DC Field | Value | Language |
---|---|---|
dc.contributor.author | Cha, Jun-Hwe | ko |
dc.contributor.author | Cho, Su-Ho | ko |
dc.contributor.author | Kim, Dong-Ha | ko |
dc.contributor.author | Jeon, Dogyeong | ko |
dc.contributor.author | Park, Seohak | ko |
dc.contributor.author | Jung, Ji-Won | ko |
dc.contributor.author | Kim, Il-Doo | ko |
dc.contributor.author | Choi, Sung-Yool | ko |
dc.date.accessioned | 2023-11-23T01:00:48Z | - |
dc.date.available | 2023-11-23T01:00:48Z | - |
dc.date.created | 2023-10-16 | - |
dc.date.created | 2023-10-16 | - |
dc.date.created | 2023-10-16 | - |
dc.date.created | 2023-10-16 | - |
dc.date.issued | 2023-11 | - |
dc.identifier.citation | ADVANCED MATERIALS, v.35, no.46 | - |
dc.identifier.issn | 0935-9648 | - |
dc.identifier.uri | http://hdl.handle.net/10203/315090 | - |
dc.description.abstract | High-entropy alloys (HEAs) provide unprecedented physicochemical properties over unary nanoparticles (NPs). According to the conventional alloying guideline (Hume–Rothery rule), however, only size-and-structure similar elements can be mixed, limiting the possible combinations of alloying elements. Recently, it has been reported that based on carbon thermal shocks (CTS) in a vacuum atmosphere at high temperature, ultrafast heating/cooling rates and high-entropy environment play a critical role in the synthesis of HEAs, ruling out the possibility of phase separation. Since the CTS requires conducting supports, the Joule-heating efficiencies rely on the carbon qualities, featuring difficulties in uniform heating along the large area. This work proposes a photo-thermal approach as an alternative and innovative synthetic method that is compatible with ambient air, large-area, remote process, and free of materials selection. Single flash irradiation on carbon nanofibers induced momentary high-temperature annealing (>1800 °C within 20 ms duration, and ramping/cooling rates >104 K s−1) to successfully decorate HEA NPs up to nine elements with excellent compatibility for large-scale synthesis (6.0 × 6.0 cm2 of carbon nanofiber paper). To demonstrate their feasibility toward applications, senary HEA NPs (PtIrFeNiCoCe) are designed and screened, showing high activity (ηoverall = 777 mV) and excellent stability (>5000 cycles) at the water splitting, including hydrogen evolution reactions and oxygen evolution reactions. | - |
dc.language | English | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Flash-Thermal Shock Synthesis of High-Entropy Alloys Toward High-Performance Water Splitting | - |
dc.type | Article | - |
dc.identifier.wosid | 001069561600001 | - |
dc.identifier.scopusid | 2-s2.0-85171687935 | - |
dc.type.rims | ART | - |
dc.citation.volume | 35 | - |
dc.citation.issue | 46 | - |
dc.citation.publicationname | ADVANCED MATERIALS | - |
dc.identifier.doi | 10.1002/adma.202305222 | - |
dc.contributor.localauthor | Kim, Il-Doo | - |
dc.contributor.localauthor | Choi, Sung-Yool | - |
dc.contributor.nonIdAuthor | Jung, Ji-Won | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | ambient air | - |
dc.subject.keywordAuthor | high-entropy alloys | - |
dc.subject.keywordAuthor | high-throughput processes | - |
dc.subject.keywordAuthor | photothermal effects | - |
dc.subject.keywordAuthor | water splitting | - |
dc.subject.keywordPlus | HYDROGEN EVOLUTION | - |
dc.subject.keywordPlus | ALKALINE | - |
dc.subject.keywordPlus | CATALYSTS | - |
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