A New High-Energy Cathode for a Na-Ion Battery with Ultrahigh Stability

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dc.contributor.authorPark, Young-Ukko
dc.contributor.authorSeo, Dong-Hwako
dc.contributor.authorKwon, Hyung-Soonko
dc.contributor.authorKim, Byoungkookko
dc.contributor.authorKim, Jongsoonko
dc.contributor.authorKim, Haegyeomko
dc.contributor.authorKim, Inkyungko
dc.contributor.authorYoo, Han-Illko
dc.contributor.authorKang, Kisukko
dc.date.accessioned2014-09-01T08:25:34Z-
dc.date.available2014-09-01T08:25:34Z-
dc.date.created2014-02-24-
dc.date.created2014-02-24-
dc.date.issued2013-09-
dc.identifier.citationJOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.135, no.37, pp.13870 - 13878-
dc.identifier.issn0002-7863-
dc.identifier.urihttp://hdl.handle.net/10203/189496-
dc.description.abstractLarge-scale electric energy storage is a key enabler for the use of renewable energy. Recently, the room-temperature Na-ion battery has been rehighlighted as an alternative low-cost technology for this application. However, significant challenges such as energy density and long-term stability must be addressed. Herein, we introduce a novel cathode material, Na1.5VPO4.8F0.7, for Na-ion batteries. This new material provides an energy density of similar to 600 Wh kg(-1), the highest value among cathodes, originating from both the multielectron redox reaction (1.2 e(-) per formula unit) and the high potential (similar to 3.8 V vs Na+/Na) of the tailored vanadium redox couple (V3.8+/V5+). Furthermore, an outstanding cycle life (similar to 95% capacity retention for 100 cycles and similar to 84% for extended 500 cycles) could be achieved, which we attribute to the small volume change (2.9%) upon cycling, the smallest volume change among known Na intercalation cathodes. The open crystal framework with two-dimensional Na diffusional pathways leads to low activation barriers for Na diffusion, enabling excellent rate capability. We believe that this new material can bring the low-cost room-temperature Na-ion battery a step closer to a sustainable large-scale energy storage system.-
dc.languageEnglish-
dc.publisherAMER CHEMICAL SOC-
dc.subjectSODIUM RECHARGEABLE BATTERIES-
dc.subjectELECTROCHEMICAL PROPERTIES-
dc.subjectELECTRODE PERFORMANCE-
dc.subjectLITHIUM BATTERIES-
dc.subjectSTORAGE MECHANISM-
dc.subjectFLUOROPHOSPHATE-
dc.subjectPYROPHOSPHATE-
dc.subjectCONDUCTIVITY-
dc.subjectNA3V2(PO4)3-
dc.subjectDIFFRACTION-
dc.titleA New High-Energy Cathode for a Na-Ion Battery with Ultrahigh Stability-
dc.typeArticle-
dc.identifier.wosid000330163000040-
dc.identifier.scopusid2-s2.0-84884476433-
dc.type.rimsART-
dc.citation.volume135-
dc.citation.issue37-
dc.citation.beginningpage13870-
dc.citation.endingpage13878-
dc.citation.publicationnameJOURNAL OF THE AMERICAN CHEMICAL SOCIETY-
dc.identifier.doi10.1021/ja406016j-
dc.embargo.liftdate9999-12-31-
dc.embargo.terms9999-12-31-
dc.contributor.nonIdAuthorPark, Young-Uk-
dc.contributor.nonIdAuthorSeo, Dong-Hwa-
dc.contributor.nonIdAuthorKwon, Hyung-Soon-
dc.contributor.nonIdAuthorKim, Jongsoon-
dc.contributor.nonIdAuthorKim, Haegyeom-
dc.contributor.nonIdAuthorKim, Inkyung-
dc.contributor.nonIdAuthorYoo, Han-Ill-
dc.contributor.nonIdAuthorKang, Kisuk-
dc.type.journalArticleArticle-
dc.subject.keywordPlusSODIUM RECHARGEABLE BATTERIES-
dc.subject.keywordPlusELECTROCHEMICAL PROPERTIES-
dc.subject.keywordPlusELECTRODE PERFORMANCE-
dc.subject.keywordPlusLITHIUM BATTERIES-
dc.subject.keywordPlusSTORAGE MECHANISM-
dc.subject.keywordPlusFLUOROPHOSPHATE-
dc.subject.keywordPlusPYROPHOSPHATE-
dc.subject.keywordPlusCONDUCTIVITY-
dc.subject.keywordPlusNA3V2(PO4)3-
dc.subject.keywordPlusDIFFRACTION-
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