There are no files associated with this item.
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 3151 | - |
dc.citation.number | 5 | - |
dc.citation.startPage | 3141 | - |
dc.citation.title | ENERGY & ENVIRONMENTAL SCIENCE | - |
dc.citation.volume | 14 | - |
dc.contributor.author | Yao, Liang | - |
dc.contributor.author | Liu, Yongpeng | - |
dc.contributor.author | Cho, Han-Hee | - |
dc.contributor.author | Xia, Meng | - |
dc.contributor.author | Sekar, Arvindh | - |
dc.contributor.author | Darwich, Barbara Primera | - |
dc.contributor.author | Wells, Rebekah A. | - |
dc.contributor.author | Yum, Jun-Ho | - |
dc.contributor.author | Ren, Dan | - |
dc.contributor.author | Gratzel, Michael | - |
dc.contributor.author | Guijarro, Nestor | - |
dc.contributor.author | Sivula, Kevin | - |
dc.date.accessioned | 2023-12-21T15:46:37Z | - |
dc.date.available | 2023-12-21T15:46:37Z | - |
dc.date.created | 2022-02-28 | - |
dc.date.issued | 2021-05 | - |
dc.description.abstract | Organic semiconductors (OSs) are emerging candidates as light-harvesting materials in photoelectrochemical (PEC) cells for direct solar-to-chemical conversion. Despite significant recent progress with OS-based photocathodes, the development of efficient and stable OS-based photoanodes remains a challenge. Here, we demonstrate the concept of an in situ formed covalent polymer network (CPN) in a hybrid CPN:SnO2 bulk-heterojunction (BHJ) to increase the photocurrent density (J(ph)) and stability of OS-based photoanodes for PEC splitting of hydroiodic acid (HI). Our results indicate that the CPN:SnO2 BHJ overcomes the limited exciton diffusion length in OSs and provides a J(ph) improvement of more than three orders of magnitude compared to equivalent bilayer heterojunctions. Furthermore, insight into the operation of the hybrid BHJ in direct contact with aqueous electrolyte is gained with electrochemical impedance spectroscopy and PEC measurements under varying pH. With 1 M HI (pH 0) as the electrolyte, an optimized CPN:SnO2 photoanode without catalyst or protection layer delivers a J(ph) of 3.3 mA cm(-2) at the thermodynamic potential of iodide oxidation (+0.54 V vs. the normal hydrogen electrode) and a continuous operation for 27 h (J(ph) loss of 12%), representing a new benchmark for OS photoanodes for solar-to-chemical conversion. Complete HI splitting is further demonstrated in an all-OS photocathode/photoanode PEC cell to produce H-2 and I-3(-) from simulated sunlight without applied bias. | - |
dc.identifier.bibliographicCitation | ENERGY & ENVIRONMENTAL SCIENCE, v.14, no.5, pp.3141 - 3151 | - |
dc.identifier.doi | 10.1039/d1ee00152c | - |
dc.identifier.issn | 1754-5692 | - |
dc.identifier.scopusid | 2-s2.0-85107281603 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/57323 | - |
dc.identifier.wosid | 000639548700001 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | A hybrid bulk-heterojunction photoanode for direct solar-to-chemical conversion | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary; Energy & Fuels; Engineering, Chemical; Environmental Sciences | - |
dc.relation.journalResearchArea | Chemistry; Energy & Fuels; Engineering; Environmental Sciences & Ecology | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | PHOTOELECTROCHEMICAL WATER OXIDATION | - |
dc.subject.keywordPlus | PHOTOCATALYSIS SYSTEM | - |
dc.subject.keywordPlus | HYDROGEN-PRODUCTION | - |
dc.subject.keywordPlus | H-2 EVOLUTION | - |
dc.subject.keywordPlus | DRIVEN | - |
dc.subject.keywordPlus | PHTHALOCYANINE | - |
dc.subject.keywordPlus | STABILITY | - |
dc.subject.keywordPlus | PHOTOCATHODES | - |
dc.subject.keywordPlus | BILAYER | - |
dc.subject.keywordPlus | FILMS | - |
Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Tel : 052-217-1404 / Email : scholarworks@unist.ac.kr
Copyright (c) 2023 by UNIST LIBRARY. All rights reserved.
ScholarWorks@UNIST was established as an OAK Project for the National Library of Korea.