my country’s dual-ion battery (DIB) industry is in the research and development stage, with electric vehicles as its main application field

Dual-ion battery (DIB), also known as dual-graphite battery and dual-carbon battery, refers to a battery that adjusts the positive and negative electrodes of the battery on the basis of traditional lithium-ion batteries, using graphite as the positive electrode material and aluminum foil as the negative electrode material and negative electrode current collector. . Dual-ion batteries have the advantages of good high-voltage stability, high energy density, green environmental protection, and low production cost. They are widely used in smart grids, mobile phones, electric vehicles, digital cameras and other fields.

Dual-ion batteries use graphite as the cathode material, and expandable graphite is widely used in its production process. my country is one of the world’s major producers of expandable graphite. In 2022, my country’s output of expandable graphite will reach 101,000 tons, a year-on-year increase of 7.2%. The low prices and sufficient supply of raw materials provide favorable conditions for the development of my country’s dual-ion battery industry.

According to the “2023-2028 Dual Ion Battery (DIB) Industry Market In-depth Research and Investment Prospects Forecast Analysis Report released by the Industrial Research Center 》 shows that compared with lithium-ion batteries, the energy density of dual-ion batteries can reach 220Wh/kg, and its production cost is only half of that of traditional lithium-ion batteries. In recent years, the prosperity of my country’s electric vehicle industry has continued to increase. According to statistics from the Ministry of Public Security, the number of pure electric vehicles in my country will reach 10.45 million in 2022, accounting for 79.8% of the total number of new energy vehicles. Electric vehicles have extremely high requirements on endurance, and the endurance range of dual-ion batteries can reach 530 kilometers. Driven by application demand, my country’s dual-ion battery industry is expected to achieve large-scale development.

Japan is the first country in the world to realize the commercial development of dual-ion batteries, and Power Japan Plus is its representative company. At present, my country’s dual-ion battery industry is still in its infancy and is dominated by laboratory research. The main research units include Shenzhen Institute of Advanced Technology of the Chinese Academy of Sciences, Qingdao Institute of Energy of the Chinese Academy of Sciences, Nanjing University of Science and Technology, School of Materials of Shandong University of Science and Technology, Fudan University, Hebei University etc. With technological progress, the development space of my country’s dual-ion battery industry will be further expanded.

In recent years, my country’s enthusiasm for dual-ion battery research and development has been high, which has accelerated the development of the industry. The ionic liquid electrolyte of traditional dual-ion batteries has problems such as low concentration and high production costs, resulting in poor stability of dual-ion batteries in my country. In May 2021, the research team of Tang Yongbing of the Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, prepared a high-voltage concentrated electrolyte system by studying the matching relationship between lithium salts and different electrolyte solvents, which can significantly improve the energy density and cycle performance of dual-ion batteries.

Industry analysts said that dual-ion batteries have excellent performance and are expected to have broad application prospects in the field of electric vehicles in the future. At present, my country’s dual-ion battery industry is in the research and development stage and has not yet achieved large-scale application. With the in-depth research and technological progress of scientific research institutions, the development speed of my country’s dual-ion battery industry will further accelerate in the future.