Perspectives on Cathodes for Protonic Ceramic Fuel Cells
Protonic ceramic fuel cells (PCFCs) are promising electrochemical devices for the efficient and clean conversion of hydrogen and low hydrocarbons into electrical energy. Their intermediate operation temperature (500–800 °C) proffers advantages in terms of greater component compatibility, unnecessity...
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MDPI AG
2021-06-01
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| Online Access: | https://www.mdpi.com/2076-3417/11/12/5363 |
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| author | Glenn C. Mather Daniel Muñoz-Gil Javier Zamudio-García José M. Porras-Vázquez David Marrero-López Domingo Pérez-Coll |
| author_facet | Glenn C. Mather Daniel Muñoz-Gil Javier Zamudio-García José M. Porras-Vázquez David Marrero-López Domingo Pérez-Coll |
| author_sort | Glenn C. Mather |
| collection | DOAJ |
| description | Protonic ceramic fuel cells (PCFCs) are promising electrochemical devices for the efficient and clean conversion of hydrogen and low hydrocarbons into electrical energy. Their intermediate operation temperature (500–800 °C) proffers advantages in terms of greater component compatibility, unnecessity of expensive noble metals for the electrocatalyst, and no dilution of the fuel electrode due to water formation. Nevertheless, the lower operating temperature, in comparison to classic solid oxide fuel cells, places significant demands on the cathode as the reaction kinetics are slower than those related to fuel oxidation in the anode or ion migration in the electrolyte. Cathode design and composition are therefore of crucial importance for the cell performance at low temperature. The different approaches that have been adopted for cathode materials research can be broadly classified into the categories of protonic–electronic conductors, oxide-ionic–electronic conductors, triple-conducting oxides, and composite electrodes composed of oxides from two of the other categories. Here, we review the relatively short history of PCFC cathode research, discussing trends, highlights, and recent progress. Current understanding of reaction mechanisms is also discussed. |
| first_indexed | 2024-03-10T10:34:09Z |
| format | Article |
| id | doaj.art-6abf92392a8947149950c5ba7c69985f |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T10:34:09Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-6abf92392a8947149950c5ba7c69985f2023-11-21T23:26:49ZengMDPI AGApplied Sciences2076-34172021-06-011112536310.3390/app11125363Perspectives on Cathodes for Protonic Ceramic Fuel CellsGlenn C. Mather0Daniel Muñoz-Gil1Javier Zamudio-García2José M. Porras-Vázquez3David Marrero-López4Domingo Pérez-Coll5Instituto de Cerámica y Vidrio, CSIC, Campus de Cantoblanco, 28049 Madrid, SpainInstituto de Cerámica y Vidrio, CSIC, Campus de Cantoblanco, 28049 Madrid, SpainDepartamento de Química Inorgánica, Universidad de Málaga, 29071 Málaga, SpainDepartamento de Química Inorgánica, Universidad de Málaga, 29071 Málaga, SpainDepartamento de Física Aplicada I, Universidad de Málaga, 29071 Málaga, SpainInstituto de Cerámica y Vidrio, CSIC, Campus de Cantoblanco, 28049 Madrid, SpainProtonic ceramic fuel cells (PCFCs) are promising electrochemical devices for the efficient and clean conversion of hydrogen and low hydrocarbons into electrical energy. Their intermediate operation temperature (500–800 °C) proffers advantages in terms of greater component compatibility, unnecessity of expensive noble metals for the electrocatalyst, and no dilution of the fuel electrode due to water formation. Nevertheless, the lower operating temperature, in comparison to classic solid oxide fuel cells, places significant demands on the cathode as the reaction kinetics are slower than those related to fuel oxidation in the anode or ion migration in the electrolyte. Cathode design and composition are therefore of crucial importance for the cell performance at low temperature. The different approaches that have been adopted for cathode materials research can be broadly classified into the categories of protonic–electronic conductors, oxide-ionic–electronic conductors, triple-conducting oxides, and composite electrodes composed of oxides from two of the other categories. Here, we review the relatively short history of PCFC cathode research, discussing trends, highlights, and recent progress. Current understanding of reaction mechanisms is also discussed.https://www.mdpi.com/2076-3417/11/12/5363proton ceramic fuel cellcathodeoxygen electrodetriple-conducting oxidesprotonic-electronic conductorcomposite |
| spellingShingle | Glenn C. Mather Daniel Muñoz-Gil Javier Zamudio-García José M. Porras-Vázquez David Marrero-López Domingo Pérez-Coll Perspectives on Cathodes for Protonic Ceramic Fuel Cells Applied Sciences proton ceramic fuel cell cathode oxygen electrode triple-conducting oxides protonic-electronic conductor composite |
| title | Perspectives on Cathodes for Protonic Ceramic Fuel Cells |
| title_full | Perspectives on Cathodes for Protonic Ceramic Fuel Cells |
| title_fullStr | Perspectives on Cathodes for Protonic Ceramic Fuel Cells |
| title_full_unstemmed | Perspectives on Cathodes for Protonic Ceramic Fuel Cells |
| title_short | Perspectives on Cathodes for Protonic Ceramic Fuel Cells |
| title_sort | perspectives on cathodes for protonic ceramic fuel cells |
| topic | proton ceramic fuel cell cathode oxygen electrode triple-conducting oxides protonic-electronic conductor composite |
| url | https://www.mdpi.com/2076-3417/11/12/5363 |
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