The US-based company Porous Power Technologies develops technology for lithium-ion battery separators. Ahlstrom has an option to acquire the remaining shares at a later stage.Ahlstrom, together with Porous Power, will be offering a new generation of separator solutions for safer batteries and capacitors in electric-drive vehicles, e-bikes, portable electronics and utility-grade storage products. Porous Power's current separator products are already being evaluated by battery manufacturers around the world. The products for electric vehicles will be commercially available in larger scale later.