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- Title
Structural properties of LATP ceramic pellets sintered at 900 °C and modified by a novel solution-immersion densification process.
- Authors
Ya Zhang; Chen Tian; Ke Wang; Qiang Shen
- Abstract
The high temperature sintered ceramic pellets of solid electrolyte Li1.3Al0.3Ti1.7(PO4)3 (LATP), obtained in the absence of any sintering aids, should contain a large amount of interparticle gaps, which is one of the main bottlenecks in developing LATP-based all-solid-state Li-metal batteries. In this study, a facile solution (LiCl in ethanol) immersion method is adopted to soak the already 900-sintered LATP ceramic pellets, and the resulting series of LATP-xLiCl (x denotes the weight fraction of LiCl, 0.0 = x = 3.7) are assayed to address the high-performance mechanism of lithium-graphite (Li-C) symmetric cells. At the optimal x value of 2.3, the grainboundary resistance of the ceramic pellet can be significantly reduced from 1772 to 28 O·cm2 at room temperature, which endows the Li-C symmetrical cells of LATP-2.3LiCl with a high critical current density of 3.00 mA cm2 at 60. Especially, the enhanced ionic conductivity of LATP-2.3LiCl (4.7×10 4 S cm 1, at 20; 1.1×10 3 S cm 1, at 60) indicates an effective strategy of utilizing capillary force to densify LATP-based ceramic pellets for potential application purposes.
- Subjects
SINTERING; CERAMIC materials; SOLID electrolytes; LITHIUM cells; GRAPHITE
- Publication
International Journal of Electrochemical Science, 2024, Vol 19, Issue 9, p1
- ISSN
1452-3981
- Publication type
Article
- DOI
10.1016/j.ijoes.2024.100716