With the popularization of electric vehicles and the application of large-scale energy storage,lithium-ion batteries will face the problem of resource shortage.As a new type of secondary chemical power source,sodium ion batteries have a lot of advantages,such as rich resources,low costing,high energy conversion efficiency,long cycle life,high safety,excellent rate performance and low maintenance costs.Sodium-ion batteries are expected to be complementary to lithium-ion batteries in the fields of large-scale electrochemical energy storage and low-speed electric vehicles.At present,the industrial layout of sodium ion batteries has been started at home and abroad,and the market conditions and technical conditions for large-scale industrialization of sodium ion batteries have been met.
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