Buse Bilbey, M. Asghar, L. C. Arslan, P. Lund, A. Büyükaksoy
Different materials have been applied as anode in solid oxide fuel cell (SOFC). Perovskite structured materials are promising as an alternative electrode material to Ni. Here, we investigated perovskite‐structured mixed ionic and electronic conducting material, lanthanum strontium ferrite (LSF), which has typically been used as a cathode material. LSF has also shown potential for an anode in SOFC. LSF films with two different compositions, La0.6Sr0.4FeO3 (6LSF) and La0.8Sr0.2FeO3 (8LSF) were fabricated by a polymeric precursor method. The effects of the phase content, surface chemistry, and microstructure on the anode performance were investigated. It was found that a mixture of the Ruddlesden–Popper phase, SrCO3 phases, and rhombohedral perovskite exists in both cell structures. Both cells had Ruddlesden–Popper and SrCO3 phases at their surface, in addition to the rhombohedral perovskite. Symmetrical half‐cell measurements showed that the polarization resistance of 6LSF (0.34 Ω cm2) is lower than that of 8LSF (0.47 Ω cm2), mostly because of its highly porous microstructure as a result of slower A‐site diffusion rates induced by higher Sr content.The symmetrical 6LSF fuel and air electrodes exhibited ASRelectrode values of 0.34 and 0.14 Ω cm2, respectively, at 800 ˚C.
{"title":"LSF films formed on YSZ electrolytes via polymeric precursor deposition for solid oxide fuel cell anode applications","authors":"Buse Bilbey, M. Asghar, L. C. Arslan, P. Lund, A. Büyükaksoy","doi":"10.1002/fuce.202300153","DOIUrl":"https://doi.org/10.1002/fuce.202300153","url":null,"abstract":"Different materials have been applied as anode in solid oxide fuel cell (SOFC). Perovskite structured materials are promising as an alternative electrode material to Ni. Here, we investigated perovskite‐structured mixed ionic and electronic conducting material, lanthanum strontium ferrite (LSF), which has typically been used as a cathode material. LSF has also shown potential for an anode in SOFC. LSF films with two different compositions, La0.6Sr0.4FeO3 (6LSF) and La0.8Sr0.2FeO3 (8LSF) were fabricated by a polymeric precursor method. The effects of the phase content, surface chemistry, and microstructure on the anode performance were investigated. It was found that a mixture of the Ruddlesden–Popper phase, SrCO3 phases, and rhombohedral perovskite exists in both cell structures. Both cells had Ruddlesden–Popper and SrCO3 phases at their surface, in addition to the rhombohedral perovskite. Symmetrical half‐cell measurements showed that the polarization resistance of 6LSF (0.34 Ω cm2) is lower than that of 8LSF (0.47 Ω cm2), mostly because of its highly porous microstructure as a result of slower A‐site diffusion rates induced by higher Sr content.The symmetrical 6LSF fuel and air electrodes exhibited ASRelectrode values of 0.34 and 0.14 Ω cm2, respectively, at 800 ˚C.","PeriodicalId":12566,"journal":{"name":"Fuel Cells","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47195698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Prioux, E. Da Rosa Silva, Maxime Hubert, J. Vulliet, J. Debayle, P. Cloetens, J. Laurencin
A multiscale model has been used to optimize the microstructure of a classical hydrogen electrode made of nickel and yttria‐stabilized zirconia (Ni‐8YSZ). For this purpose, a 3D reconstruction of a reference electrode has been obtained by X‐ray nano‐holotomography. Then, a large dataset of synthetic microstructures has been generated around this reference with the truncated Gaussian random field method, varying the ratio Ni/8YSZ and the Ni particle size. All the synthetic microstructures have been introduced in a multiscale modeling approach to analyze the impact of the microstructure on the electrode and cell responses. The local electrode polarization resistance in the hydrogen electrode, as well as the complete cell impedance spectra, have been computed for the different microstructures. A significant performance improvement was found when decreasing the Ni particle size distribution. Moreover, an optimum has been identified in terms of electrode composition allowing the minimization of the cell polarization resistance. The same methodology has been also applied to assess the relevance of graded electrodes. All these results allow a better understanding of the precise role of microstructure on cell performances and provide useful guidance for cell manufacturing.
