Cobalt Nanoparticles Embedded in Nitrogen-Doped Carbon for the Hydrogen Evolution Reaction

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dc.citation.firstpage8083en_US
dc.citation.issueNumber15en_US
dc.citation.journalTitleACS Applied Materials & Interfacesen_US
dc.citation.lastpage8087en_US
dc.citation.volumeNumber7en_US
dc.contributor.authorFei, Huilongen_US
dc.contributor.authorYang, Yangen_US
dc.contributor.authorPeng, Zhiweien_US
dc.contributor.authorRuan, Gedengen_US
dc.contributor.authorZhong, Qifengen_US
dc.contributor.authorLi, Leien_US
dc.contributor.authorSamuel, Errol L.G.en_US
dc.contributor.authorTour, James M.en_US
dc.contributor.orgSmalley Institute for Nanoscale Science and Technologyen_US
dc.date.accessioned2016-06-27T14:14:28Zen_US
dc.date.available2016-06-27T14:14:28Zen_US
dc.date.issued2015en_US
dc.description.abstractThere is great interest in renewable and sustainable energy research to develop low-cost, highly efficient, and stable electrocatalysts as alternatives to replace Pt-based catalysts for the hydrogen evolution reaction (HER). Though nanoparticles encapsulated in carbon shells have been widely used to improve the electrode performances in energy storage devices (e.g., lithium ion batteries), they have attracted less attention in energy-related electrocatalysis. Here we report the synthesis of nitrogen-enriched core–shell structured cobalt–carbon nanoparticles dispersed on graphene sheets and we investigate their HER performances in both acidic and basic media. These catalysts exhibit excellent durability and HER activities with onset overpotentials as low as ∼70 mV in both acidic (0.5 M H2SO4) and alkaline (0.1 M NaOH) electrolytes, and the overpotentials needed to deliver 10 mA cm–2 are determined to be 265 mV in acid and 337 mV in base, further demonstrating their potential to replace Pt-based catalysts. Control experiments reveal that the active sites for HER might come from the synergistic effects between the cobalt nanoparticles and nitrogen-doped carbon.en_US
dc.identifier.citationFei, Huilong, Yang, Yang, Peng, Zhiwei, et al.. "Cobalt Nanoparticles Embedded in Nitrogen-Doped Carbon for the Hydrogen Evolution Reaction." <i>ACS Applied Materials & Interfaces,</i> 7, no. 15 (2015) American Chemical Society: 8083-8087. http://dx.doi.org/10.1021/acsami.5b00652.en_US
dc.identifier.doihttp://dx.doi.org/10.1021/acsami.5b00652en_US
dc.identifier.urihttps://hdl.handle.net/1911/90574en_US
dc.language.isoengen_US
dc.publisherAmerican Chemical Societyen_US
dc.rightsThis is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes.en_US
dc.rights.urihttp://pubs.acs.org/page/policy/authorchoice_termsofuse.htmlen_US
dc.subject.keywordelectrocatalytic hydrogen evolutionen_US
dc.subject.keywordnitrogen dopingen_US
dc.subject.keywordgrapheneen_US
dc.subject.keywordcobalt nanoparticlesen_US
dc.subject.keywordsynergistic effectsen_US
dc.titleCobalt Nanoparticles Embedded in Nitrogen-Doped Carbon for the Hydrogen Evolution Reactionen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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