Cobalt phosphate-modified barium-doped tantalum nitride nanorod photoanode with 1.5% solar energy conversion efficiency

Handle URI:
http://hdl.handle.net/10754/563035
Title:
Cobalt phosphate-modified barium-doped tantalum nitride nanorod photoanode with 1.5% solar energy conversion efficiency
Authors:
Li, Yanbo; Zhang, Li; Torres-Pardo, Almudena; González- Calbet, José María González; Ma, Yanhang; Oleynikov, Peter; Terasaki, Osamu; Asahina, Shunsuke; Shima, Masahide; Cha, Dong Kyu; Zhao, L. J.; Takanabe, Kazuhiro ( 0000-0001-5374-9451 ) ; Kubota, Jun; Domen, Kazunari
Abstract:
Spurred by the decreased availability of fossil fuels and global warming, the idea of converting solar energy into clean fuels has been widely recognized. Hydrogen produced by photoelectrochemical water splitting using sunlight could provide a carbon dioxide lean fuel as an alternative to fossil fuels. A major challenge in photoelectrochemical water splitting is to develop an efficient photoanode that can stably oxidize water into oxygen. Here we report an efficient and stable photoanode that couples an active barium-doped tantalum nitride nanostructure with a stable cobalt phosphate co-catalyst. The effect of barium doping on the photoelectrochemical activity of the photoanode is investigated. The photoanode yields a maximum solar energy conversion efficiency of 1.5%, which is more than three times higher than that of state-of-the-art single-photon photoanodes. Further, stoichiometric oxygen and hydrogen are stably produced on the photoanode and the counter electrode with Faraday efficiency of almost unity for 100 min. © 2013 Macmillan Publishers Limited. All rights reserved.
KAUST Department:
KAUST Catalysis Center (KCC); Physical Sciences and Engineering (PSE) Division; Chemical Science Program; Core Labs; Catalysis for Energy Conversion (CatEC)
Publisher:
Nature Publishing Group
Journal:
Nature Communications
Issue Date:
3-Oct-2013
DOI:
10.1038/ncomms3566
Type:
Article
ISSN:
20411723
Sponsors:
This work was supported in part by a Grant-in-Aid for Specially Promoted Research (23000009) from Japan Society for the Promotion of Science (JSPS) and the Advanced Low Carbon Technology Research and Development Program (ALCA) of the Japan Science and Technology Agency (JST). Y.L. acknowledges support from JSPS as a postdoctoral fellow. P.O. and O.T. acknowledge VR, EXSELENT and 3DEM-NATUR, Sweden and WCU(R-31-2008-000-10055-0, Korea) for support. J.M.G.-C. and A. T.-P. acknowledge financial support by the Spanish Ministerio de Ciencia e Innovacion (MAT2011-23068 and CSD2009-00013) and facilities provided by the National Centre for Electron Microscopy (UCM, Spain). Research by A. T.-P. has been also supported by a PICATA postdoctoral fellowship of the Moncloa Campus of International Excellence (UCM).
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Chemical Science Program; KAUST Catalysis Center (KCC)

Full metadata record

DC FieldValue Language
dc.contributor.authorLi, Yanboen
dc.contributor.authorZhang, Lien
dc.contributor.authorTorres-Pardo, Almudenaen
dc.contributor.authorGonzález- Calbet, José María Gonzálezen
dc.contributor.authorMa, Yanhangen
dc.contributor.authorOleynikov, Peteren
dc.contributor.authorTerasaki, Osamuen
dc.contributor.authorAsahina, Shunsukeen
dc.contributor.authorShima, Masahideen
dc.contributor.authorCha, Dong Kyuen
dc.contributor.authorZhao, L. J.en
dc.contributor.authorTakanabe, Kazuhiroen
dc.contributor.authorKubota, Junen
dc.contributor.authorDomen, Kazunarien
dc.date.accessioned2015-08-03T11:34:15Zen
dc.date.available2015-08-03T11:34:15Zen
dc.date.issued2013-10-03en
dc.identifier.issn20411723en
dc.identifier.doi10.1038/ncomms3566en
dc.identifier.urihttp://hdl.handle.net/10754/563035en
dc.description.abstractSpurred by the decreased availability of fossil fuels and global warming, the idea of converting solar energy into clean fuels has been widely recognized. Hydrogen produced by photoelectrochemical water splitting using sunlight could provide a carbon dioxide lean fuel as an alternative to fossil fuels. A major challenge in photoelectrochemical water splitting is to develop an efficient photoanode that can stably oxidize water into oxygen. Here we report an efficient and stable photoanode that couples an active barium-doped tantalum nitride nanostructure with a stable cobalt phosphate co-catalyst. The effect of barium doping on the photoelectrochemical activity of the photoanode is investigated. The photoanode yields a maximum solar energy conversion efficiency of 1.5%, which is more than three times higher than that of state-of-the-art single-photon photoanodes. Further, stoichiometric oxygen and hydrogen are stably produced on the photoanode and the counter electrode with Faraday efficiency of almost unity for 100 min. © 2013 Macmillan Publishers Limited. All rights reserved.en
dc.description.sponsorshipThis work was supported in part by a Grant-in-Aid for Specially Promoted Research (23000009) from Japan Society for the Promotion of Science (JSPS) and the Advanced Low Carbon Technology Research and Development Program (ALCA) of the Japan Science and Technology Agency (JST). Y.L. acknowledges support from JSPS as a postdoctoral fellow. P.O. and O.T. acknowledge VR, EXSELENT and 3DEM-NATUR, Sweden and WCU(R-31-2008-000-10055-0, Korea) for support. J.M.G.-C. and A. T.-P. acknowledge financial support by the Spanish Ministerio de Ciencia e Innovacion (MAT2011-23068 and CSD2009-00013) and facilities provided by the National Centre for Electron Microscopy (UCM, Spain). Research by A. T.-P. has been also supported by a PICATA postdoctoral fellowship of the Moncloa Campus of International Excellence (UCM).en
dc.publisherNature Publishing Groupen
dc.titleCobalt phosphate-modified barium-doped tantalum nitride nanorod photoanode with 1.5% solar energy conversion efficiencyen
dc.typeArticleen
dc.contributor.departmentKAUST Catalysis Center (KCC)en
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentChemical Science Programen
dc.contributor.departmentCore Labsen
dc.contributor.departmentCatalysis for Energy Conversion (CatEC)en
dc.identifier.journalNature Communicationsen
dc.contributor.institutionDepartment of Chemical System Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113 8656, Japanen
dc.contributor.institutionDepartamento de Química Inorgánica, Facultad de Químicas, Universidad Complutense, 28040 Madrid, Spainen
dc.contributor.institutionDepartment of Materials and Environmental Chemistry, Stockholm University, SE-10691 Stockholm, Swedenen
dc.contributor.institutionGraduate School of EEWS,WCU, KAIST, Daejeon 305 701, South Koreaen
dc.contributor.institutionSM Application Group, JEOL Ltd., 1-2 Musashino 3-Chome Akisima, Tokyo 196 8558, Japanen
kaust.authorCha, Dong Kyuen
kaust.authorTakanabe, Kazuhiroen
kaust.authorZhao, L. J.en
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