{"title":"Numerical microstructural optimization for the hydrogen electrode of solid oxide cells","authors":"M. Prioux, E. Da Rosa Silva, Maxime Hubert, J. Vulliet, J. Debayle, P. Cloetens, J. Laurencin","doi":"10.1002/fuce.202300029","DOIUrl":"https://doi.org/10.1002/fuce.202300029","url":null,"abstract":"A multiscale model has been used to optimize the microstructure of a classical hydrogen electrode made of nickel and yttria‐stabilized zirconia (Ni‐8YSZ). For this purpose, a 3D reconstruction of a reference electrode has been obtained by X‐ray nano‐holotomography. Then, a large dataset of synthetic microstructures has been generated around this reference with the truncated Gaussian random field method, varying the ratio Ni/8YSZ and the Ni particle size. All the synthetic microstructures have been introduced in a multiscale modeling approach to analyze the impact of the microstructure on the electrode and cell responses. The local electrode polarization resistance in the hydrogen electrode, as well as the complete cell impedance spectra, have been computed for the different microstructures. A significant performance improvement was found when decreasing the Ni particle size distribution. Moreover, an optimum has been identified in terms of electrode composition allowing the minimization of the cell polarization resistance. The same methodology has been also applied to assess the relevance of graded electrodes. All these results allow a better understanding of the precise role of microstructure on cell performances and provide useful guidance for cell manufacturing.","PeriodicalId":12566,"journal":{"name":"Fuel Cells","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47495214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Patrick Pretschuh, A. Egger, R. Brunner, E. Bucher
{"title":"Electrochemical and microstructural characterization of the high‐entropy perovskite La0.2Pr0.2Nd0.2Sm0.2Sr0.2CoO3‐δ for solid oxide cell air electrodes","authors":"Patrick Pretschuh, A. Egger, R. Brunner, E. Bucher","doi":"10.1002/fuce.202300036","DOIUrl":"https://doi.org/10.1002/fuce.202300036","url":null,"abstract":"","PeriodicalId":12566,"journal":{"name":"Fuel Cells","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45216817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-02-04DOI: 10.1108/ijopm-11-2019-785
M. Cochet, A. Forner‐Cuenca, V. Manzi, M. Siegwart, D. Scheuble, P. Boillat
In this review the author stated that in the case-control study of childhood leukemia by Myers et al. (1), "their primary control group consisted of children with solid tissue tumors" which may also be associated with magnetic fields. This is erroneous: their control group consisted of children randomly selected from the population, which is appropriate in such studies. Rather, it was Coleman et al. (2) who enrolled patients with solid tissue tumor as controls for their leukemia cases. 1. Myers A, Clayden AD, Cartwright RA, Cartwright SC. Childhood cancer and overhead powerlines: a case-control study. Br J Cancer 62: 1008-1014 (1990). 2. Coleman MP, Bell CMJ, Taylor H-L, Primic-Zakelj M. Leukemia and residence near electricity transmission equipment: a case-control study. Br J Cancer 60: 793-798 (1989).
{"title":"Erratum","authors":"M. Cochet, A. Forner‐Cuenca, V. Manzi, M. Siegwart, D. Scheuble, P. Boillat","doi":"10.1108/ijopm-11-2019-785","DOIUrl":"https://doi.org/10.1108/ijopm-11-2019-785","url":null,"abstract":"In this review the author stated that in the case-control study of childhood leukemia by Myers et al. (1), \"their primary control group consisted of children with solid tissue tumors\" which may also be associated with magnetic fields. This is erroneous: their control group consisted of children randomly selected from the population, which is appropriate in such studies. Rather, it was Coleman et al. (2) who enrolled patients with solid tissue tumor as controls for their leukemia cases. 1. Myers A, Clayden AD, Cartwright RA, Cartwright SC. Childhood cancer and overhead powerlines: a case-control study. Br J Cancer 62: 1008-1014 (1990). 2. Coleman MP, Bell CMJ, Taylor H-L, Primic-Zakelj M. Leukemia and residence near electricity transmission equipment: a case-control study. Br J Cancer 60: 793-798 (1989).","PeriodicalId":12566,"journal":{"name":"Fuel Cells","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2019-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1108/ijopm-11-2019-785","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44780313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2002-08-15DOI: 10.1002/1615-6854(20020815)2:1<10::AID-FUCE10>3.0.CO;2-#
M. Arita
Fuel cell systems are seen as the ultimate solution to environmental issues such as CO2 emissions and air pollution. There is much current work aimed at developing FC vehicles (FCVs), which are expected to be on the market around 2003. However, in order to achieve widespread use of FCVs, they will need to provide the same performance, cost, and reliability as vehicles with internal combustion engines and hybrid electric vehicles. It is estimated that hydrogen FCVs can achieve the lowest CO2 emissions while reformate FCVs can attain the same level as diesel hybrid electric vehicles. The important technical issues of the FC stack system involve improving the efficiency and start ability at temperatures below 0 °C. The central technical issues of the reformate system are to improve efficiency and reduce start-up time. The most critical challenge for the popularization of FCVs is to achieve cost reductions and performance improvements simultaneously.
{"title":"Technical Issues of Fuel Cell Systems for Automotive Application","authors":"M. Arita","doi":"10.1002/1615-6854(20020815)2:1<10::AID-FUCE10>3.0.CO;2-#","DOIUrl":"https://doi.org/10.1002/1615-6854(20020815)2:1<10::AID-FUCE10>3.0.CO;2-#","url":null,"abstract":"Fuel cell systems are seen as the ultimate solution to environmental issues such as CO2 emissions and air pollution. There is much current work aimed at developing FC vehicles (FCVs), which are expected to be on the market around 2003. However, in order to achieve widespread use of FCVs, they will need to provide the same performance, cost, and reliability as vehicles with internal combustion engines and hybrid electric vehicles. It is estimated that hydrogen FCVs can achieve the lowest CO2 emissions while reformate FCVs can attain the same level as diesel hybrid electric vehicles. The important technical issues of the FC stack system involve improving the efficiency and start ability at temperatures below 0 °C. The central technical issues of the reformate system are to improve efficiency and reduce start-up time. The most critical challenge for the popularization of FCVs is to achieve cost reductions and performance improvements simultaneously.","PeriodicalId":12566,"journal":{"name":"Fuel Cells","volume":"10 19","pages":"10-14"},"PeriodicalIF":2.8,"publicationDate":"2002-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/1615-6854(20020815)2:1<10::AID-FUCE10>3.0.CO;2-#","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50763414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：