An O3‐type oxide with low sodium content as the phase‐transition‐free anode for sodium‐ion batteries

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dc.contributor.authorZhao, Cen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorChen, Len_AU
dc.contributor.authorHu, YSen_AU
dc.date.accessioned2021-01-05T22:18:35Zen_AU
dc.date.available2021-01-05T22:18:35Zen_AU
dc.date.issued2018-06-11en_AU
dc.date.statistics2021-01-05en_AU
dc.description.abstractLayered transition metal oxides NaxMO2 (M=transition metal) with P2 or O3 structure have attracted attention in sodium‐ion batteries (NIBs). A universal law is found to distinguish structural competition between P2 and O3 types based on the ratio of interlayer distances of the alkali metal layer d(O‐Na‐O) and transition‐metal layer d(O‐M‐O). The ratio of about 1.62 can be used as an indicator. O3‐type Na0.66Mg0.34Ti0.66O2 oxide is prepared as a stable anode for NIBs, in which the low Na‐content (ca. 0.66) usually undergoes a P2‐type structure with respect to NaxMO2. This material delivers an available capacity of about 98 mAh g−1 within a voltage range of 0.4–2.0 V and exhibits a better cycling stability (ca. 94.2 % of capacity retention after 128 cycles). In situ X‐ray diffraction reveals a single‐phase reaction in the discharge–charge process, which is different from the common phase transitions reported in O3‐type electrodes, ensuring long‐term cycling stability. © 2018 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheimen_AU
dc.identifier.citationZhao, C., Avdeev, M., Chen, L., Hu, Y. S. (2018) An O3‐type oxide with low sodium content as the phase‐transition‐free anode for sodium‐ion batteries. Angewandte Chemie International Edition, 57(24), 7056-7060. doi:10.1002/anie.201801923en_AU
dc.identifier.issn1521-3773en_AU
dc.identifier.issue24en_AU
dc.identifier.journaltitleAngewandte Chemie International Editionen_AU
dc.identifier.pagination7056-7060en_AU
dc.identifier.urihttps://doi.org/10.1002/anie.201801923en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/10178en_AU
dc.identifier.volume57en_AU
dc.language.isoenen_AU
dc.publisherWileyen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectSodium ionsen_AU
dc.subjectAnodesen_AU
dc.subjectOxidesen_AU
dc.subjectTransition elementsen_AU
dc.subjectPhase transformationsen_AU
dc.titleAn O3‐type oxide with low sodium content as the phase‐transition‐free anode for sodium‐ion batteriesen_AU
dc.typeJournal Articleen_AU
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