Li₄B₇O₁₂Cl, Li₄B₄Al₃O₁₂Cl, and new boracite, Li₄B₄Al₃O₁₂Cl_1-xBr_x (x = 0.1, 0.2 and 1.0) were synthesized using solid-state reaction method. The crystal structures of Li₄B₇O₁₂Cl and Li₄B₄Al₃O₁₂Cl were investigated through high-intensity synchrotron X-ray diffraction (SXRD) analysis. The ionic conductivity was elucidated for the ceramics and green compacts to discuss their potential as a solid electrolyte of all-solid-state Li-ion batteries. The ionic conductivity of the bulk part was 2.0 × 10⁻⁵ S/cm for Li₄B₄Al₃O₁₂Cl_0.2Br_0.1 and Li₄B₄Al₃O₁₂Cl_0.8Br_0.2 at 294 K and the total ionic conductivity of these compounds was approximately 10⁻⁸ S/cm. Furthermore, we succeeded to prepare a high-density green compact for Li₄B₇O₁₂Cl. The total ionic conductivity of this sample was higher than that of Li₄B₇O₁₂Cl glass-ceramics at high temperatures. The conduction pathway was determined by bond valence sum mapping for Li₄B₇O₁₂Cl and Li₄B₄Al₃O₁₂Cl, which was conducted based on the refined structural data of the high-intensity SXRD data. The results showed that an additional conduction pathway is formed for Li₄B₄Al₃O₁₂Cl and its larger unit cell promotes Li⁺ migration around the halogen ion. Although the substitution of Cl⁻ with Br⁻ suppresses the migration of Li⁺ around halogen ion due to the large ionic radius of Br⁻ in Li₄B₄Al₃O₁₂Cl_1-xBr_x, appropriate substitution enhances ion migration via the additional pathway without suppressing the ion transfer around the halogen ion. Thus, Li₄B₄Al₃O₁₂Cl_0.2Br_0.1 and Li₄B₄Al₃O₁₂Cl_0.8Br_0.2 showed high ionic conductivity.

Li ₄ B ₇ O ₁₂ Cl、Li ₄ B ₄ Al ₃ O ₁₂ Cl 和新的方硼石 Li ₄ B ₄ Al ₃ O ₁₂ Cl _{1- x} Br _x ( x  = 0.1, 0.2 和 1.0) 是使用固相合成的状态反应法。_{Li 4} B ₇ O ₁₂ Cl 和 Li ₄ B ₄ Al ₃ O ₁₂的晶体结构通过高强度同步辐射 X 射线衍射 (SXRD) 分析研究了 Cl。阐明了陶瓷和生坯的离子电导率，以讨论它们作为全固态锂离子电池固体电解质的潜力。_{Li 4} B ₄ Al ₃ O ₁₂ Cl _0.2 Br _0.1和 Li ₄ B ₄ Al ₃ O ₁₂ Cl _0.8 Br _0.2在 294 K 和总离子电导率的主体部分的离子电导率为 2.0 × 10 ^-5  S/cm这些化合物中大约有 10 ^-8 米/厘米。_{此外，我们成功地制备了用于 Li 4} B ₇ O ₁₂ Cl的高密度生坯。该样品在高温下的总离子电导率高于Li ₄ B ₇ O _{12 Cl微晶玻璃。}传导路径由 Li ₄ B ₇ O ₁₂ Cl 和 Li ₄ B ₄ Al ₃ O ₁₂ Cl 的键合价和映射确定，该映射是基于高强度 SXRD 数据的精细结构数据进行的。结果表明，Li ₄ B形成了额外的传导通路。₄ Al ₃ O ₁₂ Cl 及其较大的晶胞促进了锂^离子在卤素离子周围的迁移。尽管由于 Br ^-在 Li ₄ B ₄ Al ₃ O ₁₂ Cl _{1- x} Br _x中的大离子半径，用 Br ^{- 取代 Cl -抑制}了 Li ⁺在卤素离子周围的迁移，但适当的取代通过没有抑制卤素离子周围的离子转移的额外途径。因此，Li ₄ B ₄ Al ₃ O ₁₂Cl _0.2 Br _0.1和 Li ₄ B ₄ Al ₃ O ₁₂ Cl _0.8 Br _0.2显示出高离子电导率。