公开(公告)号：WO2022031302A1

公开(公告)日：2022-02-10

申请号：PCT/US2020/052052

申请日：2020-09-22

Applicant: DUPONT SAFETY & CONSTRUCTION, INC.

Inventor： AFSHARI, Mehdi ,  KANG, Byoung Kang ,  FRANCE, Brian R.

IPC: D21H13/26 ,  D21H15/10 ,  D21H17/34 ,  F16D69/02

Abstract: A paper suitable for use as a separator or thermal or fire insulation for use in or with electrochemical cells, and an electrochemical cell comprising the same, the paper having 90 to 99 weight percent aramid fibrous pulp comprising aramid polymer fibrils and 1 to 10 weight percent polyvinylpyrrolidone present as a coating on the surface of the fibers, the paper having a thickness of 10 to 40 micrometers and a tensile strength of at least 15 megapascals or greater.