Role of Fe in the hydrogen oxidation reaction in a NiFe-based catalyst: an in situ Mössbauer spectroscopic investigation
Nickel-based catalysts reach a high activity for the hydrogen oxidation reaction (HOR) in anion exchange membrane fuel cells. While incorporation of iron significantly decreases the HOR overpotential on NiFe-based catalysts, the reason for the enhanced activity remains only partially understood. For...
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| Veröffentlicht in: | JPhys Energy 2023-07, Vol.5 (3), p.34009 |
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| creator | Ni, Lingmei Davydova, Elena S Singh, Ramesh K Kolik-Shmuel, Lubov Dekel, Dario R Kramm, Ulrike I |
| description | Nickel-based catalysts reach a high activity for the hydrogen oxidation reaction (HOR) in anion exchange membrane fuel cells. While incorporation of iron significantly decreases the HOR overpotential on NiFe-based catalysts, the reason for the enhanced activity remains only partially understood. For the first time,
in situ
57
Fe Mössbauer spectroscopy is used to gain insights into the iron-related composition at different potentials. The aim is to evaluate which changes occur on iron at potentials relevant for the HOR on the active Ni sites. It is found that different pre-conditionings at low potentials stabilize the iron at a low oxidation state as compared to the as-prepared catalyst powder. It is likely that the lower average oxidation state enables a higher exchange current density and a more efficient OH adsorption, which make the Volmer step much faster in the HOR. Insights from
in situ
Mössbauer spectroscopy enlighten the role of iron in the nickel-iron catalyst, paving the way for developing improved Ni-based catalysts for HOR catalysis. |
| doi_str_mv | 10.1088/2515-7655/acd661 |
| format | Article |
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in situ
57
Fe Mössbauer spectroscopy is used to gain insights into the iron-related composition at different potentials. The aim is to evaluate which changes occur on iron at potentials relevant for the HOR on the active Ni sites. It is found that different pre-conditionings at low potentials stabilize the iron at a low oxidation state as compared to the as-prepared catalyst powder. It is likely that the lower average oxidation state enables a higher exchange current density and a more efficient OH adsorption, which make the Volmer step much faster in the HOR. Insights from
in situ
Mössbauer spectroscopy enlighten the role of iron in the nickel-iron catalyst, paving the way for developing improved Ni-based catalysts for HOR catalysis.</description><identifier>ISSN: 2515-7655</identifier><identifier>EISSN: 2515-7655</identifier><identifier>DOI: 10.1088/2515-7655/acd661</identifier><language>eng</language><publisher>Bristol: IOP Publishing</publisher><subject>57Fe Mössbauer spectroscopy ; alkaline ; Anion exchanging ; anion-exchange membrane fuel cell ; Catalysis ; Catalysts ; Fe Mössbauer spectroscopy ; Fuel cells ; HOR ; Hydrogen ; Intermetallic compounds ; Iron compounds ; Mossbauer spectroscopy ; Nickel compounds ; Nickel iron ; NiFe catalyst ; Oxidation ; Spectrum analysis ; Valence</subject><ispartof>JPhys Energy, 2023-07, Vol.5 (3), p.34009</ispartof><rights>2023 The Author(s). Published by IOP Publishing Ltd</rights><rights>2023 The Author(s). Published by IOP Publishing Ltd. This work is published under http://creativecommons.org/licenses/by/4.0 (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c452t-96767a132cbb929160ca827f74bdf6f04d1ae23ad358caaf60bd337c946be2723</citedby><cites>FETCH-LOGICAL-c452t-96767a132cbb929160ca827f74bdf6f04d1ae23ad358caaf60bd337c946be2723</cites><orcidid>0000-0001-5718-8938 ; 0000-0002-5728-9306 ; 0000-0002-0884-1459 ; 0000-0002-8610-0808 ; 0000-0002-1005-7305</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.1088/2515-7655/acd661/pdf$$EPDF$$P50$$Giop$$Hfree_for_read</linktopdf><link.rule.ids>314,776,780,860,2095,27903,27904,38869,53845</link.rule.ids></links><search><creatorcontrib>Ni, Lingmei</creatorcontrib><creatorcontrib>Davydova, Elena