The applications for high-powered lithium-ion cells are on the rise, increasing the emphasis on their safety and reliability. One of the most crucial components contributing to their safety is the cell separator, a thin, porous membrane that facilitates ion transport between the anode and cathode while preventing short circuits and overheating. The quality and design of these separators are imperative to a battery’s capacity and life cycle and are integral to its overall safety profile. In this context, partnering with experts in separator design becomes indispensable for businesses navigating the evolving landscape of lithium-ion technology. Senior Material (Europe) AB is a prominent supplier of separator films in the lithium-ion battery sector, known for its advanced technology that guarantees a secure and dependable energy flow within batteries. It has the ability to manufacture the finest separator film, with a thickness of 5 micrometers in mass production, as well as a single ultra-thin coating layer down to 0.5 micrometers. Senior Material (Europe) AB works closely with its customers to create innovative solutions, processes, and materials that push the boundaries within battery lifetime, safety, and reliability. “We are dedicated to establishing a strong local base, using our expertise and technological know-how to provide the finest separator film to an expanding network of European and global battery manufacturers rapidly and on a large scale,” says Jason Hai, CEO of Senior Material (Europe) AB. The company’s product portfolio consists of three types of separator films—dry separators, wet separators, and coated separators. For the dry-process separators, polymers are melted and unidirectionally stretched. This method is cost-effective and allows for customization options while also providing high mechanical strength. In addition, the pore structure of separators produced through this process is more uniform than those produced through the wet process. Wet-process separator films undergo stretching in two directions, yielding excellent mechanical strength and low resistance. These membranes enhance energy density, strength, and safety in lithium-ion batteries. The coated separator films, whether dry or wet processed, may incorporate one or more coated layers to enhance functionality, addressing specific customer needs for heat resistance, long-term cyclability, and safety. The technology employed in these films guarantees thermal stability and minimizes self-discharge, thus meeting various manufacturing demands and achieving the desired performance of batteries.