Vertically aligned Si@reduced graphene oxide frameworks for binder-free high-areal-capacity Li-ion battery anodes
DC Field | Value | Language |
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dc.contributor.author | Park, Sung-Woo | - |
dc.contributor.author | Shin, Hyun Jung | - |
dc.contributor.author | Heo, Young Jin | - |
dc.contributor.author | Kim, Dong-Wan | - |
dc.date.accessioned | 2021-11-20T10:40:30Z | - |
dc.date.available | 2021-11-20T10:40:30Z | - |
dc.date.created | 2021-08-30 | - |
dc.date.issued | 2021-05 | - |
dc.identifier.issn | 0363-907X | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/128104 | - |
dc.description.abstract | In this study, lamellar-structured, vertically aligned silicon@reduced graphene oxide frameworks (VA-Si@rGO) are developed for binder-free, high-areal-capacity lithium ion battery (LiB) anodes. First, SiO2/rGO frameworks with unidirectional pores are constructed via the gelation of SiO2/graphene oxide sol and subsequent freeze-casting. Afterwards, the sturdy constructed frameworks are maintained during a series of processes, namely magnesiothermic reduction, acid etching, and thermal carbon coating, which result in carbon-coated VA-Si@rGO. The electrode exhibits a high specific capacity, reversibility, and cycle stability, which are attributed to its unique inner porous structure, high Si yield, and uniform carbon layers. A high areal capacity of approximately 9 mAh cm(-2) could be achieved by increasing the initial sol concentration up to 23.5 wt%. Furthermore, even at a high current density of 3 mA cm(-2), the electrode delivered a high areal capacity of approximately 6 mAh cm(-2) and exhibited excellent stability with a high capacity retention of 68% after the 150th cycle. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | WILEY | - |
dc.title | Vertically aligned Si@reduced graphene oxide frameworks for binder-free high-areal-capacity Li-ion battery anodes | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Dong-Wan | - |
dc.identifier.doi | 10.1002/er.6461 | - |
dc.identifier.scopusid | 2-s2.0-85099935737 | - |
dc.identifier.wosid | 000611671900001 | - |
dc.identifier.bibliographicCitation | INTERNATIONAL JOURNAL OF ENERGY RESEARCH, v.45, no.6, pp.9704 - 9712 | - |
dc.relation.isPartOf | INTERNATIONAL JOURNAL OF ENERGY RESEARCH | - |
dc.citation.title | INTERNATIONAL JOURNAL OF ENERGY RESEARCH | - |
dc.citation.volume | 45 | - |
dc.citation.number | 6 | - |
dc.citation.startPage | 9704 | - |
dc.citation.endPage | 9712 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.relation.journalResearchArea | Nuclear Science & Technology | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Nuclear Science & Technology | - |
dc.subject.keywordAuthor | binder-free anode | - |
dc.subject.keywordAuthor | high areal capacity | - |
dc.subject.keywordAuthor | lithium-ion battery | - |
dc.subject.keywordAuthor | reduced graphene oxide | - |
dc.subject.keywordAuthor | silicon | - |
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