Metal-Organic-Framework-Derived N-Doped Hierarchically Porous Carbon Polyhedrons Anchored on Crumpled Graphene Balls as Efficient Selenium Hosts for High-Performance Lithium-Selenium Batteries
DC Field | Value | Language |
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dc.contributor.author | Park, Seung-Keun | - |
dc.contributor.author | Park, Jul-Sung | - |
dc.contributor.author | Kang, Yun Chan | - |
dc.date.accessioned | 2021-09-02T11:32:46Z | - |
dc.date.available | 2021-09-02T11:32:46Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2018-05-16 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/75520 | - |
dc.description.abstract | Developing carbon scaffolds showing rational pore structures as cathode hosts is essential for achieving superior electrochemical performances of lithium-selenium (Li-Se) batteries. Hierarchically porous N-doped carbon polyhedrons anchored on crumpled graphene balls (NPC/CGBs) are synthesized by carbonizing a zeolitic imidazolate framework-8 (ZIF-8)/CGB composite precursor, producing an unprecedented effective host matrix for high-performance Li-Se batteries. Mesoporous CGBs obtained by one-pot spray pyrolysis are used as a highly conductive matrix for uniform polyhedral ZIF-8 growth. During carbonization, ZIF-8 polyhedrons on mesoporous CGBs are converted into N doped carbon polyhedrons showing abundant micropores, forming a high-surface area, high-pore-volume hierarchically porous NPC/CGB composite whose small unique pores effectively confine Se during melt diffusion, thereby providing conductive electron pathways. Thus, the integrated NPC/CGB-Se composite ensures high Se utilization originating from complete electrochemical reactions between Se and Li ions. The NPC/CGB-Se composite cathode exhibits high discharge capacities (998 and 462 mA h g(-1) at the 1st and 1000th cycles, respectively, at a 0.5 C current density), good capacity retention (68%, calculated from the 3rd cycle), and excellent rate capability. A discharge capacity of 409 mA h g-1 is achieved even at an extremely high (15.0 C) current density. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | LI-SE BATTERIES | - |
dc.subject | CONFINED SELENIUM | - |
dc.subject | OXIDE COMPOSITE | - |
dc.subject | RATE CAPABILITY | - |
dc.subject | ION BATTERIES | - |
dc.subject | CATHODE | - |
dc.subject | STORAGE | - |
dc.subject | ANODE | - |
dc.subject | NANOPARTICLES | - |
dc.subject | SULFUR | - |
dc.title | Metal-Organic-Framework-Derived N-Doped Hierarchically Porous Carbon Polyhedrons Anchored on Crumpled Graphene Balls as Efficient Selenium Hosts for High-Performance Lithium-Selenium Batteries | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Park, Jul-Sung | - |
dc.contributor.affiliatedAuthor | Kang, Yun Chan | - |
dc.identifier.doi | 10.1021/acsami.8b03104 | - |
dc.identifier.scopusid | 2-s2.0-85046474738 | - |
dc.identifier.wosid | 000432753800034 | - |
dc.identifier.bibliographicCitation | ACS APPLIED MATERIALS & INTERFACES, v.10, no.19, pp.16531 - 16540 | - |
dc.relation.isPartOf | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.title | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.volume | 10 | - |
dc.citation.number | 19 | - |
dc.citation.startPage | 16531 | - |
dc.citation.endPage | 16540 | - |
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.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | LI-SE BATTERIES | - |
dc.subject.keywordPlus | CONFINED SELENIUM | - |
dc.subject.keywordPlus | OXIDE COMPOSITE | - |
dc.subject.keywordPlus | RATE CAPABILITY | - |
dc.subject.keywordPlus | ION BATTERIES | - |
dc.subject.keywordPlus | CATHODE | - |
dc.subject.keywordPlus | STORAGE | - |
dc.subject.keywordPlus | ANODE | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | SULFUR | - |
dc.subject.keywordAuthor | crumpled graphene balls | - |
dc.subject.keywordAuthor | metal-organic frameworks | - |
dc.subject.keywordAuthor | spray pyrolysis | - |
dc.subject.keywordAuthor | lithium-selenium batteries | - |
dc.subject.keywordAuthor | hierarchically porous materials | - |
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