Water transport in polymer electrolyte membrane fuel cell: Degradation effect of gas diffusion layer
Summary Proton exchange membrane fuel cells (PEMFCs) have garnered considerable attention for transportation applications owing to their high energy efficiency. Understanding their long‐term durability is essential because the performance deteriorates over time. The water transport characteristics o...
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| Veröffentlicht in: | International journal of energy research 2022-06, Vol.46 (7), p.9058-9070 |
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| container_title | International journal of energy research |
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| creator | Park, Jooyoung Oh, Hwanyeong Park, Hanwook Moon, Jong Woon Lee, Sang Joon Jung, Sung Yong |
| description | Summary
Proton exchange membrane fuel cells (PEMFCs) have garnered considerable attention for transportation applications owing to their high energy efficiency. Understanding their long‐term durability is essential because the performance deteriorates over time. The water transport characteristics of the gas diffusion layer (GDL), aged by inserting hydrogen peroxide solutions, are investigated. The dynamics of the water meniscus inside the GDL is visualized via synchrotron phase‐contrast radiography, and the temporal variations in the pressure are measured simultaneously. The pressure and time at breakthrough (BT) when the water firstly emerged from GDL were compared. The degraded GDL exhibits a larger BT pressure and requires a longer time to achieve the first water BT than the pristine GDL. Unlike the pristine GDL showing snap‐off patterns, water continuously penetrates the degraded GDL representing the piston‐like movement, and repetitive increases and decreases in the pressure are not observed. This difference represents the dominant transport mechanisms. GDL degradation induces the loss of polytetrafluoroethylene (PTFE), which is generally used for the effective transport of fuel and water. The PTFE loss reduces the hydrophobicity and pore size, which can increase the actual path length of the water flow. The increase in the BT time and BT pressure, as well as continuous transport, can disrupt fuel supply to chemical reaction sites, thereby deteriorating the PEMFC performance.
The water transport characteristics inside the GDL is investigated via synchrotron phase‐contrast radiography, and the temporal variations in the pressure are measured simultaneously.
The degraded GDL exhibits a larger breakthrough pressure and requires a longer time to acheive the first water breakthrough than the pristine GDL.
Water continously penetrates the degraded GDL, while pristine GDL shows discrete snap‐off of water with repetitive increases and decreases. |
| doi_str_mv | 10.1002/er.7782 |
| format | Article |
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Proton exchange membrane fuel cells (PEMFCs) have garnered considerable attention for transportation applications owing to their high energy efficiency. Understanding their long‐term durability is essential because the performance deteriorates over time. The water transport characteristics of the gas diffusion layer (GDL), aged by inserting hydrogen peroxide solutions, are investigated. The dynamics of the water meniscus inside the GDL is visualized via synchrotron phase‐contrast radiography, and the temporal variations in the pressure are measured simultaneously. The pressure and time at breakthrough (BT) when the water firstly emerged from GDL were compared. The degraded GDL exhibits a larger BT pressure and requires a longer time to achieve the first water BT than the pristine GDL. Unlike the pristine GDL showing snap‐off patterns, water continuously penetrates the degraded GDL representing the piston‐like movement, and repetitive increases and decreases in the pressure are not observed. This difference represents the dominant transport mechanisms. GDL degradation induces the loss of polytetrafluoroethylene (PTFE), which is generally used for the effective transport of fuel and water. The PTFE loss reduces the hydrophobicity and pore size, which can increase the actual path length of the water flow. The increase in the BT time and BT pressure, as well as continuous transport, can disrupt fuel supply to chemical reaction sites, thereby deteriorating the PEMFC performance.
The water transport characteristics inside the GDL is investigated via synchrotron phase‐contrast radiography, and the temporal variations in the pressure are measured simultaneously.
The degraded GDL exhibits a larger breakthrough pressure and requires a longer time to acheive the first water breakthrough than the pristine GDL.
