Celgard, a subsidiary of Polypore International, allied with Æsir Technology, a manufacturing company that specializes in developing next-generation Nickel-Zinc battery technology. Together, Celgard and Æsir said they will collaborate on joint research projects to further develop high-technology next-generation Nickel-Zinc (Ni-Zn), Zinc-Air (Zn-Air), Lithium-Zinc (Li-Zn) and Sodium-Zinc (Na-Zn) batteries used primarily in aviation, data centers, telecom, energy infrastructure and electric vehicle (EV) charging applications.