Microstructure and Conductivity of Electric Field-Assisted Pressureless Sintered Li
7La
3Zr
1.9Ta
0.1O
12 Solid Electrolytes

Muccillo, R.; Conceição, L.; Lustosa, G.M.M.M.; Franchetti, M.G.S.; Miranda, G.C.C.; Florio, D.Z. de; Muccillo, E.N.S.

doi:10.2139/ssrn.3580452

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Microstructure and Conductivity of Electric Field-Assisted Pressureless Sintered Li ₇La ₃Zr _1.9Ta _0.1O ₁₂ Solid Electrolytes

14 Pages Posted: 29 Apr 2020

See all articles by R. Muccillo

R. Muccillo

Center of Environmental Chemistry - Center of Science and Technology of Materials

L. Conceição

SENAI Institute of Innovation in Electrochemistry

G.M.M.M. Lustosa

SENAI Institute of Innovation in Electrochemistry

M.G.S. Franchetti

SENAI Institute of Innovation in Electrochemistry

G.C.C. Miranda

SENAI Institute of Innovation in Electrochemistry

D.Z. de Florio

Federal University of ABC (UFABC) - Center of Engineering, Modeling, and Social Applied Sciences (CECS)

E.N.S. Muccillo

Center of Environmental Chemistry - Center of Science and Technology of Materials

Abstract

Green compacts of Li₇La₃Zr_1.9Ta_0.1O₁₂ ceramic powders, synthesized by solid state reaction, were sintered by applying electric fields at 590 ^oC and 670 ^oC during 5 min. Thickness shrinkage, electric voltage and current were monitored simultaneously. The electrical resistivity of the sintered pellets was evaluated by the impedance spectroscopy technique. Even though Li₇La₃Zr_1.9Ta_0.1O₁₂ solid electrolytes may be sintered at temperatures and times lower than those used in conventional sintering, X-ray diffraction analyses showed non-homogeneous distribution of structural phases, with cubic phase in the bulk and tetragonal phase at the pellet surfaces.

Keywords: lithium-ion batteries, solid electrolytes, electric field-assisted (flash) sintering, impedance spectroscopy

Suggested Citation: Suggested Citation

Muccillo, R. and Conceição, L. and Lustosa, G.M.M.M. and Franchetti, M.G.S. and Miranda, G.C.C. and Florio, D.Z. de and Muccillo, E.N.S., Microstructure and Conductivity of Electric Field-Assisted Pressureless Sintered Li ₇La ₃Zr _1.9Ta _0.1O ₁₂ Solid Electrolytes. Available at SSRN: https://ssrn.com/abstract=3580452 or http://dx.doi.org/10.2139/ssrn.3580452

R. Muccillo (Contact Author)

Center of Environmental Chemistry - Center of Science and Technology of Materials ( email )

S. Paulo
Brazil

L. Conceição

SENAI Institute of Innovation in Electrochemistry

Curitiba, 80215-090
Brazil

G.M.M.M. Lustosa

SENAI Institute of Innovation in Electrochemistry

Curitiba, 80215-090
Brazil

M.G.S. Franchetti

SENAI Institute of Innovation in Electrochemistry

Curitiba, 80215-090
Brazil

G.C.C. Miranda

SENAI Institute of Innovation in Electrochemistry

Curitiba, 80215-090
Brazil

D.Z. De Florio

Federal University of ABC (UFABC) - Center of Engineering, Modeling, and Social Applied Sciences (CECS)

Avenue of the States
Block A - 7th Floor - Tower 1, room 700
Santo André
Brazil

E.N.S. Muccillo

Center of Environmental Chemistry - Center of Science and Technology of Materials

S. Paulo
Brazil

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Microstructure and Conductivity of Electric Field-Assisted Pressureless Sintered Li 7La 3Zr 1.9Ta 0.1O 12 Solid Electrolytes

Abstract

Center of Environmental Chemistry - Center of Science and Technology of Materials ( email )

SENAI Institute of Innovation in Electrochemistry

SENAI Institute of Innovation in Electrochemistry

SENAI Institute of Innovation in Electrochemistry

SENAI Institute of Innovation in Electrochemistry

Federal University of ABC (UFABC) - Center of Engineering, Modeling, and Social Applied Sciences (CECS)

Center of Environmental Chemistry - Center of Science and Technology of Materials

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Microstructure and Conductivity of Electric Field-Assisted Pressureless Sintered Li ₇La ₃Zr _1.9Ta _0.1O ₁₂ Solid Electrolytes