Traditional liquid batteries have been plagued by safety, and highly stable all-solid-state battery is one of the main methods to solve this problem. Solid electrolytes have been accelerating development as a core component of all-solid-state batteries. A composite solid electrolytes (CSEs) composed of an organic polymer and an inorganic solid ceramic has been widely concerned, which can take into consideration the advantages of both and avoid disadvantages. Here, we report CSEs composed of LATP ceramic particles and PEO polymer matrix. The structure, morphology and electrochemical properties of LATP and CSEs are systematically studied. When the LATP complex is 15%, the ion conductivity reaches 1.00 × 10⁻⁴ S·cm⁻¹ at 30 °C, the lithium ion transference number is 0.37, and the electrochemical window is as high as 5.2 V. The all-solid-state lithium batteries has a reversible capacity of 136.0 mA h g⁻¹ after 100 cycles, and has excellent rate performance.

传统的液体电池一直受到安全性的困扰，高度稳定的全固态电池是解决该问题的主要方法之一。固体电解质已作为全固态电池的核心组件而加速发展。由有机聚合物和无机固体陶瓷组成的复合固体电解质（CSE）已受到广泛关注，其可以考虑两者的优点并避免缺点。在这里，我们报告由LATP陶瓷颗粒和PEO聚合物基体组成的CSE。系统地研究了LATP和CSE的结构，形态和电化学性能。当LATP配合物为15％时，离子电导率达到1.00×10 ^-4  S·cm ^-1在30°C下，锂离子转移数为0.37，电化学窗口高达5.2V。全固态锂电池100次循环后的可逆容量为136.0 mA h g ^-1，具有出色的速率性能。