Graphene―cobaltite―Pd hybrid materials for use as efficient bifunctional electrocatalysts in alkaline direct methanol fuel cells
Hybrid materials comprising of Pd, MCo2O4 (where M = Mn, Co or Ni) and graphene have been prepared for use as efficient bifunctional electrocatalysts in alkaline direct methanol fuel cells. Structural and electrochemical characterizations were carried out using X-ray diffraction, transmission electr...
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| Veröffentlicht in: | Physical chemistry chemical physics : PCCP 2013-12, Vol.15 (46), p.20333-20344 |
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| container_title | Physical chemistry chemical physics : PCCP |
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| creator | CHANDRA SHEKHAR SHARMA AWASTHI, Rahul RAVINDRA NATH SINGH AKHOURY SUDHIR KUMAR SINHA |
| description | Hybrid materials comprising of Pd, MCo2O4 (where M = Mn, Co or Ni) and graphene have been prepared for use as efficient bifunctional electrocatalysts in alkaline direct methanol fuel cells. Structural and electrochemical characterizations were carried out using X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, chronoamperometry and cyclic, CO stripping, and linear sweep voltammetries. The study revealed that all the three hybrid materials are active for both methanol oxidation (MOR) and oxygen reduction (ORR) reactions in 1 M KOH. However, the Pd-MnCo2O4/GNS hybrid electrode exhibited the greatest MOR and ORR activities. This active hybrid electrode has also outstanding stability under both MOR and ORR conditions, while Pt- and other Pd-based catalysts undergo degradation under similar experimental conditions. The Pd-MnCo2O4/GNS hybrid catalyst exhibited superior ORR activity and stability compared to even Pt in alkaline solutions. |
| doi_str_mv | 10.1039/c3cp53880j |
| format | Article |
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Structural and electrochemical characterizations were carried out using X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, chronoamperometry and cyclic, CO stripping, and linear sweep voltammetries. The study revealed that all the three hybrid materials are active for both methanol oxidation (MOR) and oxygen reduction (ORR) reactions in 1 M KOH. However, the Pd-MnCo2O4/GNS hybrid electrode exhibited the greatest MOR and ORR activities. This active hybrid electrode has also outstanding stability under both MOR and ORR conditions, while Pt- and other Pd-based catalysts undergo degradation under similar experimental conditions. The Pd-MnCo2O4/GNS hybrid catalyst exhibited superior ORR activity and stability compared to even Pt in alkaline solutions.</description><identifier>ISSN: 1463-9076</identifier><identifier>EISSN: 1463-9084</identifier><identifier>DOI: 10.1039/c3cp53880j</identifier><identifier>PMID: 24169732</identifier><language>eng</language><publisher>Cambridge: Royal Society of Chemistry</publisher><subject>Applied sciences ; Catalysis ; Catalysts ; Chemistry ; Direct energy conversion and energy accumulation ; Electrical engineering. Electrical power engineering ; Electrical power engineering ; Electrochemical conversion: primary and secondary batteries, fuel cells ; Electrochemistry ; Electrodes ; Energy ; Energy. Thermal use of fuels ; Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc ; Exact sciences and technology ; Fuel cells ; General and physical chemistry ; Graphene ; Kinetics and mechanism of reactions ; Methyl alcohol ; Palladium ; X-rays</subject><ispartof>Physical chemistry chemical physics : PCCP, 2013-12, Vol.15 (46), p.20333-20344</ispartof><rights>2014 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c350t-bb2a52c41445a34d6158117b41459c1f5b11579c60f97ddf5d18804068ea9eaa3</citedby><cites>FETCH-LOGICAL-c350t-bb2a52c41445a34d6158117b41459c1f5b11579c60f97ddf5d18804068ea9eaa3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27923,27924</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=27921817$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24169732$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>CHANDRA SHEKHAR SHARMA</creatorcontrib><creatorcontrib>AWASTHI, Rahul</creatorcontrib><creatorcontrib>RAVINDRA NATH SINGH</creatorcontrib><creatorcontrib>AKHOURY SUDHIR KUMAR SINHA</creatorcontrib><title>Graphene―cobaltite―Pd hybrid materials for use as efficient bifunctional electrocatalysts in alkaline direct methanol fuel cells</title><title>Physical chemistry chemical physics : PCCP</title><addtitle>Phys Chem Chem Phys</addtitle><description>Hybrid materials comprising of Pd, MCo2O4 (where M = Mn, Co or Ni) and graphene have been prepared for use as efficient bifunctional electrocatalysts in alkaline direct methanol fuel cells. Structural and electrochemical characterizations were carried out using X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, chronoamperometry and cyclic, CO stripping, and linear sweep voltammetries. The study revealed that all the three hybrid materials are active for both methanol oxidation (MOR) and oxygen reduction (ORR) reactions in 1 M KOH. However, the Pd-MnCo2O4/GNS hybrid electrode exhibited the greatest MOR and ORR activities. This active hybrid electrode has also outstanding stability under both MOR and ORR conditions, while Pt- and other Pd-based catalysts undergo degradation under similar experimental conditions. The Pd-MnCo2O4/GNS hybrid catalyst exhibited superior ORR activity and stability compared to even Pt in alkaline solutions.