Aqueous lithium-air batteries are one of the most promising batteries for electric vehicles because of its high energy and power density. The battery system consists of a lithium anode and an aqueous solution catholyte, which are separated by a water-stable lithium-ion-conducting solid electrolyte, and an air electrode. The theoretical energy density of this system is 1,910 W h kg^–1, which is around five times higher than that of conventional lithium-ion batteries. A key component of this system is the water-stable lithium-ion-conducting solid electrolyte. In this work, we have developed a water-stable and water-impermeable solid electrolyte with a high lithium-ion conductivity of around 10^–3 S cm^–1 at room temperature by the addition of epoxy resin and LiCl into a tape-cast NASICON-type Li₁.₄Al₀.₄Ge₀.₂Ti₁.₄(PO₄)₃ film. The aqueous lithium-air battery with the solid electrolyte separator was successfully cycled at 0.5 mA cm^–2 and 25°C in an air atmosphere.

锂空气电池由于其高能量和功率密度而成为电动汽车最有前途的电池之一。该电池系统由一个锂阳极和一个水溶液阴极电解液（由一个耐水锂离子传导性固体电解质隔开）和一个空气电极组成。该系统的理论能量密度为1,910 W h kg ^–1，约为常规锂离子电池的五倍。该系统的关键组件是水稳定的传导锂离子的固体电解质。在这项工作中，我们开发了一种水稳定且不透水的固体电解质，其锂离子电导率约为10 ^–3 S cm ^–1在室温下，通过将环氧树脂和LiCl添加到流延NASICON型Li _1中。₄ Al ₀。₄ Ge ₀。₂钛₁。₄（PO ₄）₃胶卷。带有固体电解质隔膜的锂空气电池在空气中于0.5 mA cm ^–2和25°C下成功循环。