Influence of SO2 Concentration and Relative Humidity on Electrode Poisoning in Polymer Electrolyte Membrane Fuel Cells
We investigated influences of SO2 concentration and relative humidity in fuel and air streams on anode and cathode poisoning behaviors under open circuit voltage and load operating conditions in polymer electrolyte membrane fuel cells (PEMFCs). The rate of cell voltage degradation increased with the...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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The Japan Society of Mechanical Engineers
2012-10-01
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| Series: | Journal of Thermal Science and Technology |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jtst/7/4/7_619/_pdf/-char/en |
| _version_ | 1828310461993451520 |
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| author | Shohji TSUSHIMA Keisuke KANEKO Hiroyuki MORIOKA Shuichiro HIRAI |
| author_facet | Shohji TSUSHIMA Keisuke KANEKO Hiroyuki MORIOKA Shuichiro HIRAI |
| author_sort | Shohji TSUSHIMA |
| collection | DOAJ |
| description | We investigated influences of SO2 concentration and relative humidity in fuel and air streams on anode and cathode poisoning behaviors under open circuit voltage and load operating conditions in polymer electrolyte membrane fuel cells (PEMFCs). The rate of cell voltage degradation increased with the increase in SO2 concentration and the normalized cell voltage drop curves were consistent with each other. Cell voltage at equilibrium with SO2 supply was inversely proportional to the concentration of supplied SO2, suggesting that adsorption of sulfur species on the catalyst was in equilibrium and was determined by the SO2 concentration in the electrode. Relative humidity significantly impacted electrode contamination. Electrochemical surface area (ECSA) measured by cyclic voltammetry (CV) revealed pronounced anode contamination under lower RH conditions and suppressed contamination under high RH conditions. Fuel cell load operation showed mitigated anode poisoning, suggesting that appropriate water management of the polymer electrolyte membrane fuel cell (PEMFC) mitigates electrode contamination. |
| first_indexed | 2024-04-13T15:45:17Z |
| format | Article |
| id | doaj.art-5b66a1a5f50545b19ea06d2110b627f8 |
| institution | Directory Open Access Journal |
| issn | 1880-5566 |
| language | English |
| last_indexed | 2024-04-13T15:45:17Z |
| publishDate | 2012-10-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Journal of Thermal Science and Technology |
| spelling | doaj.art-5b66a1a5f50545b19ea06d2110b627f82022-12-22T02:41:00ZengThe Japan Society of Mechanical EngineersJournal of Thermal Science and Technology1880-55662012-10-017461963210.1299/jtst.7.619jtstInfluence of SO2 Concentration and Relative Humidity on Electrode Poisoning in Polymer Electrolyte Membrane Fuel CellsShohji TSUSHIMA0Keisuke KANEKO1Hiroyuki MORIOKA2Shuichiro HIRAI3Tokyo Institute of TechnologyTokyo Institute of TechnologyTokyo Institute of TechnologyTokyo Institute of TechnologyWe investigated influences of SO2 concentration and relative humidity in fuel and air streams on anode and cathode poisoning behaviors under open circuit voltage and load operating conditions in polymer electrolyte membrane fuel cells (PEMFCs). The rate of cell voltage degradation increased with the increase in SO2 concentration and the normalized cell voltage drop curves were consistent with each other. Cell voltage at equilibrium with SO2 supply was inversely proportional to the concentration of supplied SO2, suggesting that adsorption of sulfur species on the catalyst was in equilibrium and was determined by the SO2 concentration in the electrode. Relative humidity significantly impacted electrode contamination. Electrochemical surface area (ECSA) measured by cyclic voltammetry (CV) revealed pronounced anode contamination under lower RH conditions and suppressed contamination under high RH conditions. Fuel cell load operation showed mitigated anode poisoning, suggesting that appropriate water management of the polymer electrolyte membrane fuel cell (PEMFC) mitigates electrode contamination.https://www.jstage.jst.go.jp/article/jtst/7/4/7_619/_pdf/-char/enpolymer electrolyte membrane fuel celldegradationcontaminationelectrochemical surface areasulfur dioxidewater transport |
| spellingShingle | Shohji TSUSHIMA Keisuke KANEKO Hiroyuki MORIOKA Shuichiro HIRAI Influence of SO2 Concentration and Relative Humidity on Electrode Poisoning in Polymer Electrolyte Membrane Fuel Cells Journal of Thermal Science and Technology polymer electrolyte membrane fuel cell degradation contamination electrochemical surface area sulfur dioxide water transport |
| title | Influence of SO2 Concentration and Relative Humidity on Electrode Poisoning in Polymer Electrolyte Membrane Fuel Cells |
| title_full | Influence of SO2 Concentration and Relative Humidity on Electrode Poisoning in Polymer Electrolyte Membrane Fuel Cells |
| title_fullStr | Influence of SO2 Concentration and Relative Humidity on Electrode Poisoning in Polymer Electrolyte Membrane Fuel Cells |
| title_full_unstemmed | Influence of SO2 Concentration and Relative Humidity on Electrode Poisoning in Polymer Electrolyte Membrane Fuel Cells |
| title_short | Influence of SO2 Concentration and Relative Humidity on Electrode Poisoning in Polymer Electrolyte Membrane Fuel Cells |
| title_sort | influence of so2 concentration and relative humidity on electrode poisoning in polymer electrolyte membrane fuel cells |
| topic | polymer electrolyte membrane fuel cell degradation contamination electrochemical surface area sulfur dioxide water transport |
| url | https://www.jstage.jst.go.jp/article/jtst/7/4/7_619/_pdf/-char/en |
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