Ordered alloy formation for Pt3Fe/C, PtFe/C and Pt5.75Fe5.75Cuy/CO2-reduction electro-catalysts
Carbon supported Pt3Fe, PtFe and Pt5.75Fe5.75Cu catalysts are prepared via the impregnation of Fe and/or Cu-nitrate precursor salts onto a preformed nano-sized Pt/C catalyst. They are referred to as Pt3Fe/C, PtFe/C and Pt5.75Fe5.75Cu/C catalysts and the subscripts refer to the nominal Pt, Fe and Cu...
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| Veröffentlicht in: | Electrochimica acta 2012-08, Vol.77, p.212-224 |
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| creator | Chen, L. Bock, C. Mercier, P.H.J. MacDougall, B.R. |
| description | Carbon supported Pt3Fe, PtFe and Pt5.75Fe5.75Cu catalysts are prepared via the impregnation of Fe and/or Cu-nitrate precursor salts onto a preformed nano-sized Pt/C catalyst. They are referred to as Pt3Fe/C, PtFe/C and Pt5.75Fe5.75Cu/C catalysts and the subscripts refer to the nominal Pt, Fe and Cu atomic ratios. The final catalysts are obtained by annealing the impregnated samples in a H2 enriched atmosphere. Pt5.75Fe6.75/C, Pt5.75Cu6.75/C and Pt5.75Fe5.75Cu2/C catalysts were also made. The as-prepared catalysts are characterized using X-ray diffraction, transmission electron microscopy, standard electrochemical methods and probed for the electrochemical O2 reduction reaction (orr). Rietveld analyses reveal that [Fm-3m] Pt, cubic [Pm-3m] Pt3Fe and tetragonal [P4/mmm] PtFe structure types are made. In case of the Pt5.75Fe5.75Cu/C catalyst, a nano-sized carbon-supported single-phase catalyst of [P4/mmm] structure is found to be made at 800°C, with Pt and Fe ordered on separate lattice planes, while Cu is distributed randomly onto both Pt and Fe atomic planes. The PtFe/C equivalent catalyst contains in addition a separate Fe phase as well as a slightly disordered [P4/mmm] phase. Pt5.75Cu6.75/C forms a disordered cubic [Fm-3m] alloy structure. The activity toward the orr was measured after 70 potential cycling, which can cause beneficial changes to the catalysts. In case of the specific orr activity, a dependence on the catalyst series is observed as follows: Pt5.75Fe5.75Cu/C [P4/mmm]>PtFe/C [P4/mmm]>Pt3Fe/C [Pm-3m]≈Pt5.75Cu6.75/C [Fm-3m]>Pt/C [Fm-3m]. The highest orr mass activities are also found for the Pt5.75Fe5.75Cu/C and subsequently for the PtFe/C catalysts. Estimated orr activities are well within the range reported in the literature. In fact the specific orr activities compare to results reported for so called de-alloyed catalyst that are among the highest orr mass activities reported in the recent literature. |
| doi_str_mv | 10.1016/j.electacta.2012.05.103 |
| format | Article |
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They are referred to as Pt3Fe/C, PtFe/C and Pt5.75Fe5.75Cu/C catalysts and the subscripts refer to the nominal Pt, Fe and Cu atomic ratios. The final catalysts are obtained by annealing the impregnated samples in a H2 enriched atmosphere. Pt5.75Fe6.75/C, Pt5.75Cu6.75/C and Pt5.75Fe5.75Cu2/C catalysts were also made. The as-prepared catalysts are characterized using X-ray diffraction, transmission electron microscopy, standard electrochemical methods and probed for the electrochemical O2 reduction reaction (orr). Rietveld analyses reveal that [Fm-3m] Pt, cubic [Pm-3m] Pt3Fe and tetragonal [P4/mmm] PtFe structure types are made. In case of the Pt5.75Fe5.75Cu/C catalyst, a nano-sized carbon-supported single-phase catalyst of [P4/mmm] structure is found to be made at 800°C, with Pt and Fe ordered on separate lattice planes, while Cu is distributed randomly onto both Pt and Fe atomic planes. The PtFe/C equivalent catalyst contains in addition a separate Fe phase as well as a slightly disordered [P4/mmm] phase. Pt5.75Cu6.75/C forms a disordered cubic [Fm-3m] alloy structure. The activity toward the orr was measured after 70 potential cycling, which can cause beneficial changes to the catalysts. In case of the specific orr activity, a dependence on the catalyst series is observed as follows: Pt5.75Fe5.75Cu/C [P4/mmm]>PtFe/C [P4/mmm]>Pt3Fe/C [Pm-3m]≈Pt5.75Cu6.75/C [Fm-3m]>Pt/C [Fm-3m]. The highest orr mass activities are also found for the Pt5.75Fe5.75Cu/C and subsequently for the PtFe/C catalysts. Estimated orr activities are well within the range reported in the literature. In fact the specific orr activities compare to results reported for so called de-alloyed catalyst that are among the highest orr mass activities reported in the recent literature.