Unravelling the nature of the intrinsic complex structure of binary‐phase Na‐layered oxides

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dc.contributor.authorPaidi, AKen_AU
dc.contributor.authorPark, WBen_AU
dc.contributor.authorRamakrishnan, Pen_AU
dc.contributor.authorLee, SHen_AU
dc.contributor.authorLee, JWen_AU
dc.contributor.authorLee, KSen_AU
dc.contributor.authorAhn, Hen_AU
dc.contributor.authorLiu, Ten_AU
dc.contributor.authorGim, Jen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorPyo, Men_AU
dc.contributor.authorSohn, JIen_AU
dc.contributor.authorAmine, Ken_AU
dc.contributor.authorSohn, KSen_AU
dc.contributor.authorShin, TJen_AU
dc.contributor.authorAhn, Den_AU
dc.contributor.authorLu, Jen_AU
dc.date.accessioned2024-02-27T02:34:29Zen_AU
dc.date.available2024-02-27T02:34:29Zen_AU
dc.date.issued2022-07en_AU
dc.date.statistics2024-02-27en_AU
dc.description.abstractThe layered sodium transition metal oxide, NaTMO2 (TM = transition metal), with a binary or ternary phases has displayed outstanding electrochemical performance as a new class of strategy cathode materials for sodium‐ion batteries (SIBs). Herein, an in‐depth phase analysis of developed Na1−xTMO2 cathode materials, Na0.76Ni0.20Fe0.40Mn0.40O2 with P2‐ and O3‐type phases (NFMO‐P2/O3) is offered. Structural visualization on an atomic scale is also provided and the following findings are unveiled: i) the existence of a mixed‐phase intergrowth layer distribution and unequal distribution of P2 and O3 phases along two different crystal plane indices and ii) a complete reversible charge/discharge process for the initial two cycles that displays a simple phase transformation, which is unprecedented. Moreover, first‐principles calculations support the evidence of the formation of a binary NFMO‐P2/O3 compound, over the proposed hypothetical monophasic structures (O3, P3, O′3, and P2 phases). As a result, the synergetic effect of the simultaneous existence of P‐ and O‐type phases with their unique structures allows an extraordinary level of capacity retention in a wide range of voltage (1.5–4.5 V). It is believed that the insightful understanding of the proposed materials can introduce new perspectives for the development of high‐voltage cathode materials for SIBs. © 1999-2024 John Wiley & Sonsen_AU
dc.description.sponsorshipA.K.P. and W.B.P. contributed equally to this work. This research was mainly supported by the Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future (2021M3A7C2089778, 2021M3H4A1A02049904, 2017M3A7B4049173, 2019R1A2C1007883 and 2015M3D1A1069708). Experiments at PLS-II were supported in part by MSIP and POSTECH. T.J.S. acknowledges financial support by the 2021 research Fund (1.210035.01) of UNIST (Ulsan National Institute of Science & Technology) and through NRF funded by the MSIT (2018R1A5A 1025224). Argonne National Laboratory is operated for the U.S. Department of Energy by UChicago Argonne, LLC, under Contract DEAC02-06CH11357 and the research was funded by the U.S. Department of Energy (DOE), Vehicle Technologies Office.en_AU
dc.format.mediumPrint-Electronicen_AU
dc.identifier.citationPaidi, A. K., Park, W. B., Ramakrishnan, P., Lee, S.-H., Lee, J.-W., Lee, K.-S., Ahn, H., Liu, T., Gim, J., Avdeev, M., Pyo, M., Sohn, J. I., Amine, K., Sohn, K.-S., Shin, T. J., Ahn, D., & Lu, J. (2022). Unravelling the Nature of the Intrinsic Complex Structure of Binary-Phase Na-Layered Oxides. Advanced Materials, 34(29), 2202137. doi:10.1002/adma.202202137en_AU
dc.identifier.issn0935-9648en_AU
dc.identifier.issn1521-4095en_AU
dc.identifier.issue29en_AU
dc.identifier.journaltitleAdvanced Materialsen_AU
dc.identifier.paginatione2202137-en_AU
dc.identifier.urihttp://dx.doi.org/10.1002/adma.202202137en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15446en_AU
dc.identifier.volume34en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherWileyen_AU
dc.subjectOxidesen_AU
dc.subjectLayersen_AU
dc.subjectSodium ionsen_AU
dc.subjectElectric batteriesen_AU
dc.subjectCrystalsen_AU
dc.subjectPhase transformationsen_AU
dc.subjectAlloysen_AU
dc.subjectCathodesen_AU
dc.subjectMaterialsen_AU
dc.titleUnravelling the nature of the intrinsic complex structure of binary‐phase Na‐layered oxidesen_AU
dc.typeJournal Articleen_AU
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