Performance test and degradation analysis of direct methanol fuel cell membrane electrode assembly during freeze/thaw cycles
▶ The performance test of DMFC MEAs during freeze/thaw cycling was investigated. ▶ Degradation mechanisms of the post-mortem MEAs were discovered. ▶ Microstructural damage was the major disadvantage to drop the cell performance. ▶ A strategy was designed to prevent the membrane from broken. ▶ The me...
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description | ▶ The performance test of DMFC MEAs during freeze/thaw cycling was investigated. ▶ Degradation mechanisms of the post-mortem MEAs were discovered. ▶ Microstructural damage was the major disadvantage to drop the cell performance. ▶ A strategy was designed to prevent the membrane from broken. ▶ The methanol solution inside the DMFC stack was forbidden to be frozen.
Performance and degradation of direct methanol fuel cell (DMFC) membrane electrode assembly (MEA) are analyzed after repeated freeze/thaw cycles. Three different MEAs stored at −20°C for 8h with the anode side full of methanol solution are selected to test the effects of low temperatures on performance. After the cell heated to 60°C within 30min, they are inspected to determine the degradation mechanism. The resistance R obtained by the polarization curve is essential for identifying the main component affecting cell performance. The electrochemical impedance spectroscopy (EIS) technique is used to characterize the DMFC after freeze/thaw cycles. Thus, deterioration is assessed by measuring the high-frequency resistance (HFR) and the charge-transfer resistance (CTR). The electrochemical surface area (ECA) is employed to investigate not only the actual chemical degradation but also membrane status since sudden loss of ECA on the cathode side can result from a broken membrane. Moreover, a strategy is designed to simulate actual conditions that may prevent the membrane from being broken. A DMFC stack without any heating or heat-insulation devices shall avoid to be stored at subzero temperatures since the membrane will be useless due to frozen of methanol solution. |
doi_str_mv | 10.1016/j.jpowsour.2010.11.054 |
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Performance and degradation of direct methanol fuel cell (DMFC) membrane electrode assembly (MEA) are analyzed after repeated freeze/thaw cycles. Three different MEAs stored at −20°C for 8h with the anode side full of methanol solution are selected to test the effects of low temperatures on performance. After the cell heated to 60°C within 30min, they are inspected to determine the degradation mechanism. The resistance R obtained by the polarization curve is essential for identifying the main component affecting cell performance. The electrochemical impedance spectroscopy (EIS) technique is used to characterize the DMFC after freeze/thaw cycles. Thus, deterioration is assessed by measuring the high-frequency resistance (HFR) and the charge-transfer resistance (CTR). The electrochemical surface area (ECA) is employed to investigate not only the actual chemical degradation but also membrane status since sudden loss of ECA on the cathode side can result from a broken membrane. Moreover, a strategy is designed to simulate actual conditions that may prevent the membrane from being broken. A DMFC stack without any heating or heat-insulation devices shall avoid to be stored at subzero temperatures since the membrane will be useless due to frozen of methanol solution.</description><identifier>ISSN: 0378-7753</identifier><identifier>EISSN: 1873-2755</identifier><identifier>DOI: 10.1016/j.jpowsour.2010.11.054</identifier><identifier>CODEN: JPSODZ</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Applied sciences ; Assembly ; Degradation ; Devices ; Direct energy conversion and energy accumulation ; Direct methanol fuel cell ; Electrical engineering. Electrical power engineering ; Electrical power engineering ; Electrochemical conversion: primary and secondary batteries, fuel cells ; Electrochemical impedance spectroscopy ; Electrodes ; Energy ; Energy. Thermal use of fuels ; Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc ; Exact sciences and technology ; Fuel cells ; Membrane electrode assembly ; Membranes ; Methyl alcohol ; Polarization curve ; Subzero temperature</subject><ispartof>Journal of power sources, 2011-03, Vol.196 (5), p.2650-2660</ispartof><rights>2010 Elsevier B.V.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c374t-d6ab9f782ef82e9eae28167fc3161d7d564a09456f26910aeecf2054913c28f73</citedby><cites>FETCH-LOGICAL-c374t-d6ab9f782ef82e9eae28167fc3161d7d564a09456f26910aeecf2054913c28f73</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jpowsour.2010.11.054$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=23784392$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Cha, Hou-Chin</creatorcontrib><creatorcontrib>Chen, Charn-Ying</creatorcontrib><creatorcontrib>Wang, Rui-Xiang</creatorcontrib><creatorcontrib>Chang, Chun-Lung</creatorcontrib><title>Performance test and degradation analysis of direct methanol fuel cell membrane electrode assembly during freeze/thaw cycles</title><title>Journal of power sources</title><description>▶ The performance test of DMFC MEAs during freeze/thaw cycling was investigated. ▶ Degradation mechanisms of the post-mortem MEAs were discovered. ▶ Microstructural damage was the major disadvantage to drop the cell performance. ▶ A strategy was designed to prevent the membrane from broken. ▶ The methanol solution inside the DMFC stack was forbidden to be frozen.
