Lithium-ionic conductors of Li_1+xAl_xGe_2-x(PO₄)₃ family are considered as one of the most attractive solid electrolytes. Li_1.5Al_0.5Ge_1.5(PO₄)₃ composition obtained by glass-ceramic route exhibits the highest electrical conductivity at room temperature. The introduction of sintering additives makes it possible to modify the properties of solid electrolytes. Glass-ceramics of the Li_1.5Al_0.5Ge_1.5(PO₄)₃–xB₂O₃ series (x = 0, 0.05, 0.1, 0.15, 0.2 wt%) was obtained by glass crystallization at optimal conditions of heat treatment. The influence of B₂O₃ additive on thermal stability and crystallization process of initial glasses was studied by DSC method. The phase composition, microstructure and transport properties of glass-ceramics were investigated by XRD, SEM and impedance spectroscopy, respectively. The structure of the glass-ceramics was characterized by Raman spectroscopy. Glass-ceramics was found to be single-phase (R-3c) when 0 ≤ x ≤ 0.15, but impurity phases Li₄P₂O₇ and AlPO₄ appear at x = 0.20. The conductivity of B₂O₃-added solid electrolytes is higher compared to the pristine Li_1.5Al_0.5Ge_1.5(PO₄)₃. Its ionic conductivity reached 5.5 × 10⁻⁴ S cm⁻¹ at 25 °C. The obtained glass-ceramic electrolytes are promising for use in all-solid-state lithium-ion batteries.

_{Li 1+x} Al _x Ge _2-x (PO ₄ ) ₃族的锂离子导体被认为是最具吸引力的固体电解质之一。通过微晶玻璃途径获得的Li _1.5 Al _0.5 Ge _1.5 (PO ₄ ) ₃组合物在室温下表现出最高的电导率。烧结添加剂的引入使得改变固体电解质的性能成为可能。_{Li 1.5} Al _0.5 Ge _1.5 (PO ₄ ) ₃ – x B ₂的微晶玻璃O ₃系列 ( x  = 0, 0.05, 0.1, 0.15, 0.2 wt%)是在最佳热处理条件下通过玻璃结晶获得的。采用DSC方法研究了B ₂ O ₃添加剂对初始玻璃热稳定性和结晶过程的影响。分别通过XRD、SEM和阻抗谱研究了微晶玻璃的相组成、微观结构和传输性能。玻璃陶瓷的结构通过拉曼光谱进行表征。当0≤x≤0.15时，微晶玻璃为单相( R -3c )   ，但杂质相为Li ₄ P ₂ O ₇和AlPO ₄出现在x  = 0.20。_{与原始的Li 1.5} Al _0.5 Ge _1.5 (PO ₄ ) ₃相比，添加B ₂ O ₃的固体电解质的电导率更高。其离子电导率在 25 °C 时达到 5.5 × 10 ^-4  S cm ^{-1 。}所获得的玻璃陶瓷电解质有望用于全固态锂离子电池。