Nitrogen and sulfur co-doped graphene nanoribbons with well-ordered stepped edges for high-performance potassium-ion battery anodes
DC Field | Value | Language |
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dc.contributor.author | Back, Seoin | - |
dc.contributor.author | Yu, Seung-Ho | - |
dc.contributor.author | Piao, Yuanzhe | - |
dc.contributor.author | Choi, Juhyung | - |
dc.contributor.author | Jin, Aihua | - |
dc.contributor.author | Jung, Hyun Dong | - |
dc.contributor.author | Ko, Dongjin | - |
dc.contributor.author | Um, Ji Hyun | - |
dc.contributor.author | Choi, Yoon | - |
dc.contributor.author | Kim, So Hee | - |
dc.date.accessioned | 2022-06-10T04:41:05Z | - |
dc.date.available | 2022-06-10T04:41:05Z | - |
dc.date.created | 2022-06-10 | - |
dc.date.issued | 2022-06 | - |
dc.identifier.issn | 2405-8297 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/141814 | - |
dc.description.abstract | Graphitic carbon materials, particularly few-layered graphene, exhibit great potentials as potassium-ion battery (PIBs) anodes. However, bulk graphene-based ma-terials have the disordered structure owing to randomly stacked graphene layers, which causes the high migration barrier during K+ intercalation/deintercalation reactions and thus the surface-dominated capacitive response. Here, we present a novel nanoarchitecture of nitrogen and sulfur co-doped graphene nanoribbons with well-ordered stepped edges (NS-sGNR) via the electrochemical unzipping of multiwalled carbon nanotubes (MWCNTs) and the subsequent N/S co-doping process for high-performance PIB anodes. As an anode material for PIBs, the prepared sample exhibits high initial capacity (329.1 mAh g(-1) at 50 mA g(-1)), superior rate capability (211.7 mAh g(-1) at high current density, 2000 mA g(-1)), outstanding reversibility of K-staging, and stable long-term cyclability. Theoretical calculations were conducted to demonstrate that sGNRs with NS co-doping (NS-sGNR) exhibit much improved K+ intercalation properties, such as the K+ adsorption energy, charge transfer, and migration barriers, compared with the parallel-edged GNRs. Particularly, the migration barrier (the rate-determining step) can be substantially reduced at the stepped edges during K+ intercalation. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER | - |
dc.subject | TOTAL-ENERGY CALCULATIONS | - |
dc.subject | LITHIUM | - |
dc.subject | INTERCALATION | - |
dc.subject | ELECTRODES | - |
dc.subject | GRAPHITE | - |
dc.subject | STORAGE | - |
dc.subject | POINTS | - |
dc.subject | SODIUM | - |
dc.title | Nitrogen and sulfur co-doped graphene nanoribbons with well-ordered stepped edges for high-performance potassium-ion battery anodes | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Yu, Seung-Ho | - |
dc.identifier.doi | 10.1016/j.ensm.2022.03.041 | - |
dc.identifier.scopusid | 2-s2.0-85127115280 | - |
dc.identifier.wosid | 000797801000006 | - |
dc.identifier.bibliographicCitation | ENERGY STORAGE MATERIALS, v.48, pp.325 - 334 | - |
dc.relation.isPartOf | ENERGY STORAGE MATERIALS | - |
dc.citation.title | ENERGY STORAGE MATERIALS | - |
dc.citation.volume | 48 | - |
dc.citation.startPage | 325 | - |
dc.citation.endPage | 334 | - |
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.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | TOTAL-ENERGY CALCULATIONS | - |
dc.subject.keywordPlus | LITHIUM | - |
dc.subject.keywordPlus | INTERCALATION | - |
dc.subject.keywordPlus | ELECTRODES | - |
dc.subject.keywordPlus | GRAPHITE | - |
dc.subject.keywordPlus | STORAGE | - |
dc.subject.keywordPlus | POINTS | - |
dc.subject.keywordPlus | SODIUM | - |
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