Fuel Cells最新文献_第6页

LSF films formed on YSZ electrolytes via polymeric precursor deposition for solid oxide fuel cell anode applications 通过聚合物前驱体沉积在YSZ电解质上形成LSF膜，用于固体氧化物燃料电池阳极

IF 2.8 4区工程技术

Fuel Cells Pub Date : 2023-08-22 DOI: 10.1002/fuce.202300153

Buse Bilbey, M. Asghar, L. C. Arslan, P. Lund, A. Büyükaksoy

{"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}

引用次数: 0

Numerical microstructural optimization for the hydrogen electrode of solid oxide cells 固体氧化物电池氢电极的数值微观结构优化

IF 2.8 4区工程技术

Fuel Cells Pub Date : 2023-08-03 DOI: 10.1002/fuce.202300029

M. Prioux, E. Da Rosa Silva, Maxime Hubert, J. Vulliet, J. Debayle, P. Cloetens, J. Laurencin

{"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}

引用次数: 0

Electrochemical and microstructural characterization of the high‐entropy perovskite La0.2Pr0.2Nd0.2Sm0.2Sr0.2CoO3‐δ for solid oxide cell air electrodes 固体氧化物电池空气电极用高熵钙钛矿La0.2Pr0.2Nd0.2Sm0.2Sr0.2CoO3‐δ的电化学和微观结构表征

IF 2.8 4区工程技术

Fuel Cells Pub Date : 2023-07-27 DOI: 10.1002/fuce.202300036

Patrick Pretschuh, A. Egger, R. Brunner, E. Bucher

引用次数: 0

Erratum 勘误表

IF 2.8 4区工程技术

Fuel Cells Pub Date : 2019-02-04 DOI: 10.1108/ijopm-11-2019-785

M. Cochet, A. Forner‐Cuenca, V. Manzi, M. Siegwart, D. Scheuble, P. Boillat