Water continously penetrates the degraded GDL, while pristine GDL shows discrete snap‐off of water with repetitive increases and decreases.</description><identifier>ISSN: 0363-907X</identifier><identifier>EISSN: 1099-114X</identifier><identifier>DOI: 10.1002/er.7782</identifier><language>eng</language><publisher>Chichester, UK: John Wiley & Sons, Inc</publisher><subject>Chemical reactions ; Degradation ; Diffusion ; Diffusion effects ; Diffusion layers ; Electrolytic cells ; Energy efficiency ; Fuel cells ; Fuel technology ; gas diffusion layer degradation ; Gaseous diffusion ; Hydrogen peroxide ; Hydrophobicity ; Polymers ; Polytetrafluoroethylene ; Pore size ; Pressure ; Proton exchange membrane fuel cells ; Radiography ; Synchrotrons ; Temporal variations ; Transport ; Transport properties ; Transportation applications ; Water ; Water flow ; Water transport ; x‐ray imaging</subject><ispartof>International journal of energy research, 2022-06, Vol.46 (7), p.9058-9070</ispartof><rights>2022 John Wiley & Sons Ltd.</rights><rights>2022 John Wiley & Sons, Ltd.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c2892-f8181c326a34e3c4f616e2f35539d12b4b045173b28107e97267c979159371eb3</citedby><cites>FETCH-LOGICAL-c2892-f8181c326a34e3c4f616e2f35539d12b4b045173b28107e97267c979159371eb3</cites><orcidid>0000-0002-1888-1016</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fer.7782$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fer.7782$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids></links><search><creatorcontrib>Park, Jooyoung</creatorcontrib><creatorcontrib>Oh, Hwanyeong</creatorcontrib><creatorcontrib>Park, Hanwook</creatorcontrib><creatorcontrib>Moon, Jong Woon</creatorcontrib><creatorcontrib>Lee, Sang Joon</creatorcontrib><creatorcontrib>Jung, Sung Yong</creatorcontrib><title>Water transport in polymer electrolyte membrane fuel cell: Degradation effect of gas diffusion layer</title><title>International journal of energy research</title><description>Summary
Proton exchange membrane fuel cells (PEMFCs) have garnered considerable attention for transportation applications owing to their high energy efficiency. Understanding their long‐term durability is essential because the performance deteriorates over time. The water transport characteristics of the gas diffusion layer (GDL), aged by inserting hydrogen peroxide solutions, are investigated. The dynamics of the water meniscus inside the GDL is visualized via synchrotron phase‐contrast radiography, and the temporal variations in the pressure are measured simultaneously. The pressure and time at breakthrough (BT) when the water firstly emerged from GDL were compared. The degraded GDL exhibits a larger BT pressure and requires a longer time to achieve the first water BT than the pristine GDL. Unlike the pristine GDL showing snap‐off patterns, water continuously penetrates the degraded GDL representing the piston‐like movement, and repetitive increases and decreases in the pressure are not observed. This difference represents the dominant transport mechanisms. GDL degradation induces the loss of polytetrafluoroethylene (PTFE), which is generally used for the effective transport of fuel and water. The PTFE loss reduces the hydrophobicity and pore size, which can increase the actual path length of the water flow. The increase in the BT time and BT pressure, as well as continuous transport, can disrupt fuel supply to chemical reaction sites, thereby deteriorating the PEMFC performance.
The water transport characteristics inside the GDL is investigated via synchrotron phase‐contrast radiography, and the temporal variations in the pressure are measured simultaneously.
The degraded GDL exhibits a larger breakthrough pressure and requires a longer time to acheive the first water breakthrough than the pristine GDL.
Water continously penetrates the degraded GDL, while pristine GDL shows discrete snap‐off of water with repetitive increases and decreases.</description><subject>Chemical reactions</subject><subject>Degradation</subject><subject>Diffusion</subject><subject>Diffusion effects</subject><subject>Diffusion layers</subject><subject>Electrolytic cells</subject><subject>Energy efficiency</subject><subject>Fuel cells</subject><subject>Fuel technology</subject><subject>gas diffusion layer degradation</subject><subject>Gaseous diffusion</subject><subject>Hydrogen peroxide</subject><subject>Hydrophobicity</subject><subject>Polymers</subject><subject>Polytetrafluoroethylene</subject><subject>Pore size</subject><subject>Pressure</subject><subject>Proton exchange membrane fuel cells</subject><subject>Radiography</subject><subject>Synchrotrons</subject><subject>Temporal variations</subject><subject>Transport</subject><subject>Transport properties</subject><subject>Transportation applications</subject><subject>Water</subject><subject>Water flow</subject><subject>Water transport</subject><subject>x‐ray imaging</subject><issn>0363-907X</issn><issn>1099-114X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNp10EtLxDAQB_AgCq6r-BUCHjxI1zzapPEm6_qABUEU9xbSdrJ0SR8mLdJvb9b16mmY__yYgUHokpIFJYTdgl9ImbMjNKNEqYTSdHOMZoQLnigiN6foLIQdIXFG5QxVn2YAjwdv2tB3fsB1i_vOTU0MwUE5-NgMgBtoimgA2xEcLsG5O_wAW28qM9Rdi8HaiHFn8dYEXNXWjmGfOzOBP0cn1rgAF391jj4eV-_L52T9-vSyvF8nJcsVS2xOc1pyJgxPgZepFVQAszzLuKooK9KCpBmVvGA5JRKUZEKWSiqaKS4pFHyOrg57e999jRAGvetG38aTmgmRSkJzwaK6PqjSdyF4sLr3dWP8pCnR-xdq8Hr_wihvDvK7djD9x_Tq7Vf_AP4McLc</recordid><startdate>20220610</startdate><enddate>20220610</enddate><creator>Park, Jooyoung</creator><creator>Oh, Hwanyeong</creator><creator>Park, Hanwook</creator><creator>Moon, Jong Woon</creator><creator>Lee, Sang