DC Field | Value | Language |
---|---|---|
dc.contributor.author | Bera, Raj Kumar | ko |
dc.contributor.author | Park, Hongjun | ko |
dc.contributor.author | Ryoo, Ryong | ko |
dc.date.accessioned | 2021-11-19T06:40:44Z | - |
dc.date.available | 2021-11-19T06:40:44Z | - |
dc.date.created | 2021-08-24 | - |
dc.date.created | 2021-08-24 | - |
dc.date.created | 2021-08-24 | - |
dc.date.issued | 2021-11 | - |
dc.identifier.citation | CHEMELECTROCHEM, v.8, no.21, pp.4038 - 4046 | - |
dc.identifier.issn | 2196-0216 | - |
dc.identifier.uri | http://hdl.handle.net/10203/289278 | - |
dc.description.abstract | The design of active sites plays an important role in developing highly active oxygen electrocatalysts in Zn-air batteries (ZnABs). Here, we report the formation of cobalt (Co) nanoparticles and thin graphitic N-doped carbon (NC) supported on three-dimensional hierarchically porous graphene-like carbon (Co-NC/3DHPGC) to maximize the accessibility of Co-NC active sites for oxygen reduction/evolution reactions (ORR/OER). The produced Co-NC/3DHPGC exhibits a broad size distribution (5-30 nm) of Co nanoparticles dispersed on the external surface of 3DHPGC and coated with NC to a thickness of similar to 2 nm. We attributed the formation of Co nanoparticles with broad size distribution to the hierarchical porosity of 3DHPGC, which served as a cage to stabilize the Co nanoparticles and increase the metal dispersion; the produced Co nanoparticles catalyze the formation of graphitic NC. Compared with commercial Pt/C and RuO2 catalysts, the resultant Co-NC/3DHPGC exhibits excellent bifunctional ORR/OER electrocatalytic activity and high durability. The high electrocatalytic performance is ascribed to the accessibility of highly active Co-NC sites through mesopores of 3DHPGC. The ZnAB assembled with Co-NC/3DHPGC exhibits high energy density and efficiency. This systematic engineering and rational synthesis strategy may provide new insight into the development of high-performance oxygen electrocatalysts for metal-air batteries and fuel cell technology. | - |
dc.language | English | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Engineering Active Sites in Three-Dimensional Hierarchically Porous Graphene-Like Carbon with Co and N-Doped Carbon for High-Performance Zinc-Air Battery | - |
dc.type | Article | - |
dc.identifier.wosid | 000684735600001 | - |
dc.identifier.scopusid | 2-s2.0-85112370459 | - |
dc.type.rims | ART | - |
dc.citation.volume | 8 | - |
dc.citation.issue | 21 | - |
dc.citation.beginningpage | 4038 | - |
dc.citation.endingpage | 4046 | - |
dc.citation.publicationname | CHEMELECTROCHEM | - |
dc.identifier.doi | 10.1002/celc.202100807 | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Ryoo, Ryong | - |
dc.contributor.nonIdAuthor | Bera, Raj Kumar | - |
dc.contributor.nonIdAuthor | Park, Hongjun | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | 3D graphene-like carbon | - |
dc.subject.keywordAuthor | active site | - |
dc.subject.keywordAuthor | N-doped carbon | - |
dc.subject.keywordAuthor | bifunctional electrocatalyst | - |
dc.subject.keywordAuthor | Zn-air battery | - |
dc.subject.keywordPlus | ZEOLITE-TEMPLATED CARBON | - |
dc.subject.keywordPlus | OXYGEN REDUCTION | - |
dc.subject.keywordPlus | ELECTROCATALYSTS | - |
dc.subject.keywordPlus | EVOLUTION | - |
dc.subject.keywordPlus | CATALYSTS | - |
dc.subject.keywordPlus | FABRICATION | - |
dc.subject.keywordPlus | CONVERSION | - |
dc.subject.keywordPlus | NANOSHEETS | - |
dc.subject.keywordPlus | HYDROGEN | - |
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