All-solid-state batteries are a type of battery technology that features the use of solid electrolytes instead of traditional liquid electrolytes. Every component of this type of battery is solid, including the positive electrode, negative electrode, and solid electrolyte. The main advantages of all-solid-state batteries include: ★ High safety: Since no flammable organic solvents are used, all-solid-state batteries can maintain higher safety in high or low temperature environments, reducing the risk of fire. ★ Wide operating temperature range: The high thermal stability of solid electrolytes allows all-solid-state batteries to operate normally in a wider temperature range and adapt to extreme environmental conditions. ★ High design freedom: Since no diaphragm is required, the design of all-solid-state batteries is more flexible, and batteries with higher voltage and capacity can be manufactured. ★ Long life: The good chemical stability of solid electrolytes reduces side reactions inside the battery, thereby extending the battery life. ★ High production efficiency and no leakage: The manufacturing process of all-solid-state batteries is simplified, and no liquid injection and leakage problems are required, which improves production efficiency and product quality. Despite the many advantages of all-solid-state batteries, their commercialization still faces some challenges, such as the development of high-performance solid electrolyte materials, the improvement of manufacturing processes, and the control of battery costs.