Enhancement of Oxygen Reduction and Mitigation of Ionomer Dry-Out Using Insoluble Heteropoly Acids in Intermediate Temperature Polymer-Electrolyte Membrane Fuel Cells
The use of Cs0.5H0.5PW12O40 insoluble salt as a superacid promoter in the catalyst layer of a polymer electrolyte membrane fuel cell (PEMFC) has been investigated. An increase of performance has been recorded at intermediate temperatures (110–130 °C) and under low relative humidity (R.H.). The promo...
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| Format: | Article |
| Language: | English |
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MDPI AG
2015-07-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/8/8/7805 |
| _version_ | 1811278077734420480 |
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| author | Alessandro Stassi Irene Gatto Ada Saccà Vincenzo Baglio Antonino S. Aricò |
| author_facet | Alessandro Stassi Irene Gatto Ada Saccà Vincenzo Baglio Antonino S. Aricò |
| author_sort | Alessandro Stassi |
| collection | DOAJ |
| description | The use of Cs0.5H0.5PW12O40 insoluble salt as a superacid promoter in the catalyst layer of a polymer electrolyte membrane fuel cell (PEMFC) has been investigated. An increase of performance has been recorded at intermediate temperatures (110–130 °C) and under low relative humidity (R.H.). The promoter appears to mitigate the ionomer dry-out effects in the catalytic layer and produces an increase of the extent of the catalyst-electrolyte interface as demonstrated by cyclic voltammetry analysis. These effects are also corroborated by a significant decrease of polarization resistance at intermediate temperatures. Such characteristics have been demonstrated for a conventional membrane-electrode assembly based on a Pt-Co alloy and a Nafion 115 membrane. |
| first_indexed | 2024-04-13T00:28:15Z |
| format | Article |
| id | doaj.art-c7d0c21770764605aceaaaca83db6de6 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-13T00:28:15Z |
| publishDate | 2015-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-c7d0c21770764605aceaaaca83db6de62022-12-22T03:10:33ZengMDPI AGEnergies1996-10732015-07-01887805781710.3390/en8087805en8087805Enhancement of Oxygen Reduction and Mitigation of Ionomer Dry-Out Using Insoluble Heteropoly Acids in Intermediate Temperature Polymer-Electrolyte Membrane Fuel CellsAlessandro Stassi0Irene Gatto1Ada Saccà2Vincenzo Baglio3Antonino S. Aricò4CNR-ITAE Institute of Advanced Energy Technologies "Nicola Giordano", Via Salita S. Lucia sopra Contesse 5, 98126 Messina, ItalyCNR-ITAE Institute of Advanced Energy Technologies "Nicola Giordano", Via Salita S. Lucia sopra Contesse 5, 98126 Messina, ItalyCNR-ITAE Institute of Advanced Energy Technologies "Nicola Giordano", Via Salita S. Lucia sopra Contesse 5, 98126 Messina, ItalyCNR-ITAE Institute of Advanced Energy Technologies "Nicola Giordano", Via Salita S. Lucia sopra Contesse 5, 98126 Messina, ItalyCNR-ITAE Institute of Advanced Energy Technologies "Nicola Giordano", Via Salita S. Lucia sopra Contesse 5, 98126 Messina, ItalyThe use of Cs0.5H0.5PW12O40 insoluble salt as a superacid promoter in the catalyst layer of a polymer electrolyte membrane fuel cell (PEMFC) has been investigated. An increase of performance has been recorded at intermediate temperatures (110–130 °C) and under low relative humidity (R.H.). The promoter appears to mitigate the ionomer dry-out effects in the catalytic layer and produces an increase of the extent of the catalyst-electrolyte interface as demonstrated by cyclic voltammetry analysis. These effects are also corroborated by a significant decrease of polarization resistance at intermediate temperatures. Such characteristics have been demonstrated for a conventional membrane-electrode assembly based on a Pt-Co alloy and a Nafion 115 membrane.http://www.mdpi.com/1996-1073/8/8/7805polymer electrolyte membrane fuel cell (PEMFC)heteropoly acidsCs0.5H0.5PW12O40intermediate temperatureoxygen reduction |
| spellingShingle | Alessandro Stassi Irene Gatto Ada Saccà Vincenzo Baglio Antonino S. Aricò Enhancement of Oxygen Reduction and Mitigation of Ionomer Dry-Out Using Insoluble Heteropoly Acids in Intermediate Temperature Polymer-Electrolyte Membrane Fuel Cells Energies polymer electrolyte membrane fuel cell (PEMFC) heteropoly acids Cs0.5H0.5PW12O40 intermediate temperature oxygen reduction |
| title | Enhancement of Oxygen Reduction and Mitigation of Ionomer Dry-Out Using Insoluble Heteropoly Acids in Intermediate Temperature Polymer-Electrolyte Membrane Fuel Cells |
| title_full | Enhancement of Oxygen Reduction and Mitigation of Ionomer Dry-Out Using Insoluble Heteropoly Acids in Intermediate Temperature Polymer-Electrolyte Membrane Fuel Cells |
| title_fullStr | Enhancement of Oxygen Reduction and Mitigation of Ionomer Dry-Out Using Insoluble Heteropoly Acids in Intermediate Temperature Polymer-Electrolyte Membrane Fuel Cells |
| title_full_unstemmed | Enhancement of Oxygen Reduction and Mitigation of Ionomer Dry-Out Using Insoluble Heteropoly Acids in Intermediate Temperature Polymer-Electrolyte Membrane Fuel Cells |
| title_short | Enhancement of Oxygen Reduction and Mitigation of Ionomer Dry-Out Using Insoluble Heteropoly Acids in Intermediate Temperature Polymer-Electrolyte Membrane Fuel Cells |
| title_sort | enhancement of oxygen reduction and mitigation of ionomer dry out using insoluble heteropoly acids in intermediate temperature polymer electrolyte membrane fuel cells |
| topic | polymer electrolyte membrane fuel cell (PEMFC) heteropoly acids Cs0.5H0.5PW12O40 intermediate temperature oxygen reduction |
| url | http://www.mdpi.com/1996-1073/8/8/7805 |
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