</description><identifier>ISSN: 0013-4686</identifier><identifier>EISSN: 1873-3859</identifier><identifier>DOI: 10.1016/j.electacta.2012.05.103</identifier><identifier>CODEN: ELCAAV</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Alloy formation ; Applied sciences ; Atomic structure ; Catalysis ; Catalysts ; Copper ; Energy ; Energy. Thermal use of fuels ; Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc ; Exact sciences and technology ; Fuel cells ; Iron ; Nanostructure ; O2 electro-reduction catalyst ; Ordered alloys ; PEMFCs ; Platinum ; Polytetrafluoroethylenes ; Rietveld fitting</subject><ispartof>Electrochimica acta, 2012-08, Vol.77, p.212-224</ispartof><rights>2012</rights><rights>2014 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c390t-6a0305cd2c44c6c608f71a1f88bd21151aa26bf6200a05c78cc9de02b9d537bc3</citedby><cites>FETCH-LOGICAL-c390t-6a0305cd2c44c6c608f71a1f88bd21151aa26bf6200a05c78cc9de02b9d537bc3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.electacta.2012.05.103$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>315,781,785,3551,27929,27930,46000</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=26151014$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Chen, L.</creatorcontrib><creatorcontrib>Bock, C.</creatorcontrib><creatorcontrib>Mercier, P.H.J.</creatorcontrib><creatorcontrib>MacDougall, B.R.</creatorcontrib><title>Ordered alloy formation for Pt3Fe/C, PtFe/C and Pt5.75Fe5.75Cuy/CO2-reduction electro-catalysts</title><title>Electrochimica acta</title><description>Carbon supported Pt3Fe, PtFe and Pt5.75Fe5.75Cu catalysts are prepared via the impregnation of Fe and/or Cu-nitrate precursor salts onto a preformed nano-sized Pt/C catalyst. They are referred to as Pt3Fe/C, PtFe/C and Pt5.75Fe5.75Cu/C catalysts and the subscripts refer to the nominal Pt, Fe and Cu atomic ratios. The final catalysts are obtained by annealing the impregnated samples in a H2 enriched atmosphere. Pt5.75Fe6.75/C, Pt5.75Cu6.75/C and Pt5.75Fe5.75Cu2/C catalysts were also made. The as-prepared catalysts are characterized using X-ray diffraction, transmission electron microscopy, standard electrochemical methods and probed for the electrochemical O2 reduction reaction (orr). Rietveld analyses reveal that [Fm-3m] Pt, cubic [Pm-3m] Pt3Fe and tetragonal [P4/mmm] PtFe structure types are made. In case of the Pt5.75Fe5.75Cu/C catalyst, a nano-sized carbon-supported single-phase catalyst of [P4/mmm] structure is found to be made at 800°C, with Pt and Fe ordered on separate lattice planes, while Cu is distributed randomly onto both Pt and Fe atomic planes. The PtFe/C equivalent catalyst contains in addition a separate Fe phase as well as a slightly disordered [P4/mmm] phase. Pt5.75Cu6.75/C forms a disordered cubic [Fm-3m] alloy structure. The activity toward the orr was measured after 70 potential cycling, which can cause beneficial changes to the catalysts. In case of the specific orr activity, a dependence on the catalyst series is observed as follows: Pt5.75Fe5.75Cu/C [P4/mmm]>PtFe/C [P4/mmm]>Pt3Fe/C [Pm-3m]≈Pt5.75Cu6.75/C [Fm-3m]>Pt/C [Fm-3m]. The highest orr mass activities are also found for the Pt5.75Fe5.75Cu/C and subsequently for the PtFe/C catalysts. Estimated orr activities are well within the range reported in the literature. In fact the specific orr activities compare to results reported for so called de-alloyed catalyst that are among the highest orr mass activities reported in the recent literature.</description><subject>Alloy formation</subject><subject>Applied sciences</subject><subject>Atomic structure</subject><subject>Catalysis</subject><subject>Catalysts</subject><subject>Copper</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>Iron</subject><subject>Nanostructure</subject><subject>O2 electro-reduction catalyst</subject><subject>Ordered alloys</subject><subject>PEMFCs</subject><subject>Platinum</subject><subject>Polytetrafluoroethylenes</subject><subject>Rietveld fitting</subject><issn>0013-4686</issn><issn>1873-3859</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNqFkE9LxDAQxYMouP75DO5F8GC7k6RJ2-NSXBWE9aDnMDtJoUu31aQr9Nub7orXhZAZmN97MzzG7jikHLhebFPXOhowvlQAFymoOJBnbMaLXCayUOU5mwFwmWS60JfsKoQtAOQ6hxkza2-dd3aObduP87r3Oxyavpu6-fsgV25RPcZmqnPsbGxVmquVm_5qPy6qtUiifk8H1eEU3yeEA7ZjGMINu6ixDe72r16zz9XTR_WSvK2fX6vlW0KyhCHRCBIUWUFZRpo0FHXOkddFsbGCc8URhd7UWgBg5PKCqLQOxKa0SuYbktfs4ej75fvvvQuD2TWBXNti5_p9MNFCZkJxoU6jUkcOeDmh-REl34fgXW2-fLNDPxoOZkrfbM1_-mZK34CKAxmV939LMBC2tceOmvAvFzoeBDyL3PLIuRjOT-O8CdS4jpxtfPQ1tm9O7voFq92cBQ</recordid><startdate>20120830</startdate><enddate>20120830</enddate><creator>Chen, L.