La2Zr2O7Nanoparticle-Mediated Synthesis of Porous Al-Doped Li7La3Zr2O12Garnet

Robert L. Sacci; Rebecca D. McAuliffe; Thomas F. Malkowski; Nathan Kidder; X. Chelsea Chen; Ashfia Huq; Melanie Kirkham; Beth L. Armstrong; Luke L. Daemen; Gabriel M. Veith

doi:10.1021/acs.inorgchem.1c01300

La₂Zr₂O₇Nanoparticle-Mediated Synthesis of Porous Al-Doped Li₇La₃Zr₂O₁₂Garnet

Robert L. Sacci, Rebecca D. McAuliffe, Thomas F. Malkowski, Nathan Kidder, X. Chelsea Chen, Ashfia Huq, Melanie Kirkham, Beth L. Armstrong, Luke L. Daemen, Gabriel M. Veith

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	10012-10021
Number of pages	10
Journal	Inorganic Chemistry
Volume	60
Issue number	13
DOIs	https://doi.org/10.1021/acs.inorgchem.1c01300
State	Published - Jul 5 2021

Funding

This article has been authored by UT-Battelle, LLC under contract no. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this article or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ). Acknowledgments This work was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Science and Engineering (MSE). This research used resources at the Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory.

Funders	Funder number
Materials Science and Engineering
U.S. Department of Energy
Office of Science
Basic Energy Sciences
Oak Ridge National Laboratory

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title = "La2Zr2O7Nanoparticle-Mediated Synthesis of Porous Al-Doped Li7La3Zr2O12Garnet",

abstract = "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.",

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doi = "10.1021/acs.inorgchem.1c01300",

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AU - Sacci, Robert L.

AU - McAuliffe, Rebecca D.

AU - Malkowski, Thomas F.

AU - Kidder, Nathan

AU - Chen, X. Chelsea

AU - Huq, Ashfia

AU - Kirkham, Melanie

AU - Armstrong, Beth L.

AU - Daemen, Luke L.

AU - Veith, Gabriel M.

PY - 2021/7/5

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AB - 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.

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ER -

La₂Zr₂O₇Nanoparticle-Mediated Synthesis of Porous Al-Doped Li₇La₃Zr₂O₁₂Garnet

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