MOF-Derived CoSe2@N-Doped Carbon Matrix Confined in Hollow Mesoporous Carbon Nanospheres as High-Performance Anodes for Potassium-Ion Batteries
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yang, Su Hyun | - |
dc.contributor.author | Park, Seung-Keun | - |
dc.contributor.author | Kang, Yun Chan | - |
dc.date.accessioned | 2021-08-30T09:58:08Z | - |
dc.date.available | 2021-08-30T09:58:08Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2021-03-30 | - |
dc.identifier.issn | 2311-6706 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/52102 | - |
dc.description.abstract | HighlightsA novel vacuum-assisted strategy is proposed to form N-doped carbon-encapsulated CoSe2 nanocrystals within hollow mesoporous carbon nanospheres (CoSe2@NC/HMCS) via a solid-state reaction.The "dual confinement" by both the N-doped carbon matrix derived from 2-methylimidazole and the small-sized pores of the hollow mesoporous carbon nanospheres can effectively prevent the overgrowth of CoSe2 nanocrystals.CoSe2@NC/HMCS exhibits an excellent electrochemical performance as the anode material for KIBs in terms of cycling stability and rate capability. AbstractIn this work, a novel vacuum-assisted strategy is proposed to homogenously form Metal-organic frameworks within hollow mesoporous carbon nanospheres (HMCSs) via a solid-state reaction. The method is applied to synthesize an ultrafine CoSe2 nanocrystal@N-doped carbon matrix confined within HMCSs (denoted as CoSe2@NC/HMCS) for use as advanced anodes in high-performance potassium-ion batteries (KIBs). The approach involves a solvent-free thermal treatment to form a Co-based zeolitic imidazolate framework (ZIF-67) within the HMCS templates under vacuum conditions and the subsequent selenization. Thermal treatment under vacuum facilitates the infiltration of the cobalt precursor and organic linker into the HMCS and simultaneously transforms them into stable ZIF-67 particles without any solvents. During the subsequent selenization process, the "dual confinement system", composed of both the N-doped carbon matrix derived from the organic linker and the small-sized pores of HMCS, can effectively suppress the overgrowth of CoSe2 nanocrystals. Thus, the resulting uniquely structured composite exhibits a stable cycling performance (442 mAh g(-1) at 0.1 A g(-1) after 120 cycles) and excellent rate capability (263 mAh g(-1) at 2.0 A g(-1)) as the anode material for KIBs. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | SHANGHAI JIAO TONG UNIV PRESS | - |
dc.subject | N-DOPED CARBON | - |
dc.subject | METAL-ORGANIC FRAMEWORK | - |
dc.subject | LI-ION | - |
dc.subject | NANOPARTICLES | - |
dc.subject | COMPOSITE | - |
dc.subject | STORAGE | - |
dc.subject | SPHERES | - |
dc.subject | NANOFIBERS | - |
dc.subject | NANOTUBES | - |
dc.subject | CATHODE | - |
dc.title | MOF-Derived CoSe2@N-Doped Carbon Matrix Confined in Hollow Mesoporous Carbon Nanospheres as High-Performance Anodes for Potassium-Ion Batteries | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kang, Yun Chan | - |
dc.identifier.doi | 10.1007/s40820-020-00539-6 | - |
dc.identifier.scopusid | 2-s2.0-85094216048 | - |
dc.identifier.wosid | 000591376600009 | - |
dc.identifier.bibliographicCitation | NANO-MICRO LETTERS, v.13, no.1 | - |
dc.relation.isPartOf | NANO-MICRO LETTERS | - |
dc.citation.title | NANO-MICRO LETTERS | - |
dc.citation.volume | 13 | - |
dc.citation.number | 1 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.subject.keywordPlus | CATHODE | - |
dc.subject.keywordPlus | COMPOSITE | - |
dc.subject.keywordPlus | LI-ION | - |
dc.subject.keywordPlus | METAL-ORGANIC FRAMEWORK | - |
dc.subject.keywordPlus | N-DOPED CARBON | - |
dc.subject.keywordPlus | NANOFIBERS | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | NANOTUBES | - |
dc.subject.keywordPlus | SPHERES | - |
dc.subject.keywordPlus | STORAGE | - |
dc.subject.keywordAuthor | Cobalt selenides | - |
dc.subject.keywordAuthor | Electrode materials | - |
dc.subject.keywordAuthor | Hollow mesoporous carbon nanospheres | - |
dc.subject.keywordAuthor | Metal-organic frameworks | - |
dc.subject.keywordAuthor | Potassium-ion batteries | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.