New insights into the electrochemical hydrogen oxidation and evolution reaction mechanism
The effect of pH on the hydrogen oxidation and evolution reaction (HOR/HER) rates is addressed for the first time for the three most active monometallic surfaces: Pt, Ir, and Pd carbon-supported catalysts. Kinetic data were obtained for a proton exchange membrane fuel cell (PEMFC; pH approximately 0...
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| Veröffentlicht in: | Energy & environmental science 2014, Vol.7 (7), p.2255-2260 |
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| container_title | Energy & environmental science |
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| creator | Durst, J Siebel, A Simon, C Hasche, F Herranz, J Gasteiger, HA |
| description | The effect of pH on the hydrogen oxidation and evolution reaction (HOR/HER) rates is addressed for the first time for the three most active monometallic surfaces: Pt, Ir, and Pd carbon-supported catalysts. Kinetic data were obtained for a proton exchange membrane fuel cell (PEMFC; pH approximately 0) using the H sub(2)-pump mode and with a rotating disk electrode (RDE) in 0.1 M NaOH. Our findings point toward: (i) a similar approximately 100-fold activity decrease on all these surfaces when going from low to high pH; (ii) a reaction rate controlled by the Volmer step on Pt/C; and (iii) the H-binding energy being the unique and sole descriptor for the HOR/HER in alkaline electrolytes. Based on a detailed discussion of our data, we propose a new mechanism for the HOR/HER on Pt-metals in alkaline electrolytes. |
| doi_str_mv | 10.1039/c4ee00440j |
| format | Article |
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Kinetic data were obtained for a proton exchange membrane fuel cell (PEMFC; pH approximately 0) using the H sub(2)-pump mode and with a rotating disk electrode (RDE) in 0.1 M NaOH. Our findings point toward: (i) a similar approximately 100-fold activity decrease on all these surfaces when going from low to high pH; (ii) a reaction rate controlled by the Volmer step on Pt/C; and (iii) the H-binding energy being the unique and sole descriptor for the HOR/HER in alkaline electrolytes. Based on a detailed discussion of our data, we propose a new mechanism for the HOR/HER on Pt-metals in alkaline electrolytes.</description><identifier>ISSN: 1754-5692</identifier><identifier>EISSN: 1754-5706</identifier><identifier>DOI: 10.1039/c4ee00440j</identifier><language>eng</language><subject>Electrodes ; Electrolytes ; Evolution ; Oxidation ; Palladium ; Platinum ; Surface chemistry</subject><ispartof>Energy & environmental science, 2014, Vol.7 (7), p.2255-2260</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c411t-2b39ec62b1ef5ba77cb188035e6577100ee0fbad389ebd9d4796bee24072ff223</citedby><cites>FETCH-LOGICAL-c411t-2b39ec62b1ef5ba77cb188035e6577100ee0fbad389ebd9d4796bee24072ff223</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,4023,27922,27923,27924</link.rule.ids></links><search><creatorcontrib>Durst, J</creatorcontrib><creatorcontrib>Siebel, A</creatorcontrib><creatorcontrib>Simon, C</creatorcontrib><creatorcontrib>Hasche, F</creatorcontrib><creatorcontrib>Herranz, J</creatorcontrib><creatorcontrib>Gasteiger, HA</creatorcontrib><title>New insights into the electrochemical hydrogen oxidation and evolution reaction mechanism</title><title>Energy & environmental science</title><description>The effect of pH on the hydrogen oxidation and evolution reaction (HOR/HER) rates is addressed for the first time for the three most active monometallic surfaces: Pt, Ir, and Pd carbon-supported catalysts. 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Based on a detailed discussion of our data, we propose a new mechanism for the HOR/HER on Pt-metals in alkaline electrolytes.</description><subject>Electrodes</subject><subject>Electrolytes</subject><subject>Evolution</subject><subject>Oxidation</subject><subject>Palladium</subject><subject>Platinum</subject><subject>Surface chemistry</subject><issn>1754-5692</issn><issn>1754-5706</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqFkE1Lw0AQhhdRsFYv_oIcRYju93aPUuoXRS968BR2N5NmS5Ktu6naf29M9SwMzPPCw8C8CJ0TfEUw09eOA2DMOV4foAlRgudCYXn4x1LTY3SS0hpjSbHSE_T2BJ-Z75Jf1X0aoA9ZX0MGDbg-BldD651psnpXxrCCLgtfvjS9D11mujKDj9BsxxTBuBFacLXpfGpP0VFlmgRnv3uKXm8XL_P7fPl89zC_WeaOE9Ln1DINTlJLoBLWKOUsmc0wEyCFUgTj4aHKmpLNNNhSl1xpaQEox4pWFaVsii72dzcxvG8h9UXrk4OmMR2EbSqI5JRKxYb5VxWCa66UEIN6uVddDClFqIpN9K2Ju4Lg4qfqYs4Xi7HqR_YN0v5ydQ</recordid><startdate>2014</startdate><enddate>2014</enddate><creator>Durst, J</creator><creator>Siebel, A</creator><creator>Simon, C</creator><creator>Hasche, F</creator><creator>Herranz, J</creator><creator>Gasteiger, HA</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>7QH</scope><scope>7ST</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H97</scope><scope>L.G</scope><scope>SOI</scope><scope>7SP</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>L7M</scope></search><sort><creationdate>2014</creationdate><title>New insights into the electrochemical hydrogen oxidation and evolution reaction mechanism</title><author>Durst, J ; Siebel, A ; Simon, C ; Hasche, F ; Herranz, J ; Gasteiger, HA</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c411t-2b39ec62b1ef5ba77cb188035e6577100ee0fbad389ebd9d4796bee24072ff223</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Electrodes</topic><topic>Electrolytes</topic><topic>Evolution</topic><topic>Oxidation</topic><topic>Palladium</topic><topic>Platinum</topic><topic>Surface chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Durst, J</creatorcontrib><creatorcontrib>Siebel, A</creatorcontrib><creatorcontrib>Simon, C</creatorcontrib><creatorcontrib>Hasche, F</creatorcontrib><creatorcontrib>Herranz, J</creatorcontrib><creatorcontrib>Gasteiger, HA</creatorcontrib><collection>CrossRef</collection><collection>Aqualine</collection><collection>Environment Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Environment Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Energy & environmental science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Durst, J</au><au>Siebel, A</au><au>Simon, C</au><au>Hasche, F</au><au>Herranz, J</au><au>Gasteiger, HA</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>New insights into the electrochemical hydrogen oxidation and evolution reaction mechanism</atitle><jtitle>Energy & environmental science</jtitle><date>2014</date><risdate>2014</risdate><volume>7</volume><issue>7</issue><spage>2255</spage><epage>2260</epage><pages>2255-2260</pages><issn>1754-5692</issn><eissn>1754-5706</eissn><abstract>The effect of pH on the hydrogen oxidation and evolution reaction (HOR/HER) rates is addressed for the first time for the three most active monometallic surfaces: Pt, Ir, and Pd carbon-supported catalysts. 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| ispartof | Energy & environmental science, 2014, Vol.7 (7), p.2255-2260 |
| issn | 1754-5692 1754-5706 |
| language | eng |
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| source | Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| subjects | Electrodes Electrolytes Evolution Oxidation Palladium Platinum Surface chemistry |
| title | New insights into the electrochemical hydrogen oxidation and evolution reaction mechanism |
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