公开(公告)号：US12166252B2

公开(公告)日：2024-12-10

申请号：US17769740

申请日：2020-12-23

Applicant: KOLON INDUSTRIES, INC.

Inventor： Eunsu Lee ,  Donghoon Lee ,  Nayoung Kim ,  Junghwa Park ,  Hyesong Lee

IPC: H01M8/1067 ,  H01M8/10 ,  H01M8/1004 ,  H01M8/1058

Abstract: Disclosed are: a polymer electrolyte membrane which can guarantee the production of a membrane-electrode assembly having excellent mechanical properties without a decrease in performance, such as in ionic conductivity, and thus having a high enough durability to achieve at least 30,000 wet/dry cycles as measured according to the NEDO protocol; a membrane-electrode assembly including the polymer electrolyte membrane; and a method for measuring the durability of the membrane-electrode