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DC Field | Value | Language |
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dc.citation.number | 26 | - |
dc.citation.startPage | 1900945 | - |
dc.citation.title | ADVANCED ENERGY MATERIALS | - |
dc.citation.volume | 9 | - |
dc.contributor.author | Tran Van Tam | - |
dc.contributor.author | Kang, Sung Gu | - |
dc.contributor.author | Kim, Mun Ho | - |
dc.contributor.author | Lee, Seung Geol | - |
dc.contributor.author | Hur, Seung Hyun | - |
dc.contributor.author | Chung, Jin Suk | - |
dc.contributor.author | Choi, Won Mook | - |
dc.date.accessioned | 2024-03-20T11:35:12Z | - |
dc.date.available | 2024-03-20T11:35:12Z | - |
dc.date.created | 2024-03-20 | - |
dc.date.issued | 2019-07 | - |
dc.description.abstract | Herein, a facile, one-step hydrothermal route to synthesize novel all-carbon-based composites composed of B-doped graphene quantum dots anchored on a graphene hydrogel (GH-BGQD) is demonstrated. The obtained GH-BGQD material has a unique 3D architecture with high porosity and large specific surface area, exhibiting abundant catalytic active sites of B-GQDs as well as enhanced electrolyte mass transport and ion diffusion. Therefore, the prepared GH-BGQD composites exhibit a superior trifunctional electrocatalytic activity toward the oxygen reduction reaction, oxygen evolution reaction, and hydrogen evolution reaction with excellent long-term stability and durability comparable to those of commercial Pt/C and Ir/C catalysts. A flexible solid-state Zn-air battery using a GH-BGQD air electrode achieves an open-circuit voltage of 1.40 V, a stable discharge voltage of 1.23 V for 100 h, a specific capacity of 687 mAh g(-1), and a peak power density of 112 mW cm(-2). Also, a water electrolysis cell using GH-BGQD electrodes delivers a current density of 10 mA cm(-2) at cell voltage of 1.61 V, with remarkable stability during 70 h of operation. Finally, the trifunctional GH-BGQD catalyst is employed for water electrolysis cell powered by the prepared Zn-air batteries, providing a new strategy for the carbon-based multifunctional electrocatalysts for electrochemical energy devices. | - |
dc.identifier.bibliographicCitation | ADVANCED ENERGY MATERIALS, v.9, no.26, pp.1900945 | - |
dc.identifier.doi | 10.1002/aenm.201900945 | - |
dc.identifier.issn | 1614-6832 | - |
dc.identifier.scopusid | 2-s2.0-85078679856 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/81714 | - |
dc.identifier.wosid | 000477779200005 | - |
dc.language | 영어 | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Novel Graphene Hydrogel/B-Doped Graphene Quantum Dots Composites as Trifunctional Electrocatalysts for Zn-Air Batteries and Overall Water Splitting | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter | - |
dc.relation.journalResearchArea | Chemistry; Energy & Fuels; Materials Science; Physics | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | graphene hydrogels | - |
dc.subject.keywordAuthor | graphene quantum dots | - |
dc.subject.keywordAuthor | trifunctional catalysts | - |
dc.subject.keywordAuthor | water electrolysis | - |
dc.subject.keywordAuthor | Zn-air batteries | - |
dc.subject.keywordPlus | OXYGEN REDUCTION REACTION | - |
dc.subject.keywordPlus | CARBON | - |
dc.subject.keywordPlus | CATALYSTS | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | BORON | - |
dc.subject.keywordPlus | STRATEGIES | - |
dc.subject.keywordPlus | SINGLE | - |
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