Tailoring Electrocatalytic Properties of Solid Oxide Fuel Cell Composite Cathodes Based on (La0.8Sr0.2)(0.95)MnO3+delta and Doped Cerias Ce(1 x)Ln(x)O(2 delta) (Ln=Gd, La, Er, Pr, Tb and x=0.1 0.2)
[EN] Composites made of different doped cerias and (La0.8Sr0.2)(0.95)MnO3+ were studied as potential solid oxide fuel cell cathodes. Tb, Pr, Gd and Er have been introduced as ceria dopants to enhance the electrocatalytic properties of (La0.8Sr0.2)(0.95)MnO3+ composites fabricated within. Different e...
| Authors: | ; ; ; |
|---|---|
| Format: | Article |
| Publication date: | 2017 |
| Country: | España |
| Institution: | Universitat Politècnica de València (UPV) |
| Repository: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Language: | English |
| OAI Identifier: | oai:riunet.upv.es:10251/108054 |
| Online Access: | https://riunet.upv.es/handle/10251/108054 |
| Access Level: | Open access |
| Keyword: | Cathode Composite Doped Cerias LSM Praseodymium SOFC |
| _version_ | 1878740003753820160 |
|---|---|
| author | Navarrete Algaba, Laura |
| author2 | Vert Belenguer, Vicente Bernardo Balaguer Ramirez, Maria|||0000-0002-7098-9235 Serra Alfaro, José Manuel|||0000-0002-1515-1106 |
| author2_role | author author author |
| author_browse | Balaguer Ramirez, Maria|||0000-0002-7098-9235 Navarrete Algaba, Laura Serra Alfaro, José Manuel|||0000-0002-1515-1106 Vert Belenguer, Vicente Bernardo |
| author_facet | Navarrete Algaba, Laura Vert Belenguer, Vicente Bernardo Balaguer Ramirez, Maria|||0000-0002-7098-9235 Serra Alfaro, José Manuel|||0000-0002-1515-1106 |
| author_role | author |
| collection | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| description | [EN] Composites made of different doped cerias and (La0.8Sr0.2)(0.95)MnO3+ were studied as potential solid oxide fuel cell cathodes. Tb, Pr, Gd and Er have been introduced as ceria dopants to enhance the electrocatalytic properties of (La0.8Sr0.2)(0.95)MnO3+ composites fabricated within. Different electrochemical behaviors were observed for the studied composites depending on lanthanide cation nature, i.e., whether they can exhibit different oxidation states or not. Specifically, (La0.8Sr0.2)(0.95)MnO3+/ceria composites with a mixed valence dopants (Tb and Pr) in the CeO2 structure are the best performing and present a limiting step at low frequencies; whereas those with ceria-doping elements withfixed oxidation state (Gd and Er) exhibit the limiting processes at higher frequencies. This fact is related to the higher magnitude of the TPB enlargement in the composite cathode achieved thanks to the promotion of mixed ionic-electronic conductivity in the Pr/Tb-doped ceria phase.The best cathode performance was obtained with (La0.8Sr0.2)(0.95)MnO3+_Ce0.8Pr0.2O2- cathodes with the lowest values for the polarization resistance in the 900-700 degrees C temperature range. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_cbfa3cc8a43e45cf0fa5acc2db9503e9 |
| institution | Universitat Politècnica de València (UPV) |
| instname_str | Universitat Politècnica de València (UPV) |
| language | eng |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:riunet.upv.es:10251/108054 |
| publishDate | 2017 |
| publishDateSort | 2017 |
| publisher | John Wiley & Sons |
| publisherStr | John Wiley & Sons |
