DC Field | Value | Language |
---|---|---|
dc.contributor.author | Mondal, Indranil | ko |
dc.contributor.author | Moon, Song Yi | ko |
dc.contributor.author | Kim, Heeyoung | ko |
dc.contributor.author | Park, Jeong Young | ko |
dc.date.accessioned | 2019-04-15T14:14:04Z | - |
dc.date.available | 2019-04-15T14:14:04Z | - |
dc.date.created | 2019-04-08 | - |
dc.date.issued | 2019-03 | - |
dc.identifier.citation | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.44, no.14, pp.7241 - 7251 | - |
dc.identifier.issn | 0360-3199 | - |
dc.identifier.uri | http://hdl.handle.net/10203/253971 | - |
dc.description.abstract | While 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, Ni2P was crystallized with an increase in the Ni delta+/Ni2+ 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 Ni2P, which reveals the underlying mechanism for the role of the p-n junction for enhanced photoelectrochemical cell performance. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. | - |
dc.language | English | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | Hydrogen production by water reduction on Si photocathode coupled with Ni2P | - |
dc.type | Article | - |
dc.identifier.wosid | 000462102000020 | - |
dc.identifier.scopusid | 2-s2.0-85061798496 | - |
dc.type.rims | ART | - |
dc.citation.volume | 44 | - |
dc.citation.issue | 14 | - |
dc.citation.beginningpage | 7241 | - |
dc.citation.endingpage | 7251 | - |
dc.citation.publicationname | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | - |
dc.identifier.doi | 10.1016/j.ijhydene.2019.01.258 | - |
dc.contributor.localauthor | Park, Jeong Young | - |
dc.contributor.nonIdAuthor | Mondal, Indranil | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Hexagonal Ni2P | - |
dc.subject.keywordAuthor | Si photocathode | - |
dc.subject.keywordAuthor | p-n heterojunction | - |
dc.subject.keywordAuthor | Electronic structure | - |
dc.subject.keywordAuthor | Mott-Schottky analysis | - |
dc.subject.keywordPlus | NICKEL PHOSPHIDE | - |
dc.subject.keywordPlus | SILICON PHOTOCATHODES | - |
dc.subject.keywordPlus | MOLYBDENUM SULFIDE | - |
dc.subject.keywordPlus | HIGH-PERFORMANCE | - |
dc.subject.keywordPlus | RADIAL JUNCTION | - |
dc.subject.keywordPlus | EVOLUTION | - |
dc.subject.keywordPlus | EFFICIENT | - |
dc.subject.keywordPlus | GENERATION | - |
dc.subject.keywordPlus | CATALYST | - |
dc.subject.keywordPlus | ELECTROCATALYST | - |
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