A breakthrough in energy density technology for lithium iron phosphate batteries

by:CTECHi     2021-07-26

Surprise! Lithium iron phosphate battery energy density technology has achieved a breakthrough. The poor energy density of lithium iron phosphate batteries is a shortcoming that the public knows. Now the capacity density of lithium iron phosphate batteries is generally around 150Wh/kg. Even if it is done better, it is still around 160Wh/kg. Compared with the 200Wh/kg energy density of the ternary battery, there is a big gap. Lithium iron phosphate battery energy density technology has achieved breakthroughs. Now our domestic companies have begun to develop energy density on the three gradients of 180Wh/kg, 200Wh/kg and 220Wh/kg, and they have obtained very good pictures. Now 180Wh/kg has started two games. Once it reaches a higher gradient, it means that lithium iron phosphate batteries have the opportunity to enter the field of passenger cars and use them in passenger cars! Lithium iron phosphate batteries are applied through nanotechnology and lithium-rich technology, and their actual energy density will be greatly improved, and there is no problem in achieving a cost of lithium iron phosphate batteries below 2 yuan/watt hour. Anchi Technology's lithium iron phosphate battery has an energy density of 175Wh/kg. Anchi Technology was established in May 2016 with a registered capital of 499 million yuan. It is an innovative new energy technology company integrating Ru0026D, production and sales of power batteries. Anchi Technology has mass-produced 61.5Ah batteries with an energy density of 175Wh/kg, and the second-generation standard power battery system has an energy density of>140Wh/kg, which is at the leading level in China and can be applied to passenger cars, special vehicles and logistics Various models of cars, buses, etc.; research and development of 185wh/kg power high-energy density power battery products are expected to be put into mass production next year. The current production line can achieve a daily output of 12,000 cells, which has reached the 200 million Ah capacity requirement of the first phase planning, and the production line utilization rate has reached more than 90%. Through continuous technological innovation, the energy density of the lithium iron phosphate battery produced by the company can reach 175Wh/kg, and the system energy density can reach more than 140Wh/kg, and mass production has been achieved. Guoxuan Hi-Tech's lithium iron phosphate battery cell energy density has reached 180wh/kg Guoxuan Hi-Tech said on the interactive platform that the company’s 32131 lithium iron phosphate battery cell energy density has reached 180wh/kg, and the company plans to increase it to 200wh/kg in the next two years. the above. In terms of other batteries, Guoxuan Hi-Tech once stated in the “2019 Exploring the Future Pattern of Power Batteries” conducted by the Power Battery Application Branch of the China Chemical and Physical Power Supply Industry Association and Battery China.com that the company has undertaken the 300wh/kg high The energy density major science and technology project is progressing smoothly, and the energy density of the soft-pack battery cell independently developed by the company has reached 302Wh/kg. The company will continue to focus on this major science and technology project, and plans to promote the industrialization of related products this year. It is reported that Guoxuan Hi-Tech’s '190Wh/kg lithium iron phosphate battery Ru0026D and industrialization' project team has made breakthroughs in the energy density of lithium iron phosphate batteries through continuous optimization of the battery chemical system, continuous innovation in battery structure design, and continuous upgrade of battery safety protection. 190Wh/kg, pushing the development of lithium iron phosphate battery to a new height, making Guoxuan High-tech lithium iron phosphate battery a benchmark in the industry. There is a lot of room for the energy density of lithium iron phosphate batteries. At present, from the perspective of positive and negative electrodes, domestic and foreign manufacturers mainly use lithium iron phosphate cathode material systems. The power battery market in Europe and the United States basically uses lithium iron phosphate. Some, but Japan and South Korea mainly adopt the ternary system. It can be said that the current power battery of the lithium iron phosphate system is still the most mature and safest lithium-ion power battery. Although, lithium iron phosphate is almost the lowest energy density in the phosphate system. However, if the core material content of the entire positive electrode can be increased to more than 30% in the positive electrode system, then its actual energy density will be greatly improved. For example, the lithium-rich system, which is made into a battery, can achieve a single cell energy density of more than 300Wh/kg, even exceeding the energy density currently achieved by the ternary system. While increasing the specific energy of the cathode material, increasing the specific energy of the anode material is also a major technological breakthrough direction. In the current lithium iron phosphate battery, if 370 graphite is still used as the anode material, it is indeed difficult to achieve high specific energy. Therefore, the industry now values u200bu200bsilicon-based, including selenium-based high specific energy materials. Therefore, under the current system, if the lithium iron phosphate battery can be fully completed, the energy density can reach about 120Wh/kg, which is no problem for the application of electric vehicles.

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