S</creatorcontrib><creatorcontrib>Singh, Ramesh K</creatorcontrib><creatorcontrib>Kolik-Shmuel, Lubov</creatorcontrib><creatorcontrib>Dekel, Dario R</creatorcontrib><creatorcontrib>Kramm, Ulrike I</creatorcontrib><title>Role of Fe in the hydrogen oxidation reaction in a NiFe-based catalyst: an in situ Mössbauer spectroscopic investigation</title><title>JPhys Energy</title><addtitle>JPhysEnergy</addtitle><addtitle>J. Phys. Energy</addtitle><description>Nickel-based catalysts reach a high activity for the hydrogen oxidation reaction (HOR) in anion exchange membrane fuel cells. While incorporation of iron significantly decreases the HOR overpotential on NiFe-based catalysts, the reason for the enhanced activity remains only partially understood. For the first time,
in situ
57
Fe Mössbauer spectroscopy is used to gain insights into the iron-related composition at different potentials. The aim is to evaluate which changes occur on iron at potentials relevant for the HOR on the active Ni sites. It is found that different pre-conditionings at low potentials stabilize the iron at a low oxidation state as compared to the as-prepared catalyst powder. It is likely that the lower average oxidation state enables a higher exchange current density and a more efficient OH adsorption, which make the Volmer step much faster in the HOR. Insights from
in situ
Mössbauer spectroscopy enlighten the role of iron in the nickel-iron catalyst, paving the way for developing improved Ni-based catalysts for HOR catalysis.</description><subject>57Fe Mössbauer spectroscopy</subject><subject>alkaline</subject><subject>Anion exchanging</subject><subject>anion-exchange membrane fuel cell</subject><subject>Catalysis</subject><subject>Catalysts</subject><subject>Fe Mössbauer spectroscopy</subject><subject>Fuel cells</subject><subject>HOR</subject><subject>Hydrogen</subject><subject>Intermetallic compounds</subject><subject>Iron compounds</subject><subject>Mossbauer spectroscopy</subject><subject>Nickel compounds</subject><subject>Nickel iron</subject><subject>NiFe catalyst</subject><subject>Oxidation</subject><subject>Spectrum analysis</subject><subject>Valence</subject><issn>2515-7655</issn><issn>2515-7655</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>O3W</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>DOA</sourceid><recordid>eNp1kc9u1DAQhyMEElXpnaMljhDq_064oYqFSgUkBGdrYk-2Xi1xsL0VeTFegBfDu0GFA5w8Gn_z2aNf0zxl9CWjXXfJFVOt0UpdgvNaswfN2X3r4V_14-Yi5x2llHdKG0bPmuVT3COJI9kgCRMpt0huF5_iFicSvwcPJcSJJAR3KioC5EPYYDtARk8cFNgvubwicLrMoRzI-58_ch7ggInkGV1JMbs4B1eBO8wlbE_SJ82jEfYZL36f582XzZvPV-_am49vr69e37ROKl7aXhttgAnuhqHnPdPUQcfNaOTgRz1S6RkgF-CF6hzAqOnghTCul3pAbrg4b65Xr4-ws3MKXyEtNkKwp0ZMWwupBLdHy7QxUjmlQAqp-yo13ncD5SCAcwfV9Wx1zSl-O9Rd7C4e0lS_b3nHtaSqV7RSdKVc3TwnHO9fZdQe87LHQOwxELvmVUeeryMhzn-cuxknTNvFKissFZLS3s5-rPSLf9D_lf8C57GmbA</recordid><startdate>20230701</startdate><enddate>20230701</enddate><creator>Ni, Lingmei</creator><creator>Davydova, Elena S</creator><creator>Singh, Ramesh K</creator><creator>Kolik-Shmuel, Lubov</creator><creator>Dekel, Dario R</creator><creator>Kramm, Ulrike I</creator><general>IOP Publishing</general><scope>O3W</scope><scope>TSCCA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7SP</scope><scope>7U5</scope><scope>7XB</scope><scope>88I</scope><scope>8FD</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>L7M</scope><scope>M2P</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>Q9U</scope><scope>DOA</scope><orcidid>https://orcid.org/0000-0001-5718-8938</orcidid><orcidid>https://orcid.org/0000-0002-5728-9306</orcidid><orcidid>https://orcid.org/0000-0002-0884-1459</orcidid><orcidid>https://orcid.org/0000-0002-8610-0808</orcidid><orcidid>https://orcid.org/0000-0002-1005-7305</orcidid></search><sort><creationdate>20230701</creationdate><title>Role of Fe in the hydrogen oxidation reaction in a NiFe-based catalyst: an in situ Mössbauer spectroscopic investigation</title><author>Ni, Lingmei ; Davydova, Elena S ; Singh, Ramesh K ; Kolik-Shmuel, Lubov ; Dekel, Dario R ; Kramm, Ulrike I</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c452t-96767a132cbb929160ca827f74bdf6f04d1ae23ad358caaf60bd337c946be2723</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>57Fe Mössbauer spectroscopy</topic><topic>alkaline</topic><topic>Anion exchanging</topic><topic>anion-exchange membrane fuel cell</topic><topic>Catalysis</topic><topic>Catalysts</topic><topic>Fe Mössbauer spectroscopy</topic><topic>Fuel cells</topic><topic>HOR</topic><topic>Hydrogen</topic><topic>Intermetallic compounds</topic><topic>Iron compounds</topic><topic>Mossbauer spectroscopy</topic><topic>Nickel compounds</topic><topic>Nickel iron</topic><topic>NiFe catalyst</topic><topic>Oxidation</topic><topic>Spectrum analysis</topic><topic>Valence</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ni, Lingmei</creatorcontrib><creatorcontrib>Davydova, Elena S</creatorcontrib><creatorcontrib>Singh, Ramesh K</creatorcontrib><creatorcontrib>Kolik-Shmuel, Lubov</creatorcontrib><creatorcontrib>Dekel, Dario R</creatorcontrib><creatorcontrib>Kramm, Ulrike I</creatorcontrib><collection>IOP Publishing Free Content</collection><collection>IOPscience (Open Access)</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>Technology Research Database</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Science 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>ProQuest Central Basic</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>JPhys Energy</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ni, Lingmei</au><au>Davydova, Elena S</au><au>Singh, Ramesh K</au><au>Kolik-Shmuel, Lubov</au><au>Dekel, Dario R</au><au>Kramm, Ulrike I</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Role of Fe in the hydrogen oxidation reaction in a NiFe-based catalyst: an in situ Mössbauer spectroscopic investigation</atitle><jtitle>JPhys Energy</jtitle><stitle>JPhysEnergy</stitle><addtitle>J. Phys. Energy</addtitle><date>2023-07-01</date><risdate>2023</risdate><volume>5</volume><issue>3</issue><spage>34009</spage><pages>34009-</pages><issn>2515-7655</issn><eissn>2515-7655</eissn><abstract>Nickel-based catalysts reach a high activity for the hydrogen oxidation reaction (HOR) in anion exchange membrane fuel cells. While incorporation of iron significantly decreases the HOR overpotential on NiFe-based catalysts, the reason for the enhanced activity remains only partially understood. For the first time,
in situ
57
Fe Mössbauer spectroscopy is used to gain insights into the iron-related composition at different potentials. The aim is to evaluate which changes occur on iron at potentials relevant for the HOR on the active Ni sites. It is found that different pre-conditionings at low potentials stabilize the iron at a low oxidation state as compared to the as-prepared catalyst powder. It is likely that the lower average oxidation state enables a higher exchange current density and a more efficient OH adsorption, which make the Volmer step much faster in the HOR. Insights from
in situ
Mössbauer spectroscopy enlighten the role of iron in the nickel-iron catalyst, paving the way for developing improved Ni-based catalysts for HOR catalysis.</abstract><cop>Bristol</cop><pub>IOP Publishing</pub><doi>10.1088/2515-7655/acd661</doi><tpages>11</tpages><orcidid>https://orcid.org/0000-0001-5718-8938</orcidid><orcidid>https://orcid.org/0000-0002-5728-9306</orcidid><orcidid>https://orcid.org/0000-0002-0884-1459</orcidid><orcidid>https://orcid.org/0000-0002-8610-0808</orcidid><orcidid>https://orcid.org/0000-0002-1005-7305</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | 57Fe Mössbauer spectroscopy alkaline Anion exchanging anion-exchange membrane fuel cell Catalysis Catalysts Fe Mössbauer spectroscopy Fuel cells HOR Hydrogen Intermetallic compounds Iron compounds Mossbauer spectroscopy Nickel compounds Nickel iron NiFe catalyst Oxidation Spectrum analysis Valence |
| title | Role of Fe in the hydrogen oxidation reaction in a NiFe-based catalyst: an in situ Mössbauer spectroscopic investigation |
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