Joon</creator><creator>Jung, Sung Yong</creator><general>John Wiley & Sons, Inc</general><general>Hindawi Limited</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7ST</scope><scope>7TB</scope><scope>7TN</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>F28</scope><scope>FR3</scope><scope>H96</scope><scope>KR7</scope><scope>L.G</scope><scope>L7M</scope><scope>SOI</scope><orcidid>https://orcid.org/0000-0002-1888-1016</orcidid></search><sort><creationdate>20220610</creationdate><title>Water transport in polymer electrolyte membrane fuel cell: Degradation effect of gas diffusion layer</title><author>Park, Jooyoung ; Oh, Hwanyeong ; Park, Hanwook ; Moon, Jong Woon ; Lee, Sang Joon ; Jung, Sung Yong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2892-f8181c326a34e3c4f616e2f35539d12b4b045173b28107e97267c979159371eb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Chemical reactions</topic><topic>Degradation</topic><topic>Diffusion</topic><topic>Diffusion effects</topic><topic>Diffusion layers</topic><topic>Electrolytic cells</topic><topic>Energy efficiency</topic><topic>Fuel cells</topic><topic>Fuel technology</topic><topic>gas diffusion layer degradation</topic><topic>Gaseous diffusion</topic><topic>Hydrogen peroxide</topic><topic>Hydrophobicity</topic><topic>Polymers</topic><topic>Polytetrafluoroethylene</topic><topic>Pore size</topic><topic>Pressure</topic><topic>Proton exchange membrane fuel cells</topic><topic>Radiography</topic><topic>Synchrotrons</topic><topic>Temporal variations</topic><topic>Transport</topic><topic>Transport properties</topic><topic>Transportation applications</topic><topic>Water</topic><topic>Water flow</topic><topic>Water transport</topic><topic>x‐ray imaging</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Park, Jooyoung</creatorcontrib><creatorcontrib>Oh, Hwanyeong</creatorcontrib><creatorcontrib>Park, Hanwook</creatorcontrib><creatorcontrib>Moon, Jong Woon</creatorcontrib><creatorcontrib>Lee, Sang Joon</creatorcontrib><creatorcontrib>Jung, Sung Yong</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Environment Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Environment Abstracts</collection><jtitle>International journal of energy research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Park, Jooyoung</au><au>Oh, Hwanyeong</au><au>Park, Hanwook</au><au>Moon, Jong Woon</au><au>Lee, Sang Joon</au><au>Jung, Sung Yong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Water transport in polymer electrolyte membrane fuel cell: Degradation effect of gas diffusion layer</atitle><jtitle>International journal of energy research</jtitle><date>2022-06-10</date><risdate>2022</risdate><volume>46</volume><issue>7</issue><spage>9058</spage><epage>9070</epage><pages>9058-9070</pages><issn>0363-907X</issn><eissn>1099-114X</eissn><abstract>Summary
Proton exchange membrane fuel cells (PEMFCs) have garnered considerable attention for transportation applications owing to their high energy efficiency. Understanding their long‐term durability is essential because the performance deteriorates over time. The water transport characteristics of the gas diffusion layer (GDL), aged by inserting hydrogen peroxide solutions, are investigated. The dynamics of the water meniscus inside the GDL is visualized via synchrotron phase‐contrast radiography, and the temporal variations in the pressure are measured simultaneously. The pressure and time at breakthrough (BT) when the water firstly emerged from GDL were compared. The degraded GDL exhibits a larger BT pressure and requires a longer time to achieve the first water BT than the pristine GDL. Unlike the pristine GDL showing snap‐off patterns, water continuously penetrates the degraded GDL representing the piston‐like movement, and repetitive increases and decreases in the pressure are not observed. This difference represents the dominant transport mechanisms. GDL degradation induces the loss of polytetrafluoroethylene (PTFE), which is generally used for the effective transport of fuel and water. The PTFE loss reduces the hydrophobicity and pore size, which can increase the actual path length of the water flow. The increase in the BT time and BT pressure, as well as continuous transport, can disrupt fuel supply to chemical reaction sites, thereby deteriorating the PEMFC performance.
The water transport characteristics inside the GDL is investigated via synchrotron phase‐contrast radiography, and the temporal variations in the pressure are measured simultaneously.
The degraded GDL exhibits a larger breakthrough pressure and requires a longer time to acheive the first water breakthrough than the pristine GDL.
Water continously penetrates the degraded GDL, while pristine GDL shows discrete snap‐off of water with repetitive increases and decreases.</abstract><cop>Chichester, UK</cop><pub>John Wiley & Sons, Inc</pub><doi>10.1002/er.7782</doi><tpages>13</tpages><orcidid>https://orcid.org/0000-0002-1888-1016</orcidid></addata></record> |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Chemical reactions Degradation Diffusion Diffusion effects Diffusion layers Electrolytic cells Energy efficiency Fuel cells Fuel technology gas diffusion layer degradation Gaseous diffusion Hydrogen peroxide Hydrophobicity Polymers Polytetrafluoroethylene Pore size Pressure Proton exchange membrane fuel cells Radiography Synchrotrons Temporal variations Transport Transport properties Transportation applications Water Water flow Water transport x‐ray imaging |
| title | Water transport in polymer electrolyte membrane fuel cell: Degradation effect of gas diffusion layer |
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