Lithium-ion batteries exist in various forms for different applications. From mm-scale button cells for med tech applications to big battery packs in electric vehicles. In simple terms, manufacturers successively stack cathode and anode sheets, aluminum (cathode) or copper (anode) foil with active material on both sides and separate them with a polymer separator. These are brought together into a housing and the liquid electrolyte is added to produce the final battery. The water content of each component needs to be as low as possible.
Water is poisonous to lithium-ion batteries. It reacts with the liquid electrolyte inside the battery to produce aggressive degradation products that greatly reduce performance. Thorough testing for water in all functional components of a lithium-ion battery is therefore essential to ensure high quality.
Download this white paper now to learn how to prevent water from damaging your lithium-ion batteries, courtesy of Mettler Toledo.