Effect of Di-phenyl Siloxane on the Catalytic Activity of Pt on Carbon
The effect of silicone on the catalytic activity of Pt for oxygen reduction and hydrogen adsorption was studied using di-phenyl siloxane as a source compound at a rotating disc electrode (RDE). Di-phenyl siloxane did not affect the catalytic activity of Pt when it was injected into the electrolyte....
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| creator | Sethuraman, Vijay A Weidner, John W Protsailo, Lesia V |
| description | The effect of silicone on the catalytic activity of Pt for oxygen reduction and hydrogen adsorption was studied using di-phenyl siloxane as a source compound at a rotating disc electrode (RDE). Di-phenyl siloxane did not affect the catalytic activity of Pt when it was injected into the electrolyte. However, it blocked the oxygen reduction reaction when it was premixed with the catalyst. Proton transport was not blocked in either case. We postulate that di-phenyl siloxane induces hydrophobicity and causes local water starvation thereby blocking oxygen transport. Hence, the slow leaching of silicone seals in a fuel cell could cause silicon accumulation in the electrode, which will irreversibly degrade fuel cell performance by blocking oxygen transport to the catalyst sites. |
| doi_str_mv | 10.48550/arxiv.2002.11698 |
| format | Article |
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Di-phenyl siloxane did not affect the catalytic activity of Pt when it was injected into the electrolyte. However, it blocked the oxygen reduction reaction when it was premixed with the catalyst. Proton transport was not blocked in either case. We postulate that di-phenyl siloxane induces hydrophobicity and causes local water starvation thereby blocking oxygen transport. Hence, the slow leaching of silicone seals in a fuel cell could cause silicon accumulation in the electrode, which will irreversibly degrade fuel cell performance by blocking oxygen transport to the catalyst sites.</description><identifier>EISSN: 2331-8422</identifier><identifier>DOI: 10.48550/arxiv.2002.11698</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Catalysts ; Catalytic activity ; Chemical reduction ; Electrodes ; Fuel cells ; Hydrophobicity ; Leaching ; Oxygen reduction reactions ; Physics - Applied Physics ; Physics - Materials Science ; Rotating disks ; Siloxanes</subject><ispartof>arXiv.org, 2020-02</ispartof><rights>2020. This work is published under http://arxiv.org/licenses/nonexclusive-distrib/1.0/ (the “License”). 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Hence, the slow leaching of silicone seals in a fuel cell could cause silicon accumulation in the electrode, which will irreversibly degrade fuel cell performance by blocking oxygen transport to the catalyst sites.</description><subject>Catalysts</subject><subject>Catalytic activity</subject><subject>Chemical reduction</subject><subject>Electrodes</subject><subject>Fuel cells</subject><subject>Hydrophobicity</subject><subject>Leaching</subject><subject>Oxygen reduction reactions</subject><subject>Physics - Applied Physics</subject><subject>Physics - Materials Science</subject><subject>Rotating disks</subject><subject>Siloxanes</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GOX</sourceid><recordid>eNotj1FLwzAUhYMgOOZ-gE8GfG5Nbpq0fRx1c8JAwb2X2zZhGbWpaTbWf--6-XQezsfhfIQ8cRYnmZTsFf3ZnmJgDGLOVZ7dkRkIwaMsAXggi2E4sEunUpBSzMh6ZYyuA3WGvtmo3-tubOm3bd0ZO01dR8Ne0wIDtmOwNV3WwZ5sGCf-K0x9gb5y3SO5N9gOevGfc7Jbr3bFJtp-vn8Uy22EEiAyjKPKRcWamqeg8jRNuEJAJjOtm8bwRhjUWlWVRGyEQgMGRJOrWmrOlBBz8nybvUqWvbc_6Mdyki2vshfi5Ub03v0e9RDKgzv67vKpBKFkngDnIP4Ai_FWUQ</recordid><startdate>20200226</startdate><enddate>20200226</enddate><creator>Sethuraman, Vijay A</creator><creator>Weidner, John W</creator><creator>Protsailo, Lesia V</creator><general>Cornell University Library, arXiv.org</general><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>GOX</scope></search><sort><creationdate>20200226</creationdate><title>Effect of Di-phenyl Siloxane on the Catalytic Activity of Pt on Carbon</title><author>Sethuraman, Vijay A ; Weidner, John W ; Protsailo, Lesia V</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a522-f01a693b0dc1726977416a2a058eeddf1d3faee6bb5aad36af2f23d96c5e10633</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Catalysts</topic><topic>Catalytic activity</topic><topic>Chemical reduction</topic><topic>Electrodes</topic><topic>Fuel cells</topic><topic>Hydrophobicity</topic><topic>Leaching</topic><topic>Oxygen reduction reactions</topic><topic>Physics - Applied Physics</topic><topic>Physics - Materials Science</topic><topic>Rotating disks</topic><topic>Siloxanes</topic><toplevel>online_resources</toplevel><creatorcontrib>Sethuraman, Vijay A</creatorcontrib><creatorcontrib>Weidner, John W</creatorcontrib><creatorcontrib>Protsailo, Lesia V</creatorcontrib><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><collection>arXiv.org</collection><jtitle>arXiv.org</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sethuraman, Vijay A</au><au>Weidner, John W</au><au>Protsailo, Lesia V</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of Di-phenyl Siloxane on the Catalytic Activity of Pt on Carbon</atitle><jtitle>arXiv.org</jtitle><date>2020-02-26</date><risdate>2020</risdate><eissn>2331-8422</eissn><abstract>The effect of silicone on the catalytic activity of Pt for oxygen reduction and hydrogen adsorption was studied using di-phenyl siloxane as a source compound at a rotating disc electrode (RDE). Di-phenyl siloxane did not affect the catalytic activity of Pt when it was injected into the electrolyte. However, it blocked the oxygen reduction reaction when it was premixed with the catalyst. Proton transport was not blocked in either case. We postulate that di-phenyl siloxane induces hydrophobicity and causes local water starvation thereby blocking oxygen transport. Hence, the slow leaching of silicone seals in a fuel cell could cause silicon accumulation in the electrode, which will irreversibly degrade fuel cell performance by blocking oxygen transport to the catalyst sites.</abstract><cop>Ithaca</cop><pub>Cornell University Library, arXiv.org</pub><doi>10.48550/arxiv.2002.11698</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Catalysts Catalytic activity Chemical reduction Electrodes Fuel cells Hydrophobicity Leaching Oxygen reduction reactions Physics - Applied Physics Physics - Materials Science Rotating disks Siloxanes |
| title | Effect of Di-phenyl Siloxane on the Catalytic Activity of Pt on Carbon |
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