La2Zr2O7 Nanoparticle-Mediated Synthesis of Porous Al-Doped Li7La3Zr2O12 Garnet

In this work, we modified the reaction pathway to quickly (minutes) incorporate lithium and stabilize the ionic conducting garnet phase by decoupling the formation of a La–Zr–O network from the addition of lithium. To do this, we synthesized La2Zr2O7 (LZO) nanoparticles to which LiNO3 was added. Thi...

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Bibliographic Details
Published in:Inorganic chemistry 2021-07, Vol.60 (13), p.10012-10021
Main Authors: Sacci, Robert L, McAuliffe, Rebecca D, Malkowski, Thomas F, Kidder, Nathan, Chen, X. Chelsea, Huq, Ashfia, Kirkham, Melanie, Armstrong, Beth L, Daemen, Luke L, Veith, Gabriel M
Format: Article
Language:English
Subjects:
Anions
Diffraction
Electrical conductivity
INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Mixtures
Precursors
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Summary:In this work, we modified the reaction pathway to quickly (minutes) incorporate lithium and stabilize the ionic conducting garnet phase by decoupling the formation of a La–Zr–O network from the addition of lithium. To do this, we synthesized La2Zr2O7 (LZO) nanoparticles to which LiNO3 was added. This method is a departure from typical solid-state synthesis methods that require high-energy milling to promote mixing and intimate particle–particle contact and from sol–gel syntheses as a unique porous microstructure is obtained. We show that the reaction time is limited by the rate of nitrate decomposition and that this method produces a porous high-Li-ion-conducting cubic phase, within an hour, that may be used as a starting structure for a composite electrolyte.
ISSN:0020-1669
1520-510X
DOI:10.1021/acs.inorgchem.1c01300