| reponame_str | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| spelling | Tailoring Electrocatalytic Properties of Solid Oxide Fuel Cell Composite Cathodes Based on (La0.8Sr0.2)(0.95)MnO3+delta and Doped Cerias Ce(1 x)Ln(x)O(2 delta) (Ln=Gd, La, Er, Pr, Tb and x=0.1 0.2) Navarrete Algaba, Laura Vert Belenguer, Vicente Bernardo Balaguer Ramirez, Maria|||0000-0002-7098-9235 Serra Alfaro, José Manuel|||0000-0002-1515-1106 Cathode Composite Doped Cerias LSM Praseodymium SOFC [EN] Composites made of different doped cerias and (La0.8Sr0.2)(0.95)MnO3+ were studied as potential solid oxide fuel cell cathodes. Tb, Pr, Gd and Er have been introduced as ceria dopants to enhance the electrocatalytic properties of (La0.8Sr0.2)(0.95)MnO3+ composites fabricated within. Different electrochemical behaviors were observed for the studied composites depending on lanthanide cation nature, i.e., whether they can exhibit different oxidation states or not. Specifically, (La0.8Sr0.2)(0.95)MnO3+/ceria composites with a mixed valence dopants (Tb and Pr) in the CeO2 structure are the best performing and present a limiting step at low frequencies; whereas those with ceria-doping elements withfixed oxidation state (Gd and Er) exhibit the limiting processes at higher frequencies. This fact is related to the higher magnitude of the TPB enlargement in the composite cathode achieved thanks to the promotion of mixed ionic-electronic conductivity in the Pr/Tb-doped ceria phase.The best cathode performance was obtained with (La0.8Sr0.2)(0.95)MnO3+_Ce0.8Pr0.2O2- cathodes with the lowest values for the polarization resistance in the 900-700 degrees C temperature range. Funding from Spanish Government (MINECO ENE2014-57651 grant) is kindly acknowledged. John Wiley & Sons https://riunet.upv.es/handle/10251/108054 |
| spellingShingle | Tailoring Electrocatalytic Properties of Solid Oxide Fuel Cell Composite Cathodes Based on (La0.8Sr0.2)(0.95)MnO3+delta and Doped Cerias Ce(1 x)Ln(x)O(2 delta) (Ln=Gd, La, Er, Pr, Tb and x=0.1 0.2) Navarrete Algaba, Laura Cathode Composite Doped Cerias LSM Praseodymium SOFC |
| title | Tailoring Electrocatalytic Properties of Solid Oxide Fuel Cell Composite Cathodes Based on (La0.8Sr0.2)(0.95)MnO3+delta and Doped Cerias Ce(1 x)Ln(x)O(2 delta) (Ln=Gd, La, Er, Pr, Tb and x=0.1 0.2) |
| title_full | Tailoring Electrocatalytic Properties of Solid Oxide Fuel Cell Composite Cathodes Based on (La0.8Sr0.2)(0.95)MnO3+delta and Doped Cerias Ce(1 x)Ln(x)O(2 delta) (Ln=Gd, La, Er, Pr, Tb and x=0.1 0.2) |
| title_fullStr | Tailoring Electrocatalytic Properties of Solid Oxide Fuel Cell Composite Cathodes Based on (La0.8Sr0.2)(0.95)MnO3+delta and Doped Cerias Ce(1 x)Ln(x)O(2 delta) (Ln=Gd, La, Er, Pr, Tb and x=0.1 0.2) |
| title_full_unstemmed | Tailoring Electrocatalytic Properties of Solid Oxide Fuel Cell Composite Cathodes Based on (La0.8Sr0.2)(0.95)MnO3+delta and Doped Cerias Ce(1 x)Ln(x)O(2 delta) (Ln=Gd, La, Er, Pr, Tb and x=0.1 0.2) |
| title_short | Tailoring Electrocatalytic Properties of Solid Oxide Fuel Cell Composite Cathodes Based on (La0.8Sr0.2)(0.95)MnO3+delta and Doped Cerias Ce(1 x)Ln(x)O(2 delta) (Ln=Gd, La, Er, Pr, Tb and x=0.1 0.2) |
| title_sort | Tailoring Electrocatalytic Properties of Solid Oxide Fuel Cell Composite Cathodes Based on (La0.8Sr0.2)(0.95)MnO3+delta and Doped Cerias Ce(1 x)Ln(x)O(2 delta) (Ln=Gd, La, Er, Pr, Tb and x=0.1 0.2) |
| topic | Cathode Composite Doped Cerias LSM Praseodymium SOFC |
| topic_facet | Cathode Composite Doped Cerias LSM Praseodymium SOFC |
| url | https://riunet.upv.es/handle/10251/108054 |