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　　New energy vehicles, solar energy, wind energy grid -connected frequency energy storage power stations, mobile communication base stations, electric carrier vehicles ... In the wave of development of the new energy industry, power batteries play a pivotal role. China has become the world's largest country in the world.

　　At the 2018 National Science and Technology Reward Conference, the "Key Technology of Lithium Iron Phosphate Power Battery Manufacturing and Application Process Key Technology", which was cooperated with the team of Professor Ma Zifeng, Professor Ma Zifeng of the School of Chemistry and Chemistry, Shanghai Communications University, won 2018 National Science and Technology Progress Second Wait.

　　Due to its high energy density and lightweight, lithium batteries have been successfully applied to consumer electronics such as mobile phones and laptops. With the development of emerging industries such as new energy vehicles, renewable energy and smart grids, the research and development of high -safety, long life, high capacity, and low -cost power lithium batteries has become the frontier of research.

　　The positive electrode material is the basis of battery development. The positive electrode materials of lithium battery are mainly types such as lithium manganate, lithium iron phosphate and ternary material. Among them, the lithium iron phosphate has the advantages of high safety, long cycle life and stable capacity, and can use rich and low iron, phosphorus resources, no need to cobalt, nickel and other non -ferrous metals. Battery positive material.

　　However, in order to achieve large -scale applications, lithium iron phosphate must establish a manufacturing process and equipment for ton -level production capacity. Ma Zifeng's team proposed a new reaction of lithium iron phosphate iron phosphate and prepared a new structure positive pole material. In 2004, Professor Ma Zifeng's team carried a new method of synthesizing lithium iron phosphate to cooperate with Zhejiang Hengdian East Magnetic to develop lithium iron phosphate orthopedic materials.

　　In 2007, Ma Zifeng, as the chief scientist, presided over the National 973 Plan "Research on Basic Scientific Issues for Basic Science of Electric Vehicles, Basic Science Issues of High -Disted Electricity System", injecting new vitality into the industrialization development of lithium iron phosphate batteries. In 2010, in order to expand the application of lithium iron phosphate, Ma Zifeng team cooperated with BYD to obtain major science and technology projects of the Shanghai Science and Technology Commission, and carried out the research on low -cost key technologies for lithium iron phosphate battery energy storage systems to enable the application field of lithium iron phosphate batteries. Expand from new energy vehicles to smart grid energy storage systems.

　　The research results of the Jiaotong University have important innovations in the theory, process and battery design of the material synthesis. The research results of the synthesis reactions and material nanochemistry in lithium iron phosphate material are at the international advanced level. Iron Lithium synthesis reactions are internationally first.

　　Conquest with technical problems, optimize product performance

　　To create a power battery with excellent performance, it not only needs excellent positive electrode materials, but also needs to optimize the chemical system of battery materials to find appropriate negative materials and electrolytes. In addition, the power battery manufacturing process is also very important for improving battery performance.

　　Ma Zifeng's team invented a method of coating and its application, proposed the corresponding process, optimized the technical parameters, and formed a new method for manufacturing in an ultra -high -power, long cyclic life, nano -tin iron phosphate power battery and its manufacturing method and its manufacturing method , And solve the problem of low temperature and coldness of lithium iron phosphate batteries and high magnification.

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