Yangzi Petrochemical successfully produced lithium-ion battery separator resin for the first time
The diaphragm is one of the four materials of lithium-ion batteries, a key inner component. Limited by the technical level, the majority of the polyethylene raw materials currently used by the wet-membrane enterprises, which account for more than half of the domestic market share, can only rely on imports. The price of imported materials is as high as 20,000 yuan per ton, and the import volume is as high as 10,000 tons per year. Growing rapidly.
As early as 2014, the Yangzi Petrochemical Research Institute began to develop special high molecular weight polyethylene resin for lithium ion battery separators. Last year, this project was officially established in the Ministry of Science and Technology of China. On May 27 this year, Yangzi Petrochemical first trial production of this new product, the output of more than 70 tons of products after analysis and testing, performance qualified, reached the quality standards of imported products.
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