Performance and degradation of direct methanol fuel cell (DMFC) membrane electrode assembly (MEA) are analyzed after repeated freeze/thaw cycles. Three different MEAs stored at −20°C for 8h with the anode side full of methanol solution are selected to test the effects of low temperatures on performance. After the cell heated to 60°C within 30min, they are inspected to determine the degradation mechanism. The resistance R obtained by the polarization curve is essential for identifying the main component affecting cell performance. The electrochemical impedance spectroscopy (EIS) technique is used to characterize the DMFC after freeze/thaw cycles. Thus, deterioration is assessed by measuring the high-frequency resistance (HFR) and the charge-transfer resistance (CTR). The electrochemical surface area (ECA) is employed to investigate not only the actual chemical degradation but also membrane status since sudden loss of ECA on the cathode side can result from a broken membrane. Moreover, a strategy is designed to simulate actual conditions that may prevent the membrane from being broken. A DMFC stack without any heating or heat-insulation devices shall avoid to be stored at subzero temperatures since the membrane will be useless due to frozen of methanol solution.</description><subject>Applied sciences</subject><subject>Assembly</subject><subject>Degradation</subject><subject>Devices</subject><subject>Direct energy conversion and energy accumulation</subject><subject>Direct methanol fuel cell</subject><subject>Electrical engineering. Electrical power engineering</subject><subject>Electrical power engineering</subject><subject>Electrochemical conversion: primary and secondary batteries, fuel cells</subject><subject>Electrochemical impedance spectroscopy</subject><subject>Electrodes</subject><subject>Energy</subject><subject>Energy. Thermal use of fuels</subject><subject>Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc</subject><subject>Exact sciences and technology</subject><subject>Fuel cells</subject><subject>Membrane electrode assembly</subject><subject>Membranes</subject><subject>Methyl alcohol</subject><subject>Polarization curve</subject><subject>Subzero temperature</subject><issn>0378-7753</issn><issn>1873-2755</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNqFkM1O3DAUhS1UpE4pr1B5U3WVwT-JnexaoRaQkGABa8vY1-CRE099k6KpePh6NJQtC8vy0Tk-936EfOFszRlXZ5v1ZpufMS9lLdhe5GvWtUdkxXstG6G77gNZMan7RutOfiSfEDeMMc41W5GXWyghl9FODugMOFM7eerhsVhv55in-rZphxFpDtTHAm6mI8xPdsqJhgUSdZBSlcaHYiegkKqjZA_UIlYx7ahfSpweaSgAf-GsRp-p27kE-JkcB5sQTl_vE3L_6-fd-WVzfXNxdf7junFSt3PjlX0Ygu4FhHoGsCB6rnRwkivute9Ua9nQdioINXBmAVwQFcHApRN90PKEfDv8uy3591KXNGPE_dh14Lyg6QclZKf7rjrVwelKRiwQzLbE0Zad4czsaZuN-U_b7Gkbzk2tqsGvrxUWnU2hsnAR39Ki4m_lIKrv-8EHdd8_EYpBF6HCP6A1Psf3qv4B1r6cZA</recordid><startdate>20110301</startdate><enddate>20110301</enddate><creator>Cha, Hou-Chin</creator><creator>Chen, Charn-Ying</creator><creator>Wang, Rui-Xiang</creator><creator>Chang, Chun-Lung</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>20110301</creationdate><title>Performance test and degradation analysis of direct methanol fuel cell membrane electrode assembly during freeze/thaw cycles</title><author>Cha, Hou-Chin ; Chen, Charn-Ying ; Wang, Rui-Xiang ; Chang, Chun-Lung</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c374t-d6ab9f782ef82e9eae28167fc3161d7d564a09456f26910aeecf2054913c28f73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Applied sciences</topic><topic>Assembly</topic><topic>Degradation</topic><topic>Devices</topic><topic>Direct energy conversion and energy accumulation</topic><topic>Direct methanol fuel cell</topic><topic>Electrical engineering. Electrical power engineering</topic><topic>Electrical power engineering</topic><topic>Electrochemical conversion: primary and secondary batteries, fuel cells</topic><topic>Electrochemical