</creator><creator>Bock, C.</creator><creator>Mercier, P.H.J.</creator><creator>MacDougall, B.R.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20120830</creationdate><title>Ordered alloy formation for Pt3Fe/C, PtFe/C and Pt5.75Fe5.75Cuy/CO2-reduction electro-catalysts</title><author>Chen, L. ; Bock, C. ; Mercier, P.H.J. ; MacDougall, B.R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c390t-6a0305cd2c44c6c608f71a1f88bd21151aa26bf6200a05c78cc9de02b9d537bc3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Alloy formation</topic><topic>Applied sciences</topic><topic>Atomic structure</topic><topic>Catalysis</topic><topic>Catalysts</topic><topic>Copper</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>Iron</topic><topic>Nanostructure</topic><topic>O2 electro-reduction catalyst</topic><topic>Ordered alloys</topic><topic>PEMFCs</topic><topic>Platinum</topic><topic>Polytetrafluoroethylenes</topic><topic>Rietveld fitting</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chen, L.</creatorcontrib><creatorcontrib>Bock, C.</creatorcontrib><creatorcontrib>Mercier, P.H.J.</creatorcontrib><creatorcontrib>MacDougall, B.R.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Electrochimica acta</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chen, L.</au><au>Bock, C.</au><au>Mercier, P.H.J.</au><au>MacDougall, B.R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Ordered alloy formation for Pt3Fe/C, PtFe/C and Pt5.75Fe5.75Cuy/CO2-reduction electro-catalysts</atitle><jtitle>Electrochimica acta</jtitle><date>2012-08-30</date><risdate>2012</risdate><volume>77</volume><spage>212</spage><epage>224</epage><pages>212-224</pages><issn>0013-4686</issn><eissn>1873-3859</eissn><coden>ELCAAV</coden><abstract>Carbon supported Pt3Fe, PtFe and Pt5.75Fe5.75Cu catalysts are prepared via the impregnation of Fe and/or Cu-nitrate precursor salts onto a preformed nano-sized Pt/C catalyst. They are referred to as Pt3Fe/C, PtFe/C and Pt5.75Fe5.75Cu/C catalysts and the subscripts refer to the nominal Pt, Fe and Cu atomic ratios. The final catalysts are obtained by annealing the impregnated samples in a H2 enriched atmosphere. Pt5.75Fe6.75/C, Pt5.75Cu6.75/C and Pt5.75Fe5.75Cu2/C catalysts were also made. The as-prepared catalysts are characterized using X-ray diffraction, transmission electron microscopy, standard electrochemical methods and probed for the electrochemical O2 reduction reaction (orr). Rietveld analyses reveal that [Fm-3m] Pt, cubic [Pm-3m] Pt3Fe and tetragonal [P4/mmm] PtFe structure types are made. In case of the Pt5.75Fe5.75Cu/C catalyst, a nano-sized carbon-supported single-phase catalyst of [P4/mmm] structure is found to be made at 800°C, with Pt and Fe ordered on separate lattice planes, while Cu is distributed randomly onto both Pt and Fe atomic planes. The PtFe/C equivalent catalyst contains in addition a separate Fe phase as well as a slightly disordered [P4/mmm] phase. Pt5.75Cu6.75/C forms a disordered cubic [Fm-3m] alloy structure. The activity toward the orr was measured after 70 potential cycling, which can cause beneficial changes to the catalysts. In case of the specific orr activity, a dependence on the catalyst series is observed as follows: Pt5.75Fe5.75Cu/C [P4/mmm]>PtFe/C [P4/mmm]>Pt3Fe/C [Pm-3m]≈Pt5.75Cu6.75/C [Fm-3m]>Pt/C [Fm-3m]. The highest orr mass activities are also found for the Pt5.75Fe5.75Cu/C and subsequently for the PtFe/C catalysts. Estimated orr activities are well within the range reported in the literature. In fact the specific orr activities compare to results reported for so called de-alloyed catalyst that are among the highest orr mass activities reported in the recent literature.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.electacta.2012.05.103</doi><tpages>13</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Alloy formation Applied sciences Atomic structure Catalysis Catalysts Copper Energy Energy. Thermal use of fuels Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc Exact sciences and technology Fuel cells Iron Nanostructure O2 electro-reduction catalyst Ordered alloys PEMFCs Platinum Polytetrafluoroethylenes Rietveld fitting |
| title | Ordered alloy formation for Pt3Fe/C, PtFe/C and Pt5.75Fe5.75Cuy/CO2-reduction electro-catalysts |
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