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DC Field | Value | Language |
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dc.citation.endPage | 6539 | - |
dc.citation.number | 18 | - |
dc.citation.startPage | 6532 | - |
dc.citation.title | CHEMISTRY OF MATERIALS | - |
dc.citation.volume | 30 | - |
dc.contributor.author | Kim, Haegyeom | - |
dc.contributor.author | Seo, Dong-Hwa | - |
dc.contributor.author | Urban, Alexander | - |
dc.contributor.author | Lee, Jinhyuk | - |
dc.contributor.author | Kwon, Deok-Hwang | - |
dc.contributor.author | Bo, Shou-Hang | - |
dc.contributor.author | Shi, Tan | - |
dc.contributor.author | Papp, Joseph K. | - |
dc.contributor.author | McCloskey, Bryan D. | - |
dc.contributor.author | Ceder, Gerbrand | - |
dc.date.accessioned | 2023-12-21T20:11:48Z | - |
dc.date.available | 2023-12-21T20:11:48Z | - |
dc.date.created | 2019-12-03 | - |
dc.date.issued | 2018-09 | - |
dc.description.abstract | K-ion batteries are promising alternative energy storage systems for large- scale applications because of the globally abundant K reserves. K-ion batteries benefit from the lower standard redox potential of K/K+ than that of Na/Na+ and even Li/Li+, which can translate into a higher working voltage. Stable KC8 can also be formed via K intercalation into a graphite anode, which contrasts with the thermodynamically unfavorable Na intercalation into graphite, making graphite a readily available anode for K-ion battery technology. However, to construct practical rocking-chair K-ion batteries, an appropriate cathode material that can accommodate reversible K release and storage is still needed. We show that stoichiometric KCrO2 with a layered O3-type structure can function as a cathode for K-ion batteries and demonstrate a practical rocking-chair K-ion battery. In situ X-ray diffraction and electrochemical titration demonstrate that KxCrO2 is stable for a wide K content, allowing for topotactic K extraction and reinsertion. We further explain why stoichiometric KCrO2 is unique in forming the layered structure unlike other stoichiometric K-transition metal oxide compounds, which form nonlayered structures; this fundamental understanding provides insight for the future design of other layered cathodes for K-ion batteries. | - |
dc.identifier.bibliographicCitation | CHEMISTRY OF MATERIALS, v.30, no.18, pp.6532 - 6539 | - |
dc.identifier.doi | 10.1021/acs.chemmater.8b03228 | - |
dc.identifier.issn | 0897-4756 | - |
dc.identifier.scopusid | 2-s2.0-85053625441 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/30517 | - |
dc.identifier.url | https://pubs.acs.org/doi/10.1021/acs.chemmater.8b03228 | - |
dc.identifier.wosid | 000445972100037 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Stoichiometric Layered Potassium Transition Metal Oxide for Rechargeable Potassium Batteries | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Materials Science | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | NONAQUEOUS LI-O-2 BATTERIES | - |
dc.subject.keywordPlus | LITHIUM-ION BATTERIES | - |
dc.subject.keywordPlus | TRANSFORMATION | - |
dc.subject.keywordPlus | INTERCALATION | - |
dc.subject.keywordPlus | CATHODE | - |
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