Lithium-ion battery is a very important energy storage technology, which is widely used in portable electronic devices and new energy vehicles. With the advent of the era of electric vehicles and smart grid, the large-scale development of lithium-ion battery is restricted by the bottleneck of lithium resource shortage. Compared with lithium, sodium has rich reserves, wide distribution, low cost, and similar physical and chemical properties to lithium. Therefore, the research of sodium ion battery has attracted extensive attention in scientific research and industry again. Compared with lithium-ion battery, sodium ion battery usually has low energy density. Although it is not suitable for the field of portable electronic equipment and electric vehicles with high demand for energy density, it is suitable for low-speed electric vehicles and communication base stations with low energy density and cost sensitivity, household energy storage and other fields.
The application range of sodium ion battery is wider than that of lithium-ion battery matches the meaning of this passage.