Over the last decade, anti-perovskites have drawn significant attention as potential solid-electrolytes for solid-state batteries. Due to the increase in consumption of lithium, there has been a push towards next generation batteries, including sodium-ion batteries. The first representative of the material class of sulphate hydride anti-perovskites, NaSOH, was synthesized by solid-state methods as a possible electrolyte for sodium solid-state batteries. Structural characterization confirms the results reported in literature with 4/ space group Thermal measurements (DSC and TGA) reveal the stability of the material up to 633 K with H release beginning shortly after. Here were report the first electrochemical measurements of this new sulphate hydride anti-perovskite with room temperature conductivity of 4.0 × 10 S/cm. Similarly, the electronic conductivity was also measured by Direct Current (DC) experiments to understand a non-linear Arrhenius plot of the conductivity. From the EIS and DC measurements, it is suggested that the electronic and ionic conductivities of this material fall in the same range at room temperature. Upon heating, the material becomes a mainly ionic conductor, explaining the change in the activation energy values in the Arrhenius plot (0.83 eV at low T and 0.24 eV at high T). Solid-state NMR hints at defects in the structure that correspond to Na1 and Hb-c-d dynamics.

中文翻译：

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硫酸氢盐反钙钛矿固体电解质的研究

在过去的十年中，反钙钛矿作为固态电池的潜在固体电解质引起了极大的关注。由于锂消耗量的增加，人们一直在推动下一代电池，包括钠离子电池。硫酸氢盐反钙钛矿材料类别的第一个代表，NaSOH，是通过固态方法合成的，作为钠固态电池的可能电解质。结构表征证实了文献中报道的 4/ 空间群热测量（DSC 和 TGA）结果，揭示了材料在高达 633 K 的温度下的稳定性，并在不久后开始释放 H。这里报告了这种新型硫酸氢盐反钙钛矿的首次电化学测量，其室温电导率为 4.0 × 10 S/cm。同样，还通过直流 (DC) 实验测量电子电导率，以了解电导率的非线性阿伦尼乌斯图。从 EIS 和 DC 测量结果表明，该材料的电子电导率和离子电导率在室温下落在同一范围内。加热后，材料主要变成离子导体，解释了阿伦尼乌斯图中活化能值的变化（低 T 下为 0.83 eV，高 T 下为 0.24 eV）。固态核磁共振暗示了与 Na1 和 Hb-cd 动力学相对应的结构缺陷。