Crystal structures and ionic conductivity of antiperovskites Li₂OHX (X = Cl, Br), which are potential solid electrolyte materials for all-solid-state Li-ion batteries, were investigated. Li₂OHCl showed a Pmc2₁ orthorhombic structure at room temperature and changed to a $Pm\overline{3}m$ cubic one between 27 and 37 °C. Li₂OHBr, on the other hand, crystallized in a $Pm\overline{3}m$ cubic structure and showed no phase transition in the measured temperature range. The cubic phases of both compounds showed dominant high Li⁺-ion conductivity, while the orthorhombic phase of Li₂OHCl exhibited reduced ionic conductivity. The Li⁺-ion order in the orthorhombic Li₂OHCl makes the crystal structure highly anisotropic and two dimensional, which disturbs the hopping of the Li⁺ ions.

研究了作为全固态锂离子电池潜在的固体电解质材料的抗钙钛矿Li ₂ OHX（X = Cl，Br）的晶体结构和离子电导率。Li ₂ OHCl在室温下显示Pmc 2 ₁正交结构，并变为$P米\overline{3}米$27至37°C之间的立方立方。另一方面，Li ₂ OHBr在$P米\overline{3}米$呈立方结构，在测得的温度范围内无相变。两种化合物的立方相均显示出较高的Li ⁺离子电导率，而Li ₂ OHCl的斜方晶相则显示出较低的离子电导率。正交晶的Li ₂ OHCl中的Li ⁺离子顺序使晶体结构具有高度的各向异性和二维性，这扰乱了Li ⁺离子的跳跃。