China won the first place in solid-state batteries.

China's first solid-state battery means that China has made a leading position in the research and development of solid-state battery technology. Solid-state battery is a kind of lithium battery which uses solid electrode materials and solid electrolyte materials and does not contain any liquid. Compared with traditional liquid electrolyte batteries, it can be said that the improvement of solid-state batteries in all aspects is a qualitative leap. Due to the improvement of energy density, safety and reliability, solid-state rechargeable batteries have attracted great attention in the industry. From 183 1 to 1834, michael faraday discovered the solid electrolytes silver sulfide and lead fluoride, which laid the foundation of solid-state ionics. 1In the second half of 1950s, silver ion solid electrolyte was used in many electrochemical systems, but there were some main problems, such as high internal resistance, low energy density and low voltage. In the1990s, Oak Ridge National Laboratory developed a new type of solid electrolyte for manufacturing thin-film lithium-ion batteries. Until 2000, major automobile manufacturers and developers became more and more interested in solid-state battery technology. From 20 16 to 20 19, the growth rate of solid-state battery patents was 45%, and dozens of enterprises around the world devoted themselves to the research and development of solid-state battery technology. By 2023, potential solid electrolyte materials include polymers, sulfides and oxides. The demand for solid-state batteries mainly comes from three areas: power batteries, consumer batteries and energy storage batteries. Based on the advantages of safety and flexibility of solid-state batteries, the first possible application is in the field of micro-batteries with low cost sensitivity, such as implantable medical devices and wireless sensors. After the technology matures, it gradually penetrates into high-end consumer batteries. Solid-state battery has more room for improving energy density and higher safety, which makes it the next generation energy storage technology with broad application prospects.