cm−2 once these acid gases were switched off. Tested under similar conditions, high O2 flux through conventional perovskite membranes failed, thus clearly indicating the potential adaptability of the novel SDC membrane to real world industrial application.
Keyword Hollow-fiber membranes
External short-circuit
Dual-phase membranes
Oxide fuel-cells
Permeable membrane
Intermediate temperatures
CO2 Capture
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2014 Collection
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Citation counts: TR Web of Science Citation Count  Cited 12 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 12 times in Scopus Article | Citations
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