A high performance cathode for proton conducting solid oxide fuel cells

Handle URI:
http://hdl.handle.net/10754/563961
Title:
A high performance cathode for proton conducting solid oxide fuel cells
Authors:
Wang, Zhiquan; Yang, Wenqiang; Shafi, Shahid Pottachola; Bi, Lei; Wang, Zhenbin; Peng, Ranran; Xia, Changrong; Liu, Wei; Lu, Yalin
Abstract:
Intermediate temperature solid-oxide fuel cells (IT-SOFCs)), as one of the energy conversion devices, have attracted worldwide interest for their great fuel efficiency, low air pollution, much reduced cost and excellent longtime stability. In the intermediate temperature range (500-700°C), SOFCs based on proton conducting electrolytes (PSOFCs) display unique advantages over those based on oxygen ion conducting electrolytes. A key obstacle to the practical operation of past P-SOFCs is the poor stability of the traditionally used composite cathode materials in the steam-containing atmosphere and their low contribution to proton conduction. Here we report the identification of a new Ruddlesden-Popper-type oxide Sr3Fe2O7-δ that meets the requirements for much improved long-term stability and shows a superior single-cell performance. With a Sr3Fe2O7-δ-5 wt% BaZr0.3Ce0.5Y0.2O3-δ cathode, the P-SOFC exhibits high power densities (683 and 583 mW cm-2 at 700°C and 650°C, respectively) when operated with humidified hydrogen as the fuel and air as the cathode gas. More importantly, no decay in discharging was observed within a 100 hour test. © The Royal Society of Chemistry 2015.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program
Publisher:
Royal Society of Chemistry (RSC)
Journal:
J. Mater. Chem. A
Issue Date:
2015
DOI:
10.1039/c5ta00391a
Type:
Article
ISSN:
20507488
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorWang, Zhiquanen
dc.contributor.authorYang, Wenqiangen
dc.contributor.authorShafi, Shahid Pottacholaen
dc.contributor.authorBi, Leien
dc.contributor.authorWang, Zhenbinen
dc.contributor.authorPeng, Ranranen
dc.contributor.authorXia, Changrongen
dc.contributor.authorLiu, Weien
dc.contributor.authorLu, Yalinen
dc.date.accessioned2015-08-03T12:20:58Zen
dc.date.available2015-08-03T12:20:58Zen
dc.date.issued2015en
dc.identifier.issn20507488en
dc.identifier.doi10.1039/c5ta00391aen
dc.identifier.urihttp://hdl.handle.net/10754/563961en
dc.description.abstractIntermediate temperature solid-oxide fuel cells (IT-SOFCs)), as one of the energy conversion devices, have attracted worldwide interest for their great fuel efficiency, low air pollution, much reduced cost and excellent longtime stability. In the intermediate temperature range (500-700°C), SOFCs based on proton conducting electrolytes (PSOFCs) display unique advantages over those based on oxygen ion conducting electrolytes. A key obstacle to the practical operation of past P-SOFCs is the poor stability of the traditionally used composite cathode materials in the steam-containing atmosphere and their low contribution to proton conduction. Here we report the identification of a new Ruddlesden-Popper-type oxide Sr3Fe2O7-δ that meets the requirements for much improved long-term stability and shows a superior single-cell performance. With a Sr3Fe2O7-δ-5 wt% BaZr0.3Ce0.5Y0.2O3-δ cathode, the P-SOFC exhibits high power densities (683 and 583 mW cm-2 at 700°C and 650°C, respectively) when operated with humidified hydrogen as the fuel and air as the cathode gas. More importantly, no decay in discharging was observed within a 100 hour test. © The Royal Society of Chemistry 2015.en
dc.publisherRoyal Society of Chemistry (RSC)en
dc.titleA high performance cathode for proton conducting solid oxide fuel cellsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.identifier.journalJ. Mater. Chem. Aen
dc.contributor.institutionCAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of ChinaHefei, Anhui, Chinaen
dc.contributor.institutionSynergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of ChinaHefei, Anhui, Chinaen
dc.contributor.institutionHefei National Laboratory of Physical Science at the Microscale, University of Science and Technology of ChinaHefei, Anhui, Chinaen
kaust.authorShafi, Shahid Pottacholaen
kaust.authorBi, Leien
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