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DC Field | Value | Language |
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dc.citation.number | 29 | - |
dc.citation.startPage | 2201816 | - |
dc.citation.title | ADVANCED FUNCTIONAL MATERIALS | - |
dc.citation.volume | 32 | - |
dc.contributor.author | Kang, Jungmin | - |
dc.contributor.author | Ahn, Jinho | - |
dc.contributor.author | Park, Hyunyoung | - |
dc.contributor.author | Ko, Wonseok | - |
dc.contributor.author | Lee, Yongseok | - |
dc.contributor.author | Lee, Seokjin | - |
dc.contributor.author | Lee, Sangyeop | - |
dc.contributor.author | Jung, Sung-Kyun | - |
dc.contributor.author | Kim, Jongsoon | - |
dc.date.accessioned | 2023-12-21T14:07:03Z | - |
dc.date.available | 2023-12-21T14:07:03Z | - |
dc.date.created | 2022-05-19 | - |
dc.date.issued | 2022-07 | - |
dc.description.abstract | Grid-scale energy storage system is the need of batteries with low-cost, high-energy-density, and long cycle life. The requirement promotes the discovery of cathode materials enabling the storage of charge carrier ion within the open framework crystal structure having multi-dimensional diffusion path exhibiting small volume change. Herein, Na2TiFeF7 is reported as a promising fluoride-based cathode material for sodium-ion batteries (SIBs). Through combined studies using various experiments and first-principles calculations, it is confirmed that Na2TiFeF7 with 3D diffusion pathway delivers a specific capacity of approximate to 185 mAh g(-1) at C/20 with an average operation voltage of approximate to 3.37 V (vs Na+/Na) including the high Fe2+/3+ redox potential (approximate to 3.75 V). Even at 5C, a specific capacity of approximate to 136 mAh g(-1) is retained (approximate to 73% of its theoretical capacity) owing to the low band gap energy (approximate to 1.83 eV) and the low activation barrier energies (approximate to 477.68 meV) required for facile Na+ diffusion, indicating the excellent power-capability. Moreover, Na2TiFeF7 composed of three-dimensionally interconnected (Fe, Ti)F-6 octahedra delivers an outstanding capacity retention of approximate to 71% after 600 cycles at 1 C owing to the small structural volume change (approximate to 0.96%) during Na+ de/intercalation. These findings provide insight into the development of fluoride-based novel cathode materials for high-performance SIBs. | - |
dc.identifier.bibliographicCitation | ADVANCED FUNCTIONAL MATERIALS, v.32, no.29, pp.2201816 | - |
dc.identifier.doi | 10.1002/adfm.202201816 | - |
dc.identifier.issn | 1616-301X | - |
dc.identifier.scopusid | 2-s2.0-85129561823 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/58559 | - |
dc.identifier.url | https://onlinelibrary.wiley.com/doi/10.1002/adfm.202201816 | - |
dc.identifier.wosid | 000790145500001 | - |
dc.language | 영어 | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Highly Stable Fe2+/Ti3+-Based Fluoride Cathode Enabling Low-Cost and High-Performance Na-Ion Batteries | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter | - |
dc.relation.journalResearchArea | Chemistry; Science & Technology - Other Topics; Materials Science; Physics | - |
dc.type.docType | Article; Early Access | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | first-principle calculations | - |
dc.subject.keywordAuthor | fluoride-based cathode materials | - |
dc.subject.keywordAuthor | high operation voltages | - |
dc.subject.keywordAuthor | large energy densities | - |
dc.subject.keywordAuthor | Na-ion batteries | - |
dc.subject.keywordPlus | ELECTROCHEMICAL ENERGY-STORAGE | - |
dc.subject.keywordPlus | ELECTRONIC-STRUCTURE | - |
dc.subject.keywordPlus | CRYSTAL-STRUCTURE | - |
dc.subject.keywordPlus | NACRO2 CATHODE | - |
dc.subject.keywordPlus | INTERCALATION | - |
dc.subject.keywordPlus | NANOCOMPOSITE | - |
dc.subject.keywordPlus | SUBSTITUTION | - |
dc.subject.keywordPlus | BEHAVIOR | - |
dc.subject.keywordPlus | LIQUID | - |
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