Ceramic Stereolithography of Li7La3Zr2O12 Micro-Embossed Sheets for Solid Electrolyte Applications

Lithium-ion batteries (LIBs) have significantly advanced portable electronics, yet their reliance on flammable organic solvents and lithium dendrite formation pose safety risks. Solid-state batteries (SSBs), utilizing solid electrolytes, offer a safer alternative with higher energy and power densiti...

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Bibliographic Details
Published in:Ceramics 2024-09, Vol.7 (3), p.1218-1226
Main Authors: Spirrett, Fiona, Oi, Ayaka, Kirihara, Soshu
Format: Article
Language:English
Subjects:
all solid battery
Alternative energy
Ceramics
Cold isostatic pressing
Cold pressing
Design
Diffusion rate
Electric vehicles
Electrodes
Electrolytes
Embossing
Energy storage
Heat
Interlayers
Ion currents
Ion exchange
Lanthanum
Laser applications
Lasers
Lithium
lithium lanthanum zirconate
Lithium-ion batteries
Lithography
Low temperature resistance
Microstructure
Molten salt electrolytes
Parameter identification
Photosensitivity
Process parameters
solid electrolyte
Solid electrolytes
Solid phases
stereolithography
Temperature
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Summary:Lithium-ion batteries (LIBs) have significantly advanced portable electronics, yet their reliance on flammable organic solvents and lithium dendrite formation pose safety risks. Solid-state batteries (SSBs), utilizing solid electrolytes, offer a safer alternative with higher energy and power densities. This study explores the fabrication of solid electrolytes using ceramic stereolithography, focusing on lithium lanthanum zirconate (LLZ) due to its high ionic conductivity and chemical stability. A photosensitive paste containing 40–43 vol% LLZ was suitable for processing by stereolithography, and optimized processing parameters of 100 mW laser power and 1000 mm/s laser scanning speed with a 50 μm laser spot size were identified for sufficient material curing and interlayer lamination of LLZ. Thin embossed sheets were designed to enhance ion exchange and reduce internal resistance and were fabricated by the ceramic stereolithography method. The effect of cold isostatic pressing (CIP) on the sintered microstructure was investigated, and the potential for CIP to promote solid-phase diffusion during sintering was demonstrated, particularly at 67 MPa. The resulting LLZ-embossed sheets exhibited dense ceramic microstructures. These findings support the potential application of ceramic stereolithography for fabricating efficient solid electrolytes for next-generation telecommunications and mobile devices.
ISSN:2571-6131
2571-6131
DOI:10.3390/ceramics7030080