Recently, researcher Tang Yongbing and his research team of the Institute of Advanced Functional Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences successfully developed a new high-performance, low-cost sodium-type dual-ion battery that is expected to replace the existing lithium-ion technology And to achieve industrialization. In recent years, the demand for lithium with the rapid development of lithium battery is widely used year by year. However, the global reserves of lithium are very limited and unevenly distributed, causing the price of raw materials to rise rapidly, seriously restricting the rapid development of China's low-cost and high-performance energy storage devices. Sodium has the same physicochemical properties as lithium and is abundant in reserves and low in cost. Combined with the combined advantages of sodium ion and dual-ion batteries, Tang Yongbing's research team has developed a new type of high-performance, low-cost tin-graphite dual-ion battery based on sodium ion electrolyte. The new battery has beyond the expected energy density and long cycle life, and significantly reduce the battery production costs. The results show that the new sodium ion double-ion battery retains 94% of the capacity after 400 cycles of charge-discharge cycles at a 2C rate and has an energy density of 144 Wh / kg, which is higher than that of the conventional lithium-ion battery.
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