Densely colonized isolated Cu-N single sites for efficient bifunctional electrocatalysts and rechargeable advanced Zn-air batteries
DC Field | Value | Language |
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dc.contributor.author | Wagh, Nayantara K. | - |
dc.contributor.author | Shinde, Sambhaji S. | - |
dc.contributor.author | Lee, Chi Ho | - |
dc.contributor.author | Jung, Jin-Young | - |
dc.contributor.author | Kim, Dong-Hyung | - |
dc.contributor.author | Kim, Sung-Hae | - |
dc.contributor.author | Lin, Chao | - |
dc.contributor.author | Lee, Sang Uck | - |
dc.contributor.author | Lee, Jung-Ho | - |
dc.date.accessioned | 2022-12-22T00:32:51Z | - |
dc.date.available | 2022-12-22T00:32:51Z | - |
dc.date.created | 2021-01-21 | - |
dc.date.issued | 2020-07 | - |
dc.identifier.issn | 0926-3373 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/181922 | - |
dc.description.abstract | The rational design of earth-abundant, highly efficient, and robust bifunctional oxygen electrocatalysts remains a contemporary challenge toward the widespread implementation of reversible metal-air batteries and fuel cells. Here, we report a universal strategy for the fabrication of single-atom (Cu, Co, and Fe) incorporated hollow nano-spheroids of nitrogen-deficient carbon nitride frameworks (CuSA@HNCNx. The interconnected three-dimensional 3D porous and hollow robust single-atom spheroid frameworks display a high surface area of 1286 m(2) g(-1), favorable electronic structure, local chemical coordination, effective density of active sites (Cu-N-x pyridinic, graphitic C-N etc.), and mass transport pathways. The obtained CuSA@HNCNx exhibited outstanding bifunctional reversible electrocatalytic activity and robustness for oxygen reduction and evolution reactions (ORR half-wave potential of 0.91 V, OER overpotential of 1.55 V at 10 mA cm(-2), Delta E = 0.64 V, 5000 cycles), outperforming benchmarked Pt/C and RuO2. Electrocatalytic activity towards ORR/OER was analyzed by n-band center correlation using density functional theory (DFT) calculations. Moreover, reversible alkaline Zn-air batteries with the designed CuSA@HNCNx cathode illustrated a high power 212 mW cm(-2), high energy density 1031 Wh kg(zn)(-1), and excellent discharge-charge cycle life of 1800 cycles for 300 h @10 mA cm(-2) with voltaic efficiency of 64.51 %. Notably, all-solid-state flexible ZABs showed long cycle life of 250 h with 1500 cycles at 25 mA cm(-2) with efficiency of 66.31 %. This unique strategy offers controlled design of entangled single-atom frameworks as advanced cathodes for next-generation energy storage technology. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | Elsevier BV | - |
dc.title | Densely colonized isolated Cu-N single sites for efficient bifunctional electrocatalysts and rechargeable advanced Zn-air batteries | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Sang Uck | - |
dc.contributor.affiliatedAuthor | Lee, Jung-Ho | - |
dc.identifier.doi | 10.1016/j.apcatb.2020.118746 | - |
dc.identifier.scopusid | 2-s2.0-85079374259 | - |
dc.identifier.wosid | 000521513300019 | - |
dc.identifier.bibliographicCitation | Applied Catalysis B: Environmental, v.268, pp.1 - 9 | - |
dc.relation.isPartOf | Applied Catalysis B: Environmental | - |
dc.citation.title | Applied Catalysis B: Environmental | - |
dc.citation.volume | 268 | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 9 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.subject.keywordPlus | METAL-ORGANIC FRAMEWORKS | - |
dc.subject.keywordPlus | OXYGEN REDUCTION | - |
dc.subject.keywordPlus | DOPED GRAPHENE | - |
dc.subject.keywordPlus | EVOLUTION | - |
dc.subject.keywordPlus | ELECTRODES | - |
dc.subject.keywordPlus | CATALYSTS | - |
dc.subject.keywordAuthor | Single atoms | - |
dc.subject.keywordAuthor | Carbon nitride spheroids | - |
dc.subject.keywordAuthor | Alkaline reversible zn-air batteries | - |
dc.subject.keywordAuthor | Robust bifunctional oxygen catalysts | - |
dc.subject.keywordAuthor | Template-free synthesis strategy | - |
dc.subject.keywordAuthor | DFT | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0926337320301612 | - |
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