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Article: Thermodynamic analysis of ammonia fed solid oxide fuel cells: Comparison between proton-conducting electrolyte and oxygen ion-conducting electrolyte
Title | Thermodynamic analysis of ammonia fed solid oxide fuel cells: Comparison between proton-conducting electrolyte and oxygen ion-conducting electrolyte | ||||||
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Authors | |||||||
Keywords | Ammonia fuel Electrochemical thermodynamics Electrolyte Proton-conducting ceramics Solid oxide fuel cell (SOFC) | ||||||
Issue Date | 2008 | ||||||
Publisher | Elsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/jpowsour | ||||||
Citation | Journal Of Power Sources, 2008, v. 183 n. 2, p. 682-686 How to Cite? | ||||||
Abstract | A thermodynamic analysis has been performed to compare the theoretical performance of ammonia fed solid oxide fuel cells (SOFCs) based on proton-conducting electrolyte (SOFC-H) and oxygen ion-conducting electrolyte (SOFC-O). It is found that the ammonia fed SOFC-H is superior to SOFC-O in terms of theoretical maximum efficiency. For example, at a fuel utilization of 80% and an oxygen utilization of 20%, the efficiency of ammonia fed SOFC-H is 11% higher than that of SOFC-O. The difference between SOFC-H and SOFC-O becomes more significant at higher fuel utilizations and higher temperatures. This is because an SOFC-H has a higher hydrogen partial pressure and a lower steam partial pressure than an SOFC-O. In addition, an increase in oxygen utilization is found to increase the efficiency of ammonia fed SOFCs due to an increase in oxygen molar fraction and a reduction in steam molar fraction. With further development of new ceramics with high proton conductivity and effective fabrication of thin film electrolyte, the SOFC based on proton-conducting electrolyte is expected to be a promising approach to convert ammonia fuel into electricity. © 2008 Elsevier B.V. All rights reserved. | ||||||
Persistent Identifier | http://hdl.handle.net/10722/59081 | ||||||
ISSN | 2023 Impact Factor: 8.1 2023 SCImago Journal Rankings: 1.857 | ||||||
ISI Accession Number ID |
Funding Information: The authors would like to thank the financial support by the Research Grants Council of Hong Kong, PR China (HKU7150/05E) and the CRCG of the University of Hong Kong. The authors also would like to thank Prof. A.K. Demin (Institute of High Temperature Electrochemistry, Russia) and Prof. Suttichai Assabumrungrat (Chulalongkorn University, Thailand) for discussions and suggestions. | ||||||
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ni, M | en_HK |
dc.contributor.author | Leung, DYC | en_HK |
dc.contributor.author | Leung, MKH | en_HK |
dc.date.accessioned | 2010-05-31T03:42:33Z | - |
dc.date.available | 2010-05-31T03:42:33Z | - |
dc.date.issued | 2008 | en_HK |
dc.identifier.citation | Journal Of Power Sources, 2008, v. 183 n. 2, p. 682-686 | en_HK |
dc.identifier.issn | 0378-7753 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/59081 | - |
dc.description.abstract | A thermodynamic analysis has been performed to compare the theoretical performance of ammonia fed solid oxide fuel cells (SOFCs) based on proton-conducting electrolyte (SOFC-H) and oxygen ion-conducting electrolyte (SOFC-O). It is found that the ammonia fed SOFC-H is superior to SOFC-O in terms of theoretical maximum efficiency. For example, at a fuel utilization of 80% and an oxygen utilization of 20%, the efficiency of ammonia fed SOFC-H is 11% higher than that of SOFC-O. The difference between SOFC-H and SOFC-O becomes more significant at higher fuel utilizations and higher temperatures. This is because an SOFC-H has a higher hydrogen partial pressure and a lower steam partial pressure than an SOFC-O. In addition, an increase in oxygen utilization is found to increase the efficiency of ammonia fed SOFCs due to an increase in oxygen molar fraction and a reduction in steam molar fraction. With further development of new ceramics with high proton conductivity and effective fabrication of thin film electrolyte, the SOFC based on proton-conducting electrolyte is expected to be a promising approach to convert ammonia fuel into electricity. © 2008 Elsevier B.V. All rights reserved. | en_HK |
dc.language | eng | en_HK |
dc.publisher | Elsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/jpowsour | en_HK |
dc.relation.ispartof | Journal of Power Sources | en_HK |
dc.subject | Ammonia fuel | en_HK |
dc.subject | Electrochemical thermodynamics | en_HK |
dc.subject | Electrolyte | en_HK |
dc.subject | Proton-conducting ceramics | en_HK |
dc.subject | Solid oxide fuel cell (SOFC) | en_HK |
dc.title | Thermodynamic analysis of ammonia fed solid oxide fuel cells: Comparison between proton-conducting electrolyte and oxygen ion-conducting electrolyte | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0378-7753&volume=183&spage=682&epage=686&date=2008&atitle=Thermodynamic+analysis+of+ammonia+fed+solid+oxide+fuel+cells:+comparison+between+proton-conducting+electrolyte+and+oxygen+ion-conducting+electrolyte | en_HK |
dc.identifier.email | Leung, DYC: ycleung@hku.hk | en_HK |
dc.identifier.email | Leung, MKH: | en_HK |
dc.identifier.authority | Leung, DYC=rp00149 | en_HK |
dc.identifier.authority | Leung, MKH=rp00148 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.jpowsour.2008.05.022 | en_HK |
dc.identifier.scopus | eid_2-s2.0-48249102783 | en_HK |
dc.identifier.hkuros | 148583 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-48249102783&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 183 | en_HK |
dc.identifier.issue | 2 | en_HK |
dc.identifier.spage | 682 | en_HK |
dc.identifier.epage | 686 | en_HK |
dc.identifier.isi | WOS:000259716600036 | - |
dc.publisher.place | Switzerland | en_HK |
dc.identifier.scopusauthorid | Ni, M=9268339800 | en_HK |
dc.identifier.scopusauthorid | Leung, DYC=7203002484 | en_HK |
dc.identifier.scopusauthorid | Leung, MKH=8862966600 | en_HK |
dc.identifier.issnl | 0378-7753 | - |