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indranil,mondal
나노물질및화학반응연구단
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Hydrogen production by water reduction on Si photocathode coupled with Ni 2 P

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dc.contributor.authorIndranil Mondal-
dc.contributor.authorSong Yi Moon-
dc.contributor.authorHeeyoung Kim-
dc.contributor.authorJeong Young Park-
dc.date.available2019-05-02T08:07:40Z-
dc.date.created2019-03-19-
dc.date.issued2019-03-
dc.identifier.issn0360-3199-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/5660-
dc.description.abstractWhile searching for an efficient, non-noble, earth-abundant catalyst for the hydrogen evolution reaction (HER), we synthesized hexagonal dinickel phosphide with different nanostructures using solvothermal phosphidation. Coupled atop p-type Si, this catalyst performed as a p-n heterojunction photocathode assembly and the performance varied when under different electrolyte media. Apart from changing the surface morphology, Ni 2 P was crystallized with an increase in the Ni δ+ /Ni 2+ ratio as the phosphidation temperature gradually increased. A systematic evaluation of the water splitting reaction shows that a very small amount of catalyst (>85% transmittance for the catalyst layer) exhibits a photocurrent of −10 mA cm −2 with a positive applied potential of 0.05 V versus reversible hydrogen electrode under simulated solar irradiation of AM 1.5G. We discuss the substantial charge transfer process at the depletion layer of the electrode/catalyst and the catalyst/electrolyte interface. Mott–Shottky analysis showed a shift in the flat band potential for Ni 2 P, which reveals the underlying mechanism for the role of the p-n junction for enhanced photoelectrochemical cell performance. © 2019 Hydrogen Energy Publications Ltd-
dc.description.uri1-
dc.language영어-
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD-
dc.subjectElectronic structure-
dc.subjectHexagonal Ni 2 P-
dc.subjectMott–Schottky analysis-
dc.subjectp-n heterojunction-
dc.subjectSi photocathode-
dc.titleHydrogen production by water reduction on Si photocathode coupled with Ni 2 P-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000462102000020-
dc.identifier.scopusid2-s2.0-85061798496-
dc.identifier.rimsid67549-
dc.contributor.affiliatedAuthorIndranil Mondal-
dc.contributor.affiliatedAuthorSong Yi Moon-
dc.contributor.affiliatedAuthorHeeyoung Kim-
dc.contributor.affiliatedAuthorJeong Young Park-
dc.identifier.doi10.1016/j.ijhydene.2019.01.258-
dc.identifier.bibliographicCitationINTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.44, no.14, pp.7241 - 7251-
dc.citation.titleINTERNATIONAL JOURNAL OF HYDROGEN ENERGY-
dc.citation.volume44-
dc.citation.number14-
dc.citation.startPage7241-
dc.citation.endPage7251-
dc.description.journalClass1-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.subject.keywordAuthorElectronic structure-
dc.subject.keywordAuthorHexagonal Ni 2 P-
dc.subject.keywordAuthorMott–Schottky analysis-
dc.subject.keywordAuthorp-n heterojunction-
dc.subject.keywordAuthorSi photocathode-
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > 1. Journal Papers (저널논문)
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