Analysis of the technical route of solid-state batteries

　　The pursuit of zero-carbon emission vehicles in advanced countries around the world has become increasingly fierce, and the demand for new energy vehicle specifications has become increasingly clear. However, the current sluggish development of lithium battery technology has restricted the cruising range and safety, making the upgrade of new energy vehicles slow. The national standard (specific energy 300Wh/kg@2020) is approaching, and the specific energy of liquid lithium batteries is limited by inherent safety issues (260Wh/kg has proven uncontrollable safety) and is unable to climb any more, let alone 350Wh/kg in 2025.

　　The pursuit of zero-carbon emission vehicles in advanced countries around the world has become increasingly fierce, and the demand for new energy vehicle specifications has become increasingly clear. However, the current sluggish development of lithium battery technology has restricted the cruising range and safety, making the upgrade of new energy vehicles slow. The national standard (specific energy 300Wh/kg@2020) is approaching, and the specific energy of liquid lithium batteries is limited by inherent safety issues (260Wh/kg has proven uncontrollable safety) and is unable to climb any more, let alone 350Wh/kg in 2025.

　　Long-term goals are hard to come by. The shocking battery fire accidents of new energy vehicles have occurred again and again recently, which has forced the various tigers of BMW, Toyota and other international car manufacturers to start. A piece of paradise "solid-state batteries" is strategically bundled.

　　However, various industry leaders have invested in solid-state batteries for about 20 years, but they are still in a state of chaos. The battery factories each believe in different electrolyte systems, and there is no trend of technology flow or integration. Some of them are successful. Some people continue to postpone the development of road maps, and those who leave the market sadly after throwing hundreds of millions of dollars are even heard. In terms of performance and mass production, there are inherent advantages and disadvantages that are irreversible at the level of modern technology. We divide electrolytes into six categories according to the manufacturing process and chemical system: oxides, sulfides, cyanides, halides, films, and polymers. Four major technical routes illustrate its current development status: