Carbon microspheres with well-developed micro- and mesopores as excellent selenium host materials for lithium-selenium batteries with superior performances
DC Field | Value | Language |
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dc.contributor.author | Park, Gi Dae | - |
dc.contributor.author | Kim, Jong Hwa | - |
dc.contributor.author | Lee, Jung-Kul | - |
dc.contributor.author | Kang, Yun Chan | - |
dc.date.accessioned | 2021-09-02T03:18:57Z | - |
dc.date.available | 2021-09-02T03:18:57Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2018-11-21 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/71816 | - |
dc.description.abstract | As host materials for efficient selenium storage and utilization, porous carbon materials with optimized and suitable pore structures are important in the development of high-performance Li-Se batteries. Herein, the synergetic effect of micro- and mesopores of carbon materials on the conversion reaction of loaded chain-structured Se-n is studied for superior Li-Se batteries. Carbon microspheres with well-developed micro- and mesopores are synthesized by spray pyrolysis. Carbon-vanadium oxide composite microspheres synthesized by spray pyrolysis transform into microporous carbon microspheres (P-carbon) by etching of vanadium oxide. An additional post-treatment of the spray-pyrolysis product at 400 degrees C yields carbon microspheres (A4-carbon) with well-developed micro- and mesopores by etching of vanadium oxide. The presence of both micro- and mesopores in carbon is desirable to achieve a fast conversion reaction of Se-n in the Se-loaded carbon microspheres. The Se-loaded carbon microspheres with well-developed micro- and mesopores (A4-carbon/Se) exhibit higher capacities and stable long-term cycling performances compared with similar microspheres with only micropores (P-carbon/Se). The discharge capacities of P-carbon/Se and A4-carbon/Se at the 500(th) cycle at a current density of 0.5 A g(-1) are 403 and 582 mA h g(-1), respectively. Moreover, A4-carbon/Se microspheres exhibit a stable reversible capacity of 343 mA h g(-1) after 2000 cycles even at a high current density of 2.0 A g(-1); their capacity retention calculated from the 3(rd) cycle is 87%. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | LI-SE BATTERIES | - |
dc.subject | ELECTROCHEMICAL PROPERTIES | - |
dc.subject | CONFINED SELENIUM | - |
dc.subject | CATHODE | - |
dc.subject | STORAGE | - |
dc.subject | SULFUR | - |
dc.subject | NANOSPHERES | - |
dc.subject | COMPOSITE | - |
dc.subject | ENERGY | - |
dc.subject | SIZE | - |
dc.title | Carbon microspheres with well-developed micro- and mesopores as excellent selenium host materials for lithium-selenium batteries with superior performances | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kang, Yun Chan | - |
dc.identifier.doi | 10.1039/c8ta08727j | - |
dc.identifier.scopusid | 2-s2.0-85056223347 | - |
dc.identifier.wosid | 000449701900018 | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.6, no.43, pp.21410 - 21418 | - |
dc.relation.isPartOf | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 6 | - |
dc.citation.number | 43 | - |
dc.citation.startPage | 21410 | - |
dc.citation.endPage | 21418 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | LI-SE BATTERIES | - |
dc.subject.keywordPlus | ELECTROCHEMICAL PROPERTIES | - |
dc.subject.keywordPlus | CONFINED SELENIUM | - |
dc.subject.keywordPlus | CATHODE | - |
dc.subject.keywordPlus | STORAGE | - |
dc.subject.keywordPlus | SULFUR | - |
dc.subject.keywordPlus | NANOSPHERES | - |
dc.subject.keywordPlus | COMPOSITE | - |
dc.subject.keywordPlus | ENERGY | - |
dc.subject.keywordPlus | SIZE | - |
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