Pitch-derived yolk-shell-structured carbon microspheres as efficient sulfur host materials and their application as cathode material for Li-S batteries
DC Field | Value | Language |
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dc.contributor.author | Park, Gi Dae | - |
dc.contributor.author | Jung, Dae Soo | - |
dc.contributor.author | Lee, Jung-Kul | - |
dc.contributor.author | Kang, Yun Chan | - |
dc.date.accessioned | 2021-09-01T04:45:03Z | - |
dc.date.available | 2021-09-01T04:45:03Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2019-10-01 | - |
dc.identifier.issn | 1385-8947 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/62563 | - |
dc.description.abstract | Submicron and micron-sized carbon spheres with high electrical conductivity, micro-mesoporous structure, and empty space are considered ideal sulfur host materials for Li-S batteries. In this study, a new and efficient strategy for the synthesis of yolk-shell-structured carbon microspheres with multishells is introduced. Pitch-derived carbon microspheres with yolk-shell structure, high pore volume, and high electrical conductivity are synthesized by applying yolk-shell-structured Fe2O3 microspheres as a sacrificial template. Pitch-infiltrated Fe2O3 microspheres transform into yolk-shell-structured carbon (YS_C) microspheres with a specific conductivity of 0.9 S cm(-1) after post-treatment and etching with an HCl solution. The discharge capacity of the sulfur-loaded YS_C microspheres for the 200th cycle at a current density of 0.5 C is 686 mA h g(-1), and their reversible capacity after 800 cycles at a high current density of 2 C is 412 mA h g(-1). In addition, the sulfur-loaded YS_C microspheres show excellent cycling performance, despite their very high sulfur loading of 70 wt%. The excellent cycling and rate performances of the sulfur-loaded YS_C microspheres are attributed to the synergistic effect of the high electrical conductivity of YS_C microspheres, loading of amorphous and ultrafine sulfur, and empty shell layers. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.subject | HIERARCHICAL POROUS CARBON | - |
dc.subject | SPRAY-DRYING PROCESS | - |
dc.subject | COAL-TAR PITCH | - |
dc.subject | RATE CAPABILITY | - |
dc.subject | LITHIUM | - |
dc.subject | GRAPHENE | - |
dc.subject | ANODE | - |
dc.subject | NANOSPHERES | - |
dc.subject | STABILITY | - |
dc.subject | PARTICLES | - |
dc.title | Pitch-derived yolk-shell-structured carbon microspheres as efficient sulfur host materials and their application as cathode material for Li-S batteries | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kang, Yun Chan | - |
dc.identifier.doi | 10.1016/j.cej.2019.05.038 | - |
dc.identifier.scopusid | 2-s2.0-85065562860 | - |
dc.identifier.wosid | 000471682900036 | - |
dc.identifier.bibliographicCitation | CHEMICAL ENGINEERING JOURNAL, v.373, pp.382 - 392 | - |
dc.relation.isPartOf | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.title | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.volume | 373 | - |
dc.citation.startPage | 382 | - |
dc.citation.endPage | 392 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.subject.keywordPlus | HIERARCHICAL POROUS CARBON | - |
dc.subject.keywordPlus | SPRAY-DRYING PROCESS | - |
dc.subject.keywordPlus | COAL-TAR PITCH | - |
dc.subject.keywordPlus | RATE CAPABILITY | - |
dc.subject.keywordPlus | LITHIUM | - |
dc.subject.keywordPlus | GRAPHENE | - |
dc.subject.keywordPlus | ANODE | - |
dc.subject.keywordPlus | NANOSPHERES | - |
dc.subject.keywordPlus | STABILITY | - |
dc.subject.keywordPlus | PARTICLES | - |
dc.subject.keywordAuthor | Pitch derived carbon | - |
dc.subject.keywordAuthor | Yolk-shell structure | - |
dc.subject.keywordAuthor | Porous carbon | - |
dc.subject.keywordAuthor | Carbon microspheres | - |
dc.subject.keywordAuthor | Lithium-sulfur batteries | - |
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