impedance spectroscopy</topic><topic>Electrodes</topic><topic>Energy</topic><topic>Energy. Thermal use of fuels</topic><topic>Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc</topic><topic>Exact sciences and technology</topic><topic>Fuel cells</topic><topic>Membrane electrode assembly</topic><topic>Membranes</topic><topic>Methyl alcohol</topic><topic>Polarization curve</topic><topic>Subzero temperature</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Cha, Hou-Chin</creatorcontrib><creatorcontrib>Chen, Charn-Ying</creatorcontrib><creatorcontrib>Wang, Rui-Xiang</creatorcontrib><creatorcontrib>Chang, Chun-Lung</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of power sources</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Cha, Hou-Chin</au><au>Chen, Charn-Ying</au><au>Wang, Rui-Xiang</au><au>Chang, Chun-Lung</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Performance test and degradation analysis of direct methanol fuel cell membrane electrode assembly during freeze/thaw cycles</atitle><jtitle>Journal of power sources</jtitle><date>2011-03-01</date><risdate>2011</risdate><volume>196</volume><issue>5</issue><spage>2650</spage><epage>2660</epage><pages>2650-2660</pages><issn>0378-7753</issn><eissn>1873-2755</eissn><coden>JPSODZ</coden><abstract>▶ The performance test of DMFC MEAs during freeze/thaw cycling was investigated. ▶ Degradation mechanisms of the post-mortem MEAs were discovered. ▶ Microstructural damage was the major disadvantage to drop the cell performance. ▶ A strategy was designed to prevent the membrane from broken. ▶ The methanol solution inside the DMFC stack was forbidden to be frozen.
Performance and degradation of direct methanol fuel cell (DMFC) membrane electrode assembly (MEA) are analyzed after repeated freeze/thaw cycles. Three different MEAs stored at −20°C for 8h with the anode side full of methanol solution are selected to test the effects of low temperatures on performance. After the cell heated to 60°C within 30min, they are inspected to determine the degradation mechanism. The resistance R obtained by the polarization curve is essential for identifying the main component affecting cell performance. The electrochemical impedance spectroscopy (EIS) technique is used to characterize the DMFC after freeze/thaw cycles. Thus, deterioration is assessed by measuring the high-frequency resistance (HFR) and the charge-transfer resistance (CTR). The electrochemical surface area (ECA) is employed to investigate not only the actual chemical degradation but also membrane status since sudden loss of ECA on the cathode side can result from a broken membrane. Moreover, a strategy is designed to simulate actual conditions that may prevent the membrane from being broken. A DMFC stack without any heating or heat-insulation devices shall avoid to be stored at subzero temperatures since the membrane will be useless due to frozen of methanol solution.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.jpowsour.2010.11.054</doi><tpages>11</tpages></addata></record> |
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subjects | Applied sciences Assembly Degradation Devices Direct energy conversion and energy accumulation Direct methanol fuel cell Electrical engineering. Electrical power engineering Electrical power engineering Electrochemical conversion: primary and secondary batteries, fuel cells Electrochemical impedance spectroscopy Electrodes Energy Energy. Thermal use of fuels Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc Exact sciences and technology Fuel cells Membrane electrode assembly Membranes Methyl alcohol Polarization curve Subzero temperature |
title | Performance test and degradation analysis of direct methanol fuel cell membrane electrode assembly during freeze/thaw cycles |
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