Lithium-ion battery high-end diaphragm technology is a core threshold -Lithium - Ion Battery Equipment
Lithium-ion battery high-end diaphragm technology is a core threshold. The high-end diaphragm technology for lithium-ion batteries deeply embodies the characteristics of the current diaphragm technology. It is reported that the diaphragm is currently a high value-added material with the highest technical barriers among lithium battery materials, accounting for about 15% of the cost of lithium-ion batteries. Due to its technical complexity, the impact on power lithium-ion batteries is even greater.
Lithium-ion battery high-end diaphragm technology is a core threshold
Lithium-ion battery diaphragm technology is currently a pain point in my country's power lithium battery industry. Among lithium-ion battery materials, positive and negative electrode materials and electrolytes are basically localized at present, while separators started relatively late, and domestic companies' technology maturity is not high. Although the localization rate of lithium-ion battery separators in my country has been continuously increasing in recent years, the market is dominated by low-end 3C battery separators. The localization rate of high-end separators is still very low, and there are still a large number of separators for high-end 3C batteries and power lithium batteries. Rely on imports.(Lithium - Ion Battery Equipment)
The current common problems of domestic diaphragms are low consistency, mainly showing irregular defects, substandard porosity, uneven thickness, pore distribution and pore size distribution. High-end diaphragm technology has a very high threshold. Not only does it require huge investment, but also a strong R&D and processing team, skilled technology and high-level processing lines, and it will not be able to break through in a short time.
There is still a gap between my country's lithium-ion battery basic material research and the world's first-class level, especially high-end battery separator materials still rely on imports. From an industry perspective, the United States is still leading the original innovation of lithium-ion batteries and the research and development of core materials; Japan, as a major battery material manufacturing country, has strict processing specifications and can be the first to manufacture new finished batteries; my country and South Korea are the second echelon. Follow up status. Compared with Japan and South Korea, my country's low-end lithium-ion battery products have more advantages, but there is still a big gap in some high-end products, especially the core materials and manufacturing processes that are related to battery safety.
In related fields in my country, among the four core materials of lithium-ion batteries, positive and negative electrode materials, and electrolytes have been localized, but the diaphragm is still a shortcoming. my country's domestic separators mainly supply the low-end 3C battery market, and high-end separators still rely heavily on imports. At present, the world's best lithium-ion battery separator materials are produced by two Japanese companies, Asahi Kasei and Tonen Chemical, and 90% of the domestic lithium-ion battery aluminum-plastic film market in my country is also monopolized by Japanese manufacturers such as Showa Denko.
Fortunately, domestic companies such as Zhongke Technology and Xingyuan Materials have made major breakthroughs in high-end lithium-ion battery diaphragm technology. I believe that in the near future, my country's power lithium-ion battery industry will be able to break the monopoly of foreign technology and take the initiative in its own hands.
Lithium-ion battery diaphragm domestic technology has been broken through
The new separator is a ceramic functional separator, which adopts substrate film surface solution technology and inorganic ceramic powder dispersion technology to optimize the coating effect of ceramic powder, and establishes the relationship between coating thickness, ceramic type, particle size, surface characteristics, etc. and battery performance. The dose-effect relationship, summarizing the changing law of the technical parameters of the ceramic diaphragm, the developed diaphragm has both current cut-off characteristics and high heat resistance, and the technical indicators have reached the world's advanced level. Not only for general lithium batteries, but also for the high consistency requirements of monomer polymer lithium-ion batteries. The polyethylene separator coated with aluminum oxide with a thickness of 3 microns has a thermal shrinkage rate of less than 2% at 150°C for 2 hours. , performance is superior to similar foreign products.
Lithium-ion battery high-end diaphragm technology is a core threshold
Lithium-ion battery diaphragm technology is currently a pain point in my country's power lithium battery industry. Among lithium-ion battery materials, positive and negative electrode materials and electrolytes are basically localized at present, while separators started relatively late, and domestic companies' technology maturity is not high. Although the localization rate of lithium-ion battery separators in my country has been continuously increasing in recent years, the market is dominated by low-end 3C battery separators. The localization rate of high-end separators is still very low, and there are still a large number of separators for high-end 3C batteries and power lithium batteries. Rely on imports.(Lithium - Ion Battery Equipment)
The current common problems of domestic diaphragms are low consistency, mainly showing irregular defects, substandard porosity, uneven thickness, pore distribution and pore size distribution. High-end diaphragm technology has a very high threshold. Not only does it require huge investment, but also a strong R&D and processing team, skilled technology and high-level processing lines, and it will not be able to break through in a short time.
There is still a gap between my country's lithium-ion battery basic material research and the world's first-class level, especially high-end battery separator materials still rely on imports. From an industry perspective, the United States is still leading the original innovation of lithium-ion batteries and the research and development of core materials; Japan, as a major battery material manufacturing country, has strict processing specifications and can be the first to manufacture new finished batteries; my country and South Korea are the second echelon. Follow up status. Compared with Japan and South Korea, my country's low-end lithium-ion battery products have more advantages, but there is still a big gap in some high-end products, especially the core materials and manufacturing processes that are related to battery safety.
In related fields in my country, among the four core materials of lithium-ion batteries, positive and negative electrode materials, and electrolytes have been localized, but the diaphragm is still a shortcoming. my country's domestic separators mainly supply the low-end 3C battery market, and high-end separators still rely heavily on imports. At present, the world's best lithium-ion battery separator materials are produced by two Japanese companies, Asahi Kasei and Tonen Chemical, and 90% of the domestic lithium-ion battery aluminum-plastic film market in my country is also monopolized by Japanese manufacturers such as Showa Denko.
Fortunately, domestic companies such as Zhongke Technology and Xingyuan Materials have made major breakthroughs in high-end lithium-ion battery diaphragm technology. I believe that in the near future, my country's power lithium-ion battery industry will be able to break the monopoly of foreign technology and take the initiative in its own hands.
Lithium-ion battery diaphragm domestic technology has been broken through
The new separator is a ceramic functional separator, which adopts substrate film surface solution technology and inorganic ceramic powder dispersion technology to optimize the coating effect of ceramic powder, and establishes the relationship between coating thickness, ceramic type, particle size, surface characteristics, etc. and battery performance. The dose-effect relationship, summarizing the changing law of the technical parameters of the ceramic diaphragm, the developed diaphragm has both current cut-off characteristics and high heat resistance, and the technical indicators have reached the world's advanced level. Not only for general lithium batteries, but also for the high consistency requirements of monomer polymer lithium-ion batteries. The polyethylene separator coated with aluminum oxide with a thickness of 3 microns has a thermal shrinkage rate of less than 2% at 150°C for 2 hours. , performance is superior to similar foreign products.
