Freestanding interlayers for Li-S batteries: design and synthesis of hierarchically porous N-doped C nanofibers comprising vanadium nitride quantum dots and MOF-derived hollow N-doped C nanocages
DC Field | Value | Language |
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dc.contributor.author | Saroha, Rakesh | - |
dc.contributor.author | Oh, Jang Hyeok | - |
dc.contributor.author | Seon, Young Hoe | - |
dc.contributor.author | Kang, Yun Chan | - |
dc.contributor.author | Lee, Jae Seob | - |
dc.contributor.author | Jeong, Do Won | - |
dc.contributor.author | Cho, Jung Sang | - |
dc.date.accessioned | 2021-11-19T16:40:51Z | - |
dc.date.available | 2021-11-19T16:40:51Z | - |
dc.date.created | 2021-08-30 | - |
dc.date.issued | 2021-05-21 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/128014 | - |
dc.description.abstract | The introduction of a functional interlayer between the cathode and anode in lithium-sulfur battery (LSB) technology results in significant improvements in electrochemical performance. Here, we developed hierarchically structured porous, conductive, and multifunctional N-doped carbon (N-C) nanofibers comprising homogeneously dispersed vanadium nitride quantum dots and hollow N-C nanocages as functional interlayers for advanced LSBs. The freestanding interlayer contains well-developed long-range channels and numerous interconnected hollow N-C nanocages derived from the metal-organic framework. Furthermore, the presence of a N-C framework and vanadium nitride quantum dots measuring several nanometers improves the redox reaction kinetics and provides numerous chemisorption sites for the effective trapping and reuse of lithium polysulfide. As a result, the assembled Li-S cell employing the unique nanostructured freestanding interlayer exhibits superior rate capability and stable cycling performance (decay rate of 0.02% per cycle at 0.5C) considering the high sulfur content (80 wt%) and loading (ca. 4 mg cm(-2)) in the sulfur electrodes. Even with an ultra-high sulfur loading of 11.0 mg cm(-2), the Li-S cell delivered a stable areal capacity of 5.0 mA h cm(-2) after 100 charge-discharge cycles at 0.05C. Thus, the uniquely nanostructured interlayer shows high potential for the development of advanced LSBs utilizing pure sulfur electrodes with realistic battery parameters. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Freestanding interlayers for Li-S batteries: design and synthesis of hierarchically porous N-doped C nanofibers comprising vanadium nitride quantum dots and MOF-derived hollow N-doped C nanocages | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kang, Yun Chan | - |
dc.identifier.doi | 10.1039/d1ta01802g | - |
dc.identifier.scopusid | 2-s2.0-85106204824 | - |
dc.identifier.wosid | 000646800700001 | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.9, no.19, pp.11651 - 11664 | - |
dc.relation.isPartOf | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 9 | - |
dc.citation.number | 19 | - |
dc.citation.startPage | 11651 | - |
dc.citation.endPage | 11664 | - |
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 | - |
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