Overview of the development of the four key materials of lithium-ion batteries that are now more common

by:CTECHi     2021-09-12
Do you know what are the four key materials of lithium-ion batteries? Do you understand their development profile? In life, you may have been exposed to various electronic products, then you may not understand some of its components. For example, it may contain the four key materials of lithium-ion batteries, then let the editor lead everyone to learn the four key materials of lithium-ion batteries. The global lithium-ion battery market has entered a high-speed development channel. The domestic lithium-ion battery market maintains a relatively high rate of increase, and lithium-ion battery materials will continue to benefit. By 2020, the global lithium-ion battery market will exceed 200 million kilowatt-hours. It is estimated that from 2015 to 2020, the global lithium-ion battery scale will maintain a compound annual growth rate of more than 20%. According to planning estimates, during the 'Thirteenth Five-Year Plan' period, the average annual rate of increase in domestic demand for lithium-ion batteries will exceed 25%. The upstream raw materials of lithium-ion batteries are mainly composed of four parts: positive electrode material, negative electrode material, electrolyte and separator, which will continue to benefit from the rise in downstream demand for lithium-ion batteries. Current situation of cathode materials: The industry concentration will be further improved. Ternary materials are worthy of attention. At present, there are about 200 domestic positive-level material manufacturers. Compared with lithium iron phosphate, the advantages of ternary batteries are higher energy density and longer range Big. The market expects that ternary materials will become the mainstream materials for power lithium-ion batteries for a period of time in the future, but facing the test of safety assessment in a short time, promotion will require a process. Anode materials: The industry is highly concentrated, and the strong will be strong. The total market share of the world's top four companies accounted for 78%, and anode materials showed a high degree of concentration. The price of graphite anode materials has shown a continuous downward trend in recent years, and it is expected that this trend will continue in the next few years. By expanding the production scale of anode materials, leading companies in the domestic industry can strengthen the company's bargaining power in purchasing raw materials, improve the efficiency of production equipment, and enhance market competitiveness. Related listed companies: my country Baoan, Shanshan shares. Electrolyte: The domestic production capacity of lithium hexafluorophosphate is constantly shifting to my country. As the carrier that drives the flow of lithium ions, the electrolyte's specific capacity, operating temperature range, cycle efficiency and safety performance of the battery are critical. It is a high-voltage lithium-ion battery. The guarantee of high specific energy plays an important role in the operation and safety of lithium-ion batteries. The electrolyte occupies the largest proportion in the cost of the electrolyte, and it is also the link with the highest technical barrier in the electrolyte. As the carrier that drives the flow of lithium ions, the electrolyte is very important with regard to the battery's specific capacity, operating temperature range, cycle efficiency and safety performance. It is the guarantee of the high voltage and high specific energy of the lithium ion battery, and the operation of the lithium ion battery is very important. Safety plays a vital purpose. The electrolyte occupies the largest proportion in the cost of the electrolyte, and it is also the link with the highest technical barrier in the electrolyte. Current status of diaphragm materials: There is a lot of room for high-end products to replace imports. In the past few years, the high gross profit margin of lithium-ion battery separators has attracted many new entrants. Technical barriers make the domestic supply of mid-to-high-end products far below market demand, especially about 90% of high-end products are imported. The global diaphragm industry is concentrated in the United States, Japan and South Korea, and there is a lot of room for domestic development. At present, the large-scale films used in the market mainly include single-layer polyethylene film (pE film), single-layer polypropylene film (pp film) and 3-layer pp/pE/pp adhesive mask. The preparation process of these membranes is important to be dry and wet. Benefiting from the rising demand for power lithium batteries from downstream new energy vehicles, the global lithium-ion battery separator industry is developing rapidly. However, household separators are mainly concentrated in the field of low-end dry-process separator products, and the uniformity and stability of mass production batches are poor, and it is difficult to effectively apply to power lithium-ion batteries in terms of quality. At present, my country's lithium-ion battery separators are still in the stage of import substitution. . According to the current development status, among the four major material fields of lithium-ion batteries in my country, the positive electrode material, the negative electrode material and the electrolyte have gradually become self-sufficient. Only the diaphragm material is highly dependent on imports, but the development speed is also very fast. There is no shortage of core technologies for ion batteries, and the foundation for industrialization is relatively solid. With the strengthening of the company's technology research and development and the promotion of the new energy vehicle market, the quality of my country's lithium-ion batteries will be further improved and will usher in a good period of use. I believe that through reading the above content, everyone has a preliminary understanding of the four key materials of lithium-ion batteries. At the same time, I hope that everyone will make a summary during the learning process so that they can continuously improve their design level.
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