Lithium iron phosphate batteries have become popular, and the price of battery-grade lithium carbonate continues to rise

Ouyang Minggao, vice chairman of the China Electric Vehicle 100 Association and academician of the Chinese Academy of Sciences, said that in recent years, a series of improvements have been made through lithium supplementation, silicon addition, and solid-liquid mixed electrolytes. At present, the energy density of lithium iron phosphate batteries can exceed 200Wh/Kg. The volume grouping efficiency of battery cells to systems has increased from 40% to 60%, and the cruising range can reach 600 kilometers. In addition, technical innovations such as battery packs directly used as structural parts of the chassis (such as blade battery packs) are expected to break through in the future.

Wang Chaoyang, an academician at Pennsylvania State University, has made a major breakthrough in the research of lithium iron phosphate batteries. It only takes ten minutes to charge and can last for about 250 kilometers. The cost is only comparable to that of traditional internal combustion engines. Wang Chaoyang said that this battery reduces weight, volume and cost.

Experts pointed out that with the development of new technologies, the energy density of lithium iron phosphate batteries will gradually increase. Combined with its own cost advantage, the market penetration rate of lithium iron phosphate will continue to increase.

Wu Hui, general manager of the research department of the Ivy Economic Research Institute, told a reporter from China Securities Journal that Tesla's Model Y on sale uses LG Chemical's ternary lithium battery. If a 77 kWh lithium iron phosphate battery pack version is launched, it will be about 0.2 yuan cheaper per watt-hour than a ternary lithium battery pack, and the power battery cost of the Model Y alone can be reduced by more than 15,000 yuan. However, Wu Hui said that judging from the development trend of battery technology, improving energy density is the only way forward. In the future, there will be emerging technology routes such as solid-state batteries, lithium metal batteries, and lithium-sulfur batteries that attempt to solve the problems of high energy density and long driving range. Power batteries will ultimately compete around high energy density, high safety, and low cost.