China News Service, Shenzhen, May 24 (Zheng Xiaohong and Zhu Zuying) The reporter learned from the Shenzhen Institute of Advanced Technology of the Chinese Academy of Sciences on the 24th that a new lithium-ion battery technology developed by the research team of Tang Yongbing from the Institute of Carbon Neutralization (in preparation) of the academy, Complete mass production.

The minimum working temperature of the battery can reach minus 70 ℃, the maximum working temperature can reach 80 ℃, and the low temperature and high temperature performance can be taken into account at the same time.

  According to the relevant person in charge of the Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, the research team of Tang Yongbing has developed a new lithium-ion battery technology for nearly ten years, which is the first domestic battery product with a wide temperature range, low cost and long life.

The picture shows the partial and batch testing of the new battery large-scale production line.

Photo courtesy of Shenzhen Advanced Institute of Chinese Academy of Sciences

  Where is the new battery "new"?

The team mainly worked hard on the negative electrode material and electrolyte, and developed a new type of aluminum-based composite negative electrode material. By matching with the positive electrode material of commercial lithium-ion batteries, a new type of lithium manganate, lithium iron phosphate and lithium manganate were developed for different application scenarios. Batteries and other products.

  Relevant researchers of the team said that the new aluminum-based composite anode material developed this time can effectively alleviate the generation of lithium dendrites and improve safety under low temperature and overcharge conditions.

In terms of battery life, the energy density of the battery is 13% to 25% higher than that of traditional lithium-ion batteries, which can achieve long battery life and can be fully charged in 20 minutes.

  At the same time, in terms of cost, based on the performance advantages of the aluminum-based composite negative electrode, combined with the developed high-performance electrolyte, low-temperature battery products can get rid of the dependence on expensive nano-scale positive electrode materials, and the battery cost can be reduced by 10% to 30%.

  In addition, the related research results have published more than 90 SCI papers in international journals such as Nature Chemistry, Nature Communications, Advanced Materials, etc.; more than 180 patent pools have been formed, including PCT international patents, Chinese invention patents, US, European, Japanese and Korean patents, Obtained more than 120 authorized patents.

  Arumugam Manthiram, an international expert in energy storage materials and electrochemistry and a professor at the University of Texas at Austin, pointed out in his review paper that this achievement is the first to propose the concept of a bifunctional aluminum-based anode, matching commercial cathodes such as lithium cobalt oxide, phosphoric acid Lithium iron, ternary materials, etc., the battery exhibits excellent long-cycle stability, which makes aluminum-based batteries have great application potential.