Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김종호 | - |
dc.date.accessioned | 2022-10-28T04:49:00Z | - |
dc.date.available | 2022-10-28T04:49:00Z | - |
dc.date.issued | 2022-04 | - |
dc.identifier.citation | Nano Convergence, v. 9, NO. 1, article no. 17, Page. 1-10 | en_US |
dc.identifier.issn | 2196-5404 | en_US |
dc.identifier.uri | https://nanoconvergencejournal.springeropen.com/articles/10.1186/s40580-022-00308-8 | en_US |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/175952 | - |
dc.description.abstract | N-Doped carbon electrocatalysts are a promising alternative to precious metal catalysts to promote oxygen reduction reaction (ORR). However, it remains a challenge to design the desired active sites on carbon skeletons in a controllable manner for ORR. Herein, we developed a facile approach based on oxygen-mediated solvothermal radical reaction (OSRR) for preparation of N-doped carbon electrocatalysts with a pre-designed active site and modulated catalytic activity for ORR. In the OSRR, 2-methylimidazole reacted with Co and Mn salts to form an active site precursor (MnCo-Mlm) in N-methyl-2-pyrrolidone (NMP) at room temperature. Then, the reaction temperature increased to 140 degrees C under an oxygen atmosphere to generate NMP radicals, followed by their polymerization with the pre-formed MnCo-Mlm to produce Mn-coupled Co nanoparticle-embedded N-doped carbon framework (MnCo-NCF). The MnCo-NCF showed uniform dispersion of nitrogen atoms and Mn-doped Co nanoparticles on the carbon skeleton with micropores and mesopores. The MnCo-NCF exhibited higher electrocatalytic activity for ORR than did a Co nanoparticle only-incorporated carbon framework due to the improved charge transfer from the Mn-doped Co nanoparticles to the carbon skeleton. In addition, the Zn-air battery assembled with MnCo-NCF had superior performance and durability to the battery using commercial Pt/C. This facile approach can be extended for designing carbon electrocatalysts with desired active sites to promote specific reactions. | en_US |
dc.description.sponsorship | The authors are grateful to Hanyang University for providing necessary facilities. | en_US |
dc.language | en | en_US |
dc.publisher | Springer | Korea Nano Technology Research Society | en_US |
dc.subject | Dual metal incorporation | en_US |
dc.subject | N-doped carbon framework | en_US |
dc.subject | Oxygen electrocatalyst | en_US |
dc.subject | Oxygen reduction reaction | en_US |
dc.subject | Oxygen-mediated solvothermal radical reaction | en_US |
dc.subject | Zn-air battery | en_US |
dc.title | Modulating the electrocatalytic activity of N-doped carbon frameworks via coupling with dual metals for Zn–air batteries | en_US |
dc.type | Article | en_US |
dc.relation.no | 1 | - |
dc.relation.volume | 9 | - |
dc.identifier.doi | 10.1186/s40580-022-00308-8 | en_US |
dc.relation.page | 1-10 | - |
dc.relation.journal | Nano Convergence | - |
dc.contributor.googleauthor | Park, Jung Hyun | - |
dc.contributor.googleauthor | Shin, Jae-Hoon | - |
dc.contributor.googleauthor | Ju, Jong-Min | - |
dc.contributor.googleauthor | Lee, Jun-Hyeong | - |
dc.contributor.googleauthor | Choi, Chanhee | - |
dc.contributor.googleauthor | So, Yoonhee | - |
dc.contributor.googleauthor | Lee, Hyunji | - |
dc.contributor.googleauthor | Kim, Jong-Ho | - |
dc.sector.campus | E | - |
dc.sector.daehak | 공학대학 | - |
dc.sector.department | 재료화학공학과 | - |
dc.identifier.pid | kjh75 | - |
dc.identifier.article | 17 | - |
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