Facile fabrication of Si-embedded amorphous carbon@graphitic carbon composite microspheres via spray drying as high-performance lithium-ion battery anodes
DC Field | Value | Language |
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dc.contributor.author | Yang, Su Hyun | - |
dc.contributor.author | Kim, Jin Koo | - |
dc.contributor.author | Jung, Dae-Soo | - |
dc.contributor.author | Kang, Yun Chan | - |
dc.date.accessioned | 2022-11-17T07:40:32Z | - |
dc.date.available | 2022-11-17T07:40:32Z | - |
dc.date.created | 2022-11-17 | - |
dc.date.issued | 2022-12-30 | - |
dc.identifier.issn | 0169-4332 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/145611 | - |
dc.description.abstract | Silicon-nanoparticle-embedded amorphous carbon-graphitic carbon composite microspheres (denoted as Si/ AC@GC) with numerous empty voids are synthesized using a spray drying process. Spray dried composite microspheres consisting of Si nanopowders, dextrin, and iron salt are transformed to uniquely structured Si/ AC@GC microspheres via one-step carbonization followed by acid etching. The in situ formation of graphitic carbon with high electrical conductivity within the Si-C composite at a low carbonization temperature (700 degrees C) is achieved by applying a metallic Fe nanocatalyst. The Si/AC@GC microspheres exhibit higher electrochemical properties than bare Si nanopowders and Si/amorphous carbon composite microspheres (denoted as Si/AC) with filled structures. The synergistic effects of structural merits owing to the spherical morphology with empty nanovoids for liquid electrolyte penetration and a graphitic carbon layer with high electrical conductivity result in the superior lithium-ion storage performances of Si/AC@GC microsphere. The composite-based electrode delivers a high reversible capacity of 803 mA h g-1 after 200 cycles at 1.0 A g-1, indicating long-term cycling stability. Even at 5.0 A g-1, the electrode exhibits stable reversible discharge capacity of 589 mA h g-1 without significant capacity loss. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER | - |
dc.subject | NANOSCALE BUILDING-BLOCKS | - |
dc.subject | C COMPOSITE | - |
dc.subject | NANOPARTICLES | - |
dc.title | Facile fabrication of Si-embedded amorphous carbon@graphitic carbon composite microspheres via spray drying as high-performance lithium-ion battery anodes | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kang, Yun Chan | - |
dc.identifier.doi | 10.1016/j.apsusc.2022.154799 | - |
dc.identifier.scopusid | 2-s2.0-85138019012 | - |
dc.identifier.wosid | 000860227100002 | - |
dc.identifier.bibliographicCitation | APPLIED SURFACE SCIENCE, v.606 | - |
dc.relation.isPartOf | APPLIED SURFACE SCIENCE | - |
dc.citation.title | APPLIED SURFACE SCIENCE | - |
dc.citation.volume | 606 | - |
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 | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Coatings & Films | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.subject.keywordPlus | NANOSCALE BUILDING-BLOCKS | - |
dc.subject.keywordPlus | C COMPOSITE | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordAuthor | Silicon anode | - |
dc.subject.keywordAuthor | Lithium-ion batteries | - |
dc.subject.keywordAuthor | 3D microsphere structure | - |
dc.subject.keywordAuthor | Graphitic carbon | - |
dc.subject.keywordAuthor | Spray drying | - |
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