SOL GEL SEPARATORS FOR LITHIUM-BASED BATTERIES

摘要

The thickness of separator membranes for lithium-based batteries needs to be thinner than 20 microns to increase the energy density and the recharging and discharging speeds. Tough but very flexible 8 micron sol gel coatings as a new type of battery separator that is coated from a water-based solution will be presented. A manufacturing process based on sol gel coating on a smooth substrate and later delaminating the coating from the substrate is used to form a free standing separator membrane with a porosity of 45%.