Structural combination of polar hollow microspheres and hierarchical N-doped carbon nanotubes for high-performance Li-S batteries
DC Field | Value | Language |
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dc.contributor.author | Lee, Jun Yeob | - |
dc.contributor.author | Park, Gi Dae | - |
dc.contributor.author | Choi, Jae Hun | - |
dc.contributor.author | Kang, Yun Chan | - |
dc.date.accessioned | 2021-08-31T12:26:22Z | - |
dc.date.available | 2021-08-31T12:26:22Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2020-01-21 | - |
dc.identifier.issn | 2040-3364 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/57974 | - |
dc.description.abstract | Hierarchical structured materials constructed with conductive carbon materials have been extensively studied as S host materials for Li-S batteries. However, their outwardly developed hierarchical structures, which do not contain structures or materials to inhibit polysulfide dissolution, lead to the dissipation of dissolved polysulfides and poor dispersion properties during the slurry-making process, which results in non-uniformity in the cathodes. Herein, an assembly of polar materials (hollow structured SiO2 microspheres) and electrically conductive hierarchical N-doped bamboo-like carbon nanotubes (b-NCNTs) is designed as an efficient S host material for minimizing the dissolution of polysulfides during Li-S battery operations. Highly aligned and packed b-NCNTs are grown in hollow structured SiO2 microspheres. The SiO2 layer coated on the surface of the hollow CoFe2O4 microspheres plays a key role in the synthesis of easily dispersible hierarchical b-NCNTs microspheres (b-NCNTs@SiO2). The S-loaded b-NCNTs@SiO2 electrodes show better cycling stability than S-loaded b-NCNTs electrodes. The polysulfide trapping of the polar SiO2 layer and the well-developed b-NCNTs minimize the dissolution of polysulfides during cycling. In addition, the introduction of electronegative N atoms into the b-NCNTs lattice enhances their polysulfide trapping ability. The S-loaded b-NCNTs@SiO2 electrodes exhibit stable discharge capacities of >771 mA h g(-1) over 195 cycles at a current density of 0.5 C and a high reversible capacity of 486 mA h g(-1) even at a high current density of 5.0 C. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | LITHIUM-SULFUR BATTERIES | - |
dc.subject | MESOPOROUS SIO2 | - |
dc.subject | ANODE MATERIALS | - |
dc.subject | HIGH-CAPACITY | - |
dc.subject | CATHODE | - |
dc.subject | STORAGE | - |
dc.subject | NANOPARTICLES | - |
dc.subject | SPHERES | - |
dc.subject | SHELL | - |
dc.subject | CORE | - |
dc.title | Structural combination of polar hollow microspheres and hierarchical N-doped carbon nanotubes for high-performance Li-S batteries | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kang, Yun Chan | - |
dc.identifier.doi | 10.1039/c9nr09807k | - |
dc.identifier.scopusid | 2-s2.0-85078389914 | - |
dc.identifier.wosid | 000509545700088 | - |
dc.identifier.bibliographicCitation | NANOSCALE, v.12, no.3, pp.2142 - 2153 | - |
dc.relation.isPartOf | NANOSCALE | - |
dc.citation.title | NANOSCALE | - |
dc.citation.volume | 12 | - |
dc.citation.number | 3 | - |
dc.citation.startPage | 2142 | - |
dc.citation.endPage | 2153 | - |
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 | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.subject.keywordPlus | LITHIUM-SULFUR BATTERIES | - |
dc.subject.keywordPlus | MESOPOROUS SIO2 | - |
dc.subject.keywordPlus | ANODE MATERIALS | - |
dc.subject.keywordPlus | HIGH-CAPACITY | - |
dc.subject.keywordPlus | CATHODE | - |
dc.subject.keywordPlus | STORAGE | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | SPHERES | - |
dc.subject.keywordPlus | SHELL | - |
dc.subject.keywordPlus | CORE | - |
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