</description><subject>Applied sciences</subject><subject>Catalysis</subject><subject>Catalysts</subject><subject>Chemistry</subject><subject>Direct energy conversion and energy accumulation</subject><subject>Electrical engineering. Electrical power engineering</subject><subject>Electrical power engineering</subject><subject>Electrochemical conversion: primary and secondary batteries, fuel cells</subject><subject>Electrochemistry</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>General and physical chemistry</subject><subject>Graphene</subject><subject>Kinetics and mechanism of reactions</subject><subject>Methyl alcohol</subject><subject>Palladium</subject><subject>X-rays</subject><issn>1463-9076</issn><issn>1463-9084</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNqFkcFO3DAQhi1UVCj0wgNUvlSqKm3xxHYSHyvU0kpIcIBzNHHGWlPH2drOYW899BV4QZ6kWbGFI6f5NfNpZvT_jJ2B-AJCmnMr7UbLthX3B-wYVC1XRrTqzbNu6iP2Lud7IQRokG_ZUaWgNo2sjtnfy4SbNUV6_PNgpx5D8WWnbwa-3vbJD3zEQsljyNxNic-ZOGZOznnrKRbeezdHW_wUMXAKZEuaLBYM21wy95Fj-IXBR-KDT8uUj1TWGKfA3UyBWwohn7JDtxyg9_t6wu6-f7u9-LG6ur78efH1amWlFmXV9xXqyipQSqNUQw26BWj6paGNBad7AN0YWwtnmmFweoDFFCXqltAQojxhn572btL0e6ZcutHn3QcYaZpzB3WzWKZaIV9HlTJV3WqlF_TzE2rTlHMi122SHzFtOxDdLqDuJaAF_rDfO_cjDc_o_0QW4OMewGwxuITR-vzCNaaCFhr5D9KenEM</recordid><startdate>20131214</startdate><enddate>20131214</enddate><creator>CHANDRA SHEKHAR SHARMA</creator><creator>AWASTHI, Rahul</creator><creator>RAVINDRA NATH SINGH</creator><creator>AKHOURY SUDHIR KUMAR SINHA</creator><general>Royal Society of Chemistry</general><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7SP</scope><scope>7TB</scope><scope>7U5</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20131214</creationdate><title>Graphene―cobaltite―Pd hybrid materials for use as efficient bifunctional electrocatalysts in alkaline direct methanol fuel cells</title><author>CHANDRA SHEKHAR SHARMA ; AWASTHI, Rahul ; RAVINDRA NATH SINGH ; AKHOURY SUDHIR KUMAR SINHA</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c350t-bb2a52c41445a34d6158117b41459c1f5b11579c60f97ddf5d18804068ea9eaa3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Applied sciences</topic><topic>Catalysis</topic><topic>Catalysts</topic><topic>Chemistry</topic><topic>Direct energy conversion and energy accumulation</topic><topic>Electrical engineering. Electrical power engineering</topic><topic>Electrical power engineering</topic><topic>Electrochemical conversion: primary and secondary batteries, fuel cells</topic><topic>Electrochemistry</topic><topic>Electrodes</topic><topic>Energy</topic><topic>Energy. 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Structural and electrochemical characterizations were carried out using X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, chronoamperometry and cyclic, CO stripping, and linear sweep voltammetries. The study revealed that all the three hybrid materials are active for both methanol oxidation (MOR) and oxygen reduction (ORR) reactions in 1 M KOH. However, the Pd-MnCo2O4/GNS hybrid electrode exhibited the greatest MOR and ORR activities. This active hybrid electrode has also outstanding stability under both MOR and ORR conditions, while Pt- and other Pd-based catalysts undergo degradation under similar experimental conditions. The Pd-MnCo2O4/GNS hybrid catalyst exhibited superior ORR activity and stability compared to even Pt in alkaline solutions.</abstract><cop>Cambridge</cop><pub>Royal Society of Chemistry</pub><pmid>24169732</pmid><doi>10.1039/c3cp53880j</doi><tpages>12</tpages></addata></record> |
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| ispartof | Physical chemistry chemical physics : PCCP, 2013-12, Vol.15 (46), p.20333-20344 |
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| source | Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| subjects | Applied sciences Catalysis Catalysts Chemistry Direct energy conversion and energy accumulation Electrical engineering. Electrical power engineering Electrical power engineering Electrochemical conversion: primary and secondary batteries, fuel cells Electrochemistry Electrodes Energy Energy. Thermal use of fuels Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc Exact sciences and technology Fuel cells General and physical chemistry Graphene Kinetics and mechanism of reactions Methyl alcohol Palladium X-rays |
| title | Graphene―cobaltite―Pd hybrid materials for use as efficient bifunctional electrocatalysts in alkaline direct methanol fuel cells |
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