What kind of lithium battery separator is good?

Lithium battery separator materials can be divided into: woven film, non-woven film (non-woven fabric), microporous film, composite film, diaphragm paper, laminated film, etc. Polyolefin materials have excellent mechanical properties, chemical stability and relatively inexpensive characteristics. Therefore, polyolefin microporous membranes such as polyethylene and polypropylene have been used as lithium battery separators in the early stage of lithium battery research and development. The current market-oriented lithium battery separators are mainly polyethylene and polypropylene polyolefin separators, including single-layer, single-layer PP, and three-layer PP/PE/PP composite membranes. The existing polyolefin membrane processing technology can be divided into two categories according to the dry method and the wet method, and the dry method can be subdivided into a uniaxial stretching process and a biaxial stretching process. High porosity, high thermal resistance, high melting point, high strength, and good wettability to electrolyte are the development directions of lithium battery separator materials in the future. Today, commercial lithium battery separators are still polyolefin microporous membranes. In recent years, solid and gel electrolytes have begun to be used as a special component, and at the same time play the role of electrolyte and battery separator, which is an emerging technical means. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the differences between the lithium battery separator PP film and the PE film?