Super-Expansion of Assembled Reduced Graphene Oxide Interlayers by Segregation of Al Nanoparticle Pillars for High-Capacity Na-Ion Battery Anodes
DC Field | Value | Language |
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dc.contributor.author | Pyo, SeongJi | - |
dc.contributor.author | Eom, Wonsik | - |
dc.contributor.author | Kim, You Jin | - |
dc.contributor.author | Lee, Sang Hoon | - |
dc.contributor.author | Han, Tae Hee | - |
dc.contributor.author | Ryu, Won-Hee | - |
dc.date.available | 2021-02-22T05:24:36Z | - |
dc.date.issued | 2020-05 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.issn | 1944-8252 | - |
dc.identifier.uri | https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/1487 | - |
dc.description.abstract | The applicability of Na-ion batteries is contingent on breakthroughs in alternative electrode materials that have high capacities and which are economically viable. Unfortunately, conventional graphite anodes for Li-ion battery systems do not allow Na-ion accommodation into their interlayer space owing to the large ionic radius and low stabilizing energy of Na in graphite. Here, we suggest a promising strategy for significantly increasing Na capacity by expanding the axial slab space of graphite. We successfully synthesized reconstructed graphite materials via self-assembly of negative graphite oxide (GO) flakes and Al cation (positive) pillars and by subsequent chemical reaction of the obtained Al-GO materials. Al pillars, atomically distributed in graphite interlayers, can extend the slab space by up to similar to 7 angstrom, which is a 2-fold interlayer distance of pristine graphite. An exceptionally high capacity of 780 mAh/g is demonstrated for reconstructed graphite anodes with Al pillars, compared with rGO materials (210 mAh/g). We investigated the electrochemical reaction mechanism and structural changes associated with discharge and charge to emphasize the benefit of using reconstructed graphite as anodes in Na-ion batteries. Our strategy of modifying the interlayer distance by introducing metallic pillars between the layers can help address the low capacity of carbonaceous anodes. | - |
dc.format.extent | 8 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Super-Expansion of Assembled Reduced Graphene Oxide Interlayers by Segregation of Al Nanoparticle Pillars for High-Capacity Na-Ion Battery Anodes | - |
dc.type | Article | - |
dc.publisher.location | 미국 | - |
dc.identifier.doi | 10.1021/acsami.0c00659 | - |
dc.identifier.scopusid | 2-s2.0-85085536044 | - |
dc.identifier.wosid | 000537731900013 | - |
dc.identifier.bibliographicCitation | ACS APPLIED MATERIALS & INTERFACES, v.12, no.21, pp 23781 - 23788 | - |
dc.citation.title | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.volume | 12 | - |
dc.citation.number | 21 | - |
dc.citation.startPage | 23781 | - |
dc.citation.endPage | 23788 | - |
dc.type.docType | Article | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | LONG CYCLE LIFE | - |
dc.subject.keywordPlus | HARD-CARBON | - |
dc.subject.keywordPlus | ELECTRODE MATERIALS | - |
dc.subject.keywordPlus | STORAGE MECHANISM | - |
dc.subject.keywordPlus | FUNCTIONAL-GROUPS | - |
dc.subject.keywordPlus | RATE CAPABILITY | - |
dc.subject.keywordPlus | HIGH-POWER | - |
dc.subject.keywordPlus | NANOFIBERS | - |
dc.subject.keywordPlus | INTERCALATION | - |
dc.subject.keywordPlus | INSERTION | - |
dc.subject.keywordAuthor | reconstructed graphite | - |
dc.subject.keywordAuthor | anode | - |
dc.subject.keywordAuthor | Na ion battery | - |
dc.subject.keywordAuthor | metallic pillar | - |
dc.subject.keywordAuthor | reduced graphite oxide | - |
dc.identifier.url | https://pubs.acs.org/doi/10.1021/acsami.0c00659 | - |
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