Gallium-doped Li7La3Zr2O12 garnet-type electrolytes with high lithium-ion conductivity

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dc.contributor.authorWu, JFen_AU
dc.contributor.authorChen, EYen_AU
dc.contributor.authorYu, Yen_AU
dc.contributor.authorLiu, Len_AU
dc.contributor.authorPang, WKen_AU
dc.contributor.authorPeterson, VKen_AU
dc.contributor.authorGuo, Xen_AU
dc.date.accessioned2021-08-26T22:40:29Zen_AU
dc.date.available2021-08-26T22:40:29Zen_AU
dc.date.issued2016-12-22en_AU
dc.date.statistics2021-08-26en_AU
dc.description.abstractOwing to their high conductivity, crystalline Li7–3xGaxLa3Zr2O12 garnets are promising electrolytes for all-solid-state lithium-ion batteries. Herein, the influence of Ga doping on the phase, lithium-ion distribution, and conductivity of Li7–3xGaxLa3Zr2O12 garnets is investigated, with the determined concentration and mobility of lithium ions shedding light on the origin of the high conductivity of Li7–3xGaxLa3Zr2O12. When the Ga concentration exceeds 0.20 Ga per formula unit, the garnet-type material is found to assume a cubic structure, but lower Ga concentrations result in the coexistence of cubic and tetragonal phases. Most lithium within Li7–3xGaxLa3Zr2O12 is found to reside at the octahedral 96h site, away from the central octahedral 48g site, while the remaining lithium resides at the tetrahedral 24d site. Such kind of lithium distribution leads to high lithium-ion mobility, which is the origin of the high conductivity; the highest lithium-ion conductivity of 1.46 mS/cm at 25 °C is found to be achieved for Li7–3xGaxLa3Zr2O12 at x = 0.25. Additionally, there are two lithium-ion migration pathways in the Li7–3xGaxLa3Zr2O12 garnets: 96h-96h and 24d-96h-24d, but the lithium ions transporting through the 96h-96h pathway determine the overall conductivity. © 2016 American Chemical Societyen_AU
dc.identifier.citationWu, J.-F., Chen, E.-Y., Yu, Y., Liu, L., Wu, Y., Pang, W. K., Peterson, V. K. & Guo, X. (2017). Gallium-doped Li7La3Zr2O12 garnet-type electrolytes with high lithium-ion conductivity. ACS Applied Materials & Interfaces, 9(2), 1542-1552. doi:10.1021/acsami.6b13902en_AU
dc.identifier.issn1944-8252en_AU
dc.identifier.issue2en_AU
dc.identifier.journaltitleACS Applied Materials & Interfacesen_AU
dc.identifier.pagination1542-1552en_AU
dc.identifier.urihttps://doi.org/10.1021/acsami.6b13902en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11522en_AU
dc.identifier.volume9en_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectElectric conductivityen_AU
dc.subjectElectrolytesen_AU
dc.subjectLithiumen_AU
dc.subjectElectric batteriesen_AU
dc.subjectIonsen_AU
dc.subjectGarnetsen_AU
dc.titleGallium-doped Li7La3Zr2O12 garnet-type electrolytes with high lithium-ion conductivityen_AU
dc.typeJournal Articleen_AU
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