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Li-Ion Conductive Li1.3Al0.3Ti1.7(PO4)3 (LATP) Solid Electrolyte Prepared by Cold Sintering Process with Various Sintering Additives.

ABSTRACT: The density, microstructure, and ionic conductivity of solid electrolyte Li1.3Al0.3Ti1.7(PO4)3 (LATP) ceramics prepared by cold sintering using liquid and solid sintering additives are studied. The effects of both liquid (water and water solutions of acetic acid and lithium hydroxide) and solid (lithium acetate) additives on densification are investigated. The properties of cold-sintered LATP are compared to those of conventionally sintered LATP. The materials cold-sintered at temperatures 140-280 °C and pressures 510-600 MPa show relative density in the range of 90-98% of LATP's theoretical value, comparable or higher than the density of conventionally sintered ceramics. With the relative density of 94%, a total ionic conductivity of 1.26 × 10-5 S/cm (room temperature) is achieved by cold sintering at the temperature of 200 °C and uniaxial pressure of 510 MPa using water as additive. The lower ionic conductivities of the cold-sintered ceramics compared to those prepared by conventional sintering are attributed to the formation of amorphous secondary phases in the intergranular regions depending on the type of additives used and on the processing conditions selected.

SUBMITTER: Vinnichenko M 

PROVIDER: S-EPMC9503772 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature

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Li-Ion Conductive Li<sub>1.3</sub>Al<sub>0.3</sub>Ti<sub>1.7</sub>(PO<sub>4</sub>)<sub>3</sub> (LATP) Solid Electrolyte Prepared by Cold Sintering Process with Various Sintering Additives.

Vinnichenko Mykola M   Waetzig Katja K   Aurich Alf A   Baumgaertner Christoph C   Herrmann Mathias M   Ho Chang Won CW   Kusnezoff Mihails M   Lee Chang Woo CW  

Nanomaterials (Basel, Switzerland) 20220913 18

The density, microstructure, and ionic conductivity of solid electrolyte Li<sub>1.3</sub>Al<sub>0.3</sub>Ti<sub>1.7</sub>(PO<sub>4</sub>)<sub>3</sub> (LATP) ceramics prepared by cold sintering using liquid and solid sintering additives are studied. The effects of both liquid (water and water solutions of acetic acid and lithium hydroxide) and solid (lithium acetate) additives on densification are investigated. The properties of cold-sintered LATP are compared to those of conventionally sintered  ...[more]

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