A highly self-textured Ga2O3-substituted Li7La3Zr2O12 (LLZO-Ga) solid electrolyte with a nominal composition of Li6.55Ga0.15La3Zr2O12 is obtained by a simple and low-cost solid-state reaction technique, requiring no seed crystals to achieve grain orientation. The as-prepared self-textured LLZO-Ga shows a strong (420) preferred orientation with a high Lotgering factor of 0.91. Coherently, a terrace-shaped microstructure consisting of many parallel layers, indicating a two-dimensional-like growth mode, is clearly observed in the self-textured sample. As a result, the highly self-textured garnet-type lithium-ion conducting solid electrolyte of LLZO-Ga exhibits an extremely high ionic conductivity, reaching a state-of-the-art level of 2.06 × 10−3 S cm−1 at room temperature (25 °C) and thus shedding light on an important strategy for improving the structure and ionic conductivity of solid electrolytes.A highly self-textured Ga2O3-substituted Li7La3Zr2O12 (LLZO-Ga) solid electrolyte with a nominal composition of Li6.55Ga0.15La3Zr2O12 is obtained by a simple and low-cost solid-state reaction technique, requiring no seed crystals to achieve grain orientation. The as-prepared self-textured LLZO-Ga shows a strong (420) preferred orientation with a high Lotgering factor of 0.91. Coherently, a terrace-shaped microstructure consisting of many parallel layers, indicating a two-dimensional-like growth mode, is clearly observed in the self-textured sample. As a result, the highly self-textured garnet-type lithium-ion conducting solid electrolyte of LLZO-Ga exhibits an extremely high ionic conductivity, reaching a state-of-the-art level of 2.06 × 10−3 S cm−1 at room temperature (25 °C) and thus shedding light on an important strategy for improving the structure and ionic conductivity of solid electrolytes.

中文翻译：

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自织构Ga3+取代Li7La3Zr2O12陶瓷的固态反应生长及其离子电导率的显着增强

一种标称成分为 Li6.55Ga0.15La3Zr2O12 的高度自织构的 Ga2O3 取代的 Li7La3Zr2O12 (LLZO-Ga) 固体电解质是通过简单且低成本的固态反应技术获得的，不需要晶种来实现晶粒取向。所制备的自织构 LLZO-Ga 显示出强 (420) 优先取向，具有 0.91 的高 Lotgering 因子。一致地，在自纹理样品中清楚地观察到由许多平行层组成的梯田状微观结构，表明二维生长模式。因此，LLZO-Ga 的高度自织构石榴石型锂离子导电固体电解质表现出极高的离子电导率，达到了最先进的水平 2。06 × 10−3 S cm−1 在室温 (25 °C) 下，从而阐明了改善固体电解质结构和离子电导率的重要策略。高度自织构的 Ga2O3 取代的 Li7La3Zr2O12 (LLZO-Ga)标称成分为 Li6.55Ga0.15La3Zr2O12 的固体电解质是通过简单且低成本的固态反应技术获得的，不需要晶种来实现晶粒取向。所制备的自织构 LLZO-Ga 显示出强 (420) 优先取向，具有 0.91 的高 Lotgering 因子。一致地，在自纹理样品中清楚地观察到由许多平行层组成的梯田状微观结构，表明二维生长模式。因此，