Reclaimed silica from spent lead-acid battery separator was exploited by pyrolysis process to avoid further extraction of raw materials and energy-consuming methods and was mixed with ultra-high mol. At the moment, since the development of human's life, there is a strong need for vast amounts of e. To recycle silica and use it for fabricating new battery separators, waste polyethylene separators were collected from spent lead-acid batteries. Also, to fabricate new silica-PE separators, ul. To determine the constituents of the separators, TGA analysis was implemented, and the curves are presented in Fig. 3. In the spent separator, a weight loss is observed. A considerable amount of waste in the battery industry forces authorities to device a method to save both energy and materials. Therefore, recycling comes to the field to fulfil th. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.