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Open AccessArticle
Lithium Lanthanum Titanate (LLTO) Solid Electrolyte with High Ionic Conductivity and Excellent Mechanical Properties Prepared by Aerodynamic Levitation Rapid Solidification
by
Yidong Hu
Yidong Hu
Fan Yang
Fan Yang
,
Jianguo Li
Jianguo Li
Qiaodan Hu
Qiaodan Hu
1
School of Materials Science & Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai 200240, China
2
School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai 200240, China
*
Authors to whom correspondence should be addressed.
Crystals 2025, 15(8), 707; https://doi.org/10.3390/cryst15080707 (registering DOI)
Submission received: 10 July 2025
/
Revised: 29 July 2025
/
Accepted: 30 July 2025
/
Published: 31 July 2025
Abstract
Lithium lanthanum titanate (LLTO) is a promising solid electrolyte for all-solid-state lithium-ion batteries (ASSLIBs), and its total conductivity is dramatically influenced by the ceramic microstructure. Here we report a novel aerodynamic levitation rapid solidification method to prepare dense LLTO ceramics with a dendrite-like microstructure, which can be hardly obtained by conventional sintering. At optimal nominal lithium content and cooling rate, the solidified LLTO ceramic achieved a high total conductivity of 2.5 × 10−4 S·cm−1 at room temperature, along with excellent mechanical properties such as a high Young’s modulus of 240 GPa and a high hardness of 16.7 GPa. Results from this work suggest that aerodynamic levitation rapid solidification is an effective processing method to manipulate the microstructure of LLTO ceramics to minimize the GBs’ contribution to the total conductivity, which may be expanded to prepare other oxide-type lithium electrolytes.
Share and Cite
MDPI and ACS Style
Hu, Y.; Yang, F.; Li, J.; Hu, Q.
Lithium Lanthanum Titanate (LLTO) Solid Electrolyte with High Ionic Conductivity and Excellent Mechanical Properties Prepared by Aerodynamic Levitation Rapid Solidification. Crystals 2025, 15, 707.
https://doi.org/10.3390/cryst15080707
AMA Style
Hu Y, Yang F, Li J, Hu Q.
Lithium Lanthanum Titanate (LLTO) Solid Electrolyte with High Ionic Conductivity and Excellent Mechanical Properties Prepared by Aerodynamic Levitation Rapid Solidification. Crystals. 2025; 15(8):707.
https://doi.org/10.3390/cryst15080707
Chicago/Turabian Style
Hu, Yidong, Fan Yang, Jianguo Li, and Qiaodan Hu.
2025. "Lithium Lanthanum Titanate (LLTO) Solid Electrolyte with High Ionic Conductivity and Excellent Mechanical Properties Prepared by Aerodynamic Levitation Rapid Solidification" Crystals 15, no. 8: 707.
https://doi.org/10.3390/cryst15080707
APA Style
Hu, Y., Yang, F., Li, J., & Hu, Q.
(2025). Lithium Lanthanum Titanate (LLTO) Solid Electrolyte with High Ionic Conductivity and Excellent Mechanical Properties Prepared by Aerodynamic Levitation Rapid Solidification. Crystals, 15(8), 707.
https://doi.org/10.3390/cryst15080707
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