Japan has developed a super-ion solid-state lithium-ion battery

According to a report by the American Physicists Organization Network on August 4 (Beijing time), a Japanese research team has developed a solid-state dielectric that can generate electric current like an electrolyte, and used it to create a solid-state lithium-ion battery. Reach the level of existing liquid lithium-ion batteries. The researchers said that because the solid is more compact and firmer, this highly conductive solid-state lithium-ion battery can supply power in a wider temperature range and is more resistant to physical damage and high temperatures. Related research was published in 'Nature u0026middot; Materials Science'. Lithium-ion batteries are commonly used in consumer electronics and electric vehicles due to their advantages of high energy efficiency, good recharge performance, and low use loss. At present, high-energy-efficiency and high-density chemical batteries can only be realized with liquid dielectrics, which are relatively fragile. Multiple safety protection measures must be added to the batteries, which makes large-scale battery systems complicated and expensive. However, the actual conductivity of the existing solid dielectric is very low, only about one-tenth of that of the liquid electrolyte, and is more sensitive to temperature changes, and the working temperature is limited to the range of 50°C to 80°C. The new material called lithium super-ion conductor (Li10GeP2S12) developed by the research team still uses lithium as the ion conductor, but is coated with a layer of crystal structure. The natural lattice becomes a small hole that allows ions to pass through, and the outer layer The structure creates channels that allow ions to move. They probed this solid-state lithium-ion battery and found that its electrical conductivity reached the level of existing liquid lithium-ion batteries, and the new battery can work in a temperature range between -100°C and 100°C. The researchers pointed out that this solid-state dielectric battery is easy to form, mold, and assemble in manufacturing, the manufacturing process is simpler and cheaper, and the stability is good and non-volatile. If a large amount of processing is expected to reduce the price of consumer electronic equipment, especially in the field of electric vehicles where batteries account for nearly half of the cost. The editor-in-chief circled the research and stated that the energy efficiency of electric vehicles has surpassed that of gasoline-powered vehicles. Especially when running in cities, where cars go stop and go, and the driving speed is not high, electric cars are more suitable. However, the promotion of electric vehicles is not smooth, which is not unrelated to their rechargeable batteries. As a representative of modern high-performance batteries, lithium-ion batteries have many advantages such as fast charging and discharging and high charging efficiency. However, large-scale battery systems that can only be realized by liquid dielectrics are complicated and expensive. Fortunately, solid-state lithium-ion batteries manufactured by Japanese researchers , The manufacturing process is simple and cheap, which may become a major driver of the popularization of electric vehicles.