Japan Develops "Super Ionic" Solid State Lithium Batteries that Can Operate at a Wide Range of Temperatures

According to a report from the American Physicist Organization Network on August 4 (Beijing time), a Japanese research team has developed a solid dielectric that can generate current like an electrolyte, and uses it to manufacture a solid-state lithium battery, which can achieve conductivity. Existing liquid lithium-ion battery level. The researchers said that because of the firmer solids, this highly conductive solid-state lithium battery can supply power over a wider temperature range and is more resistant to physical damage and high temperatures. The relevant research was published in the "Natural Materials Science".

Lithium-ion batteries are widely used in consumer electronics and electric vehicles due to their high energy efficiency, good recharging performance, and low usage loss. Currently, high-efficiency, high-density chemical batteries can only be realized by liquid dielectrics. The liquid medium is relatively fragile and requires multiple safety protection measures for the batteries, which makes the large battery systems complicated and expensive. However, the actual conductivity of the existing solid dielectrics is very low and can only reach about one-tenth of the liquid electrolyte. It is sensitive to temperature changes and the operating temperature is limited to the range of 50°C to 80°C.

The new material developed by the team, called lithium-ion superconductor (Li10GeP2S12), still uses lithium as the ion conductor, but they are coated with a layer of crystal structure, and the natural lattice becomes a small hole that allows ions to pass through. The structure creates a channel that allows ions to move. They tested the solid-state lithium battery and found that it reached the level of existing liquid-state lithium-ion batteries in terms of electrical conductivity, and the new battery can work in a temperature range between -100°C and 100°C.

The researchers pointed out that the solid-state dielectric battery is easy to be molded, molded, and assembled in manufacturing, the manufacturing process is simpler, cheaper, and the stability is good and non-volatile. If mass production is expected to lower the price of consumer electronics, especially in the field of electric vehicles where the battery accounts for nearly half the cost.

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