High ionic conductivity and dendrite-resistant NASICON solid electrolyte for all-solid-state sodium batteries

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dc.contributor.authorShen, Len_AU
dc.contributor.authorYang, Jen_AU
dc.contributor.authorLiu, Gen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorYao, Xen_AU
dc.date.accessioned2021-09-13T23:47:28Zen_AU
dc.date.available2021-09-13T23:47:28Zen_AU
dc.date.issued2021-06-01en_AU
dc.date.statistics2021-09-07en_AU
dc.description.abstractThe low ionic conductivity and poor dendrites suppression capability of Na3Zr2Si2PO12 solid electrolyte limit the practical application of all-solid-state sodium batteries. Herein, the optimized Na3.4Mg0.1Zr1.9Si2.2P0.8O12 electrolyte is obtained by simultaneously substituting the Zr4+ with Mg2+ and P5+ with Si4+ through solid-state reaction. The Na3.4Mg0.1Zr1.9Si2.2P0.8O12 electrolyte has superior room temperature ionic conductivity of 3.6 × 10−3 S cm−1, which is 17 times higher than that of pristine Na3Zr2Si2PO12. No short circuit of the Na/Na3.4Mg0.1Zr1.9Si2.2P0.8O12/Na symmetric battery is observed up to 2.0 mA cm−2, and the symmetric battery displays stable sodium plating/stripping cycles for over 2000 h at 0.1 mA cm−2 and 300 h at 1.0 mA cm−2. The resultant Na3.4Mg0.1Zr1.9Si2.2P0.8O12 electrolyte is further employed in two all-solid-state sodium batteries. The Na3V2(PO4)3/Na3.4Mg0.1Zr1.9Si2.2P0.8O12/Na all-solid-state sodium battery maintains a discharge capacity of 93.3 mAh g−1 at 0.1C after 50 cycles, and the FeS2/Na3.4Mg0.1Zr1.9Si2.2P0.8O12/Na all-solid-state sodium battery delivers a discharge capacity of 173.1 mAh g−1 at 0.1C after 20 cycles, which are significantly enhanced compared with those based on pristine Na3Zr2Si2PO12. This strategy provides an efficient method to prepare optimized NASICON solid electrolytes with high ionic conductivity and excellent dendrites suppression capability and promotes the practical application of all-solid-state sodium batteries. © 2021 Elsevier Ltd.en_AU
dc.identifier.articlenumber100691en_AU
dc.identifier.citationShen, L., Yang, J., Liu, G., Avdeev, M., & Yao, X. (2021). High ionic conductivity and dendrite-resistant NASICON solid electrolyte for all-solid-state sodium batteries. Materials Today Energy, 20, 100691. doi:10.1016/j.mtener.2021.100691en_AU
dc.identifier.issn2468-6069en_AU
dc.identifier.journaltitleMaterials Today Energyen_AU
dc.identifier.urihttps://doi.org/10.1016/j.mtener.2021.100691en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11689en_AU
dc.identifier.volume20en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectElectric batteriesen_AU
dc.subjectElectrochemistryen_AU
dc.subjectIonic conductivityen_AU
dc.subjectElectrolytesen_AU
dc.subjectDendritesen_AU
dc.subjectSodiumen_AU
dc.titleHigh ionic conductivity and dendrite-resistant NASICON solid electrolyte for all-solid-state sodium batteriesen_AU
dc.typeJournal Articleen_AU
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