A disordered rock-salt Li-excess cathode material with high capacity and substantial oxygen redox activity: Li1.25Nb0.25Mn0.5O2

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dc.contributor.authorWang, Ruiko
dc.contributor.authorLi, Xinko
dc.contributor.authorLiu, Leiko
dc.contributor.authorLee, Jinhyukko
dc.contributor.authorSeo, Dong-Hwako
dc.contributor.authorBo, Shou-Hangko
dc.contributor.authorUrban, Alexanderko
dc.contributor.authorCeder, Gerbrandko
dc.date.accessioned2023-05-03T05:00:51Z-
dc.date.available2023-05-03T05:00:51Z-
dc.date.created2023-05-03-
dc.date.created2023-05-03-
dc.date.created2023-05-03-
dc.date.issued2015-11-
dc.identifier.citationELECTROCHEMISTRY COMMUNICATIONS, v.60, pp.70 - 73-
dc.identifier.issn1388-2481-
dc.identifier.urihttp://hdl.handle.net/10203/306459-
dc.description.abstractA disordered rocksalt Li-excess cathode material, Li1.25Nb0.25Mn0.5O2, was synthesized and investigated. It shows a large initial discharge capacity of 287 mAh g(-1) in the first cycle, which is much higher than the theoretical capacity of 146 mAh g(-1) based on the Mn3+/Mn4+ redox reaction. In situ X-ray diffraction (XRD) demonstrates that the compound remains cation-disordered during the first cycle. Electron energy loss spectroscopy (EELS) suggests that Mn and O are likely to both be redox active, resulting in the large reversible capacity. Our results show that Li1.25Nb0.25Mn0.5O2 is a promising cathode material for high capacity Li-ion batteries and that reversible oxygen redox in the bulk may be a viable way forward to increase the energy density of lithium-ion batteries. Published by Elsevier B.V.-
dc.languageEnglish-
dc.publisherELSEVIER SCIENCE INC-
dc.titleA disordered rock-salt Li-excess cathode material with high capacity and substantial oxygen redox activity: Li1.25Nb0.25Mn0.5O2-
dc.typeArticle-
dc.identifier.wosid000364797700017-
dc.identifier.scopusid2-s2.0-84940568829-
dc.type.rimsART-
dc.citation.volume60-
dc.citation.beginningpage70-
dc.citation.endingpage73-
dc.citation.publicationnameELECTROCHEMISTRY COMMUNICATIONS-
dc.identifier.doi10.1016/j.elecom.2015.08.003-
dc.contributor.localauthorSeo, Dong-Hwa-
dc.contributor.nonIdAuthorWang, Rui-
dc.contributor.nonIdAuthorLi, Xin-
dc.contributor.nonIdAuthorLiu, Lei-
dc.contributor.nonIdAuthorLee, Jinhyuk-
dc.contributor.nonIdAuthorBo, Shou-Hang-
dc.contributor.nonIdAuthorUrban, Alexander-
dc.contributor.nonIdAuthorCeder, Gerbrand-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorLithium ion batteries-
dc.subject.keywordAuthorCathode-
dc.subject.keywordAuthorDisordered rocksalt-
dc.subject.keywordAuthorLi-excess-
dc.subject.keywordAuthorHigh capacity-
dc.subject.keywordPlusRECHARGEABLE LITHIUM BATTERIES-
dc.subject.keywordPlusX-RAY-ABSORPTION-
dc.subject.keywordPlusLI-O-2 BATTERIES-
dc.subject.keywordPlusION BATTERIES-
dc.subject.keywordPlusOXIDES-
dc.subject.keywordPlusELECTRODES-
dc.subject.keywordPlusLI2O2-
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