my country's 18650 rechargeable battery lithium 3.7v 3500mah technology has achieved new breakthroughs, and battery energy density will be greatly improved

　　my country's 18650 rechargeable battery lithium 3.7v 3500mah technology has made new breakthroughs, and the battery energy density will be greatly improved - the reporter learned from the scientific and technological achievements evaluation meeting held in Beijing on the 16th by the China High-Tech Industrialization Research Association that China's graphene-coated modified lithium-ion batteries are being , Anode material technology has achieved major breakthroughs. After testing, the graphene coating technology developed by a team led by Zhao Jinping, a Ph.D. from the Institute of Metal Research, Chinese Academy of Sciences and chief scientist of Beijing Shenmeng Technology Co., Ltd., can increase the specific capacity of 18650 rechargeable battery lithium 3.7v 3500mah cathode materials by 15%-25% and enable 1,000 cycles. The capacity retention rate after 1000 cycles is increased by 30%-40%; the capacity of the negative electrode material is increased by 40%-45%, and the capacity retention rate after 1000 cycles is increased by 35%-50%.

　　The reporter learned from the scientific and technological achievements evaluation meeting held in Beijing on the 16th by the China High-tech Industrialization Research Association that China's graphene-coated modified 18650 rechargeable battery lithium 3.7v 3500mah positive and negative electrode material technology has achieved a major breakthrough. After testing, the graphene coating technology developed by a team led by Zhao Jinping, a Ph.D. from the Institute of Metal Research, Chinese Academy of Sciences and chief scientist of Beijing Shenmeng Technology Co., Ltd., can increase the specific capacity of 18650 rechargeable battery lithium 3.7v 3500mah cathode materials by 15%-25% and enable 1,000 cycles. The capacity retention rate after 1000 cycles is increased by 30%-40%; the capacity of the negative electrode material is increased by 40%-45%, and the capacity retention rate after 1000 cycles is increased by 35%-50%.

　　This means that applying graphene-coated lithium-ion positive and negative electrode material technology to vehicle power batteries is expected to increase the current energy density of ternary lithium-ion batteries (about 200 Wh/kg) and reach the "Key Points for Smart Cars" "Technology Industrialization Implementation Plan" proposed a target of 300 Wh/kg for vehicle power battery energy density in 2020.

　　Dr. Zhao's team used the original two-phase interface coating method and the liquid nitrogen cold extraction method to solve the problems of graphene coating of lithium-ion positive electrode materials and negative electrode materials, respectively, and produced new lithium-ion electrode materials. Its performance has been further tested by the National Power Battery Innovation Center and Sail Co., Ltd. The related technology has applied for several national patents and has been successfully put into large-scale trial production, laying the foundation for commercial mass production.

　　Technology Zone my country's 18650 rechargeable battery lithium 3.7v 3500mah technology has achieved new breakthroughs, and battery energy density will be greatly improved. Dalian Pinjia Group launches a design solution for automotive wireless charging applications based on NXp products. Nissan showcases a new technology for the power electronics and renewable energy markets. , using secondary batteries from electric vehicles for Johan Cruijff Arena How to understand the electrochemical impedance spectroscopy of lithium-ion batteries

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