My country's new energy vehicle industry has been forging ahead under the dual benefits of policies and markets in recent years. Powerful lithium batteries as their core components have also received increasing market attention. As one of the three core components of electric vehicles, batteries are responsible for the cruising range of electric cars. Lithium iron phosphate and ternary lithium-ion batteries are the mainstream choices of power lithium batteries in my country. However, with the advancement of research and development technology, ternary lithium-ion batteries have exploded with more significant potential.

It is reported that related to the energy density of lithium iron phosphate batteries. Ternary lithium-ion batteries have higher energy density and higher voltage, so the battery pack of the same weight has a larger battery capacity, and the car can run farther. In addition, the higher energy density frees up more body space, which is a plus for home users.

At present, many ternary lithium-ion battery production lines launched in China are closely related to the subsidy policy. According to the circulating new energy passenger vehicle subsidy adjustment method, in 2018, the energy density of the battery system must reach 140Wh/kg to enjoy 1.1 times the subsidy, and the energy density of the ternary lithium-ion battery can reach about 200Wh/kg. As a global leader in automotive lithium-ion batteries, CATL plans to develop ternary lithium-ion batteries with an energy density of 300-350Wh/kg by 2020. The cruising range will have a qualitative leap. On the contrary, lithium iron phosphate batteries have entered a bottleneck in the research and development of energy density, which has directly led to some car companies' abandonment of lithium iron phosphate batteries.