Graphene wrapping as a protective clamping layer anchored to carbon nanofibers encapsulating Si nanoparticles for a Li-ion battery anode
DC Field | Value | Language |
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dc.contributor.author | Shin, J (Shin, Jungwoo) | - |
dc.contributor.author | Park, K (Park, Kyusung) | - |
dc.contributor.author | Ryu, WH (Ryu, Won-Hee) | - |
dc.contributor.author | Jung, JW (Jung, Ji-Won) | - |
dc.contributor.author | Kim, ID (Kim, Il-Doo) | - |
dc.date.accessioned | 2022-04-19T10:07:44Z | - |
dc.date.available | 2022-04-19T10:07:44Z | - |
dc.date.issued | 2014-11 | - |
dc.identifier.issn | 2040-3364 | - |
dc.identifier.issn | 2040-3372 | - |
dc.identifier.uri | https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/147377 | - |
dc.description.abstract | Carbon nanofibers encapsulating Si nanoparticles (CNFs/SiNPs) were prepared via an electrospinning method and chemically functionalized with 3-aminopropyltriethoxysilane (APS) to be grafted onto graphene oxide (GO). As a result, the thin and flexible GO, which exhibits a negative charge in aqueous solution, fully wrapped around the APS-functionalized CNFs with a positive surface charge via electrostatic self-assembly. After the formation of chemical bonds between the epoxy groups on GO and the amine groups in APS via an epoxy ring opening reaction, the GO was chemically reduced to a reduced graphene oxide (rGO). Electrochemical and morphological characterizations showed that capacity loss by structural degradation and electrolyte decomposition on Si surface were significantly suppressed in the rGOwrapped CNFs/SiNPs (CNFs/SiNPs@rGO). Superior capacities were consequently maintained for up to 200 cycles at a high current density (1048 mA h g(-1) at 890 mA g(-1)) compared to CNFs/SiNPs without the rGO wrapping (304 mA h g(-1) at 890 mA g(-1)). Moreover, the resistance of the SEI layer and charge transfer resistance were also considerably reduced by 24% and 88%, respectively. The described graphene wrapping offers a versatile way to enhance the mechanical integrity and electrochemical stability of Si composite anode | - |
dc.format.extent | 9 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Graphene wrapping as a protective clamping layer anchored to carbon nanofibers encapsulating Si nanoparticles for a Li-ion battery anode | - |
dc.type | Article | - |
dc.publisher.location | 영국 | - |
dc.identifier.doi | 10.1039/c4nr03173c | - |
dc.identifier.scopusid | 2-s2.0-84907995856 | - |
dc.identifier.wosid | 000344997500064 | - |
dc.identifier.bibliographicCitation | NANOSCALE, v.6, no.21, pp 12718 - 12726 | - |
dc.citation.title | NANOSCALE | - |
dc.citation.volume | 6 | - |
dc.citation.number | 21 | - |
dc.citation.startPage | 12718 | - |
dc.citation.endPage | 12726 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.identifier.url | https://pubs.rsc.org/en/content/articlelanding/2014/NR/C4NR03173C | - |
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