The non-woven material has the advantages of high temperature resistance, high porosity, and the like, and because of its three-dimensional pore structure, the short circuit phenomenon caused by acupuncture can be effectively avoided, and the liquid retention rate can be improved. The above properties of the non-woven(China Polypropylene Non Woven Vendor) membrane are especially suitable for power lithium-ion batteries. In the past two years, the following companies and institutions have carried out related research and development and industrial layout.

In 2016, Dreamweaver introduced a variety of non-woven(Polypropylene Spun-Bond Non Woven Supplier) diaphragms, including Silver, Gold and Titanium. The Silver series is the thinnest of the three, with a thickness of about 20μm. The company's goal is to reduce its thickness to 15μm in 2017 and its thickness to 12μm in 2018. According to the company, the diaphragm provides outstanding safety protection and extends battery life for a variety of applications requiring energy storage, including solar cells, electric vehicles, power tools and other power batteries, as well as digital lithium batteries with higher safety requirements. product. According to the company, the company has produced 100 million square meters of this diaphragm per year on the Glatfelter production line in Germany.

In July 2017, Mitsubishi Paper announced that it has applied ceramic ions to a non-woven membrane made of polyester(Spun-Bond Non Woven Company) fiber to enhance the high temperature resistance of the battery separator, which can withstand temperatures up to 470 °C. According to the data, in 2018, the company expects to invest nearly 3 billion yen in high-sand plants, with an annual production capacity of 33 million square meters.

China Haicheng said in its 2016 annual report that the company's research and development center is mainly engaged in the research and development of lithium-ion battery separator base paper for new energy vehicles.

In the report period, the company's research and development aims to solve the technical bottleneck of coating ceramic non-woven lithium battery separator and large internal resistance, and develop PET substrate plus fine spinning thermal composite technology and fine coating technology. In the lithium manganate battery production line test technical performance indicators, improve the ceramic non-woven lithium battery separator technology, while exploring the industrialization and capitalization mode of operation, to do a good job in the market and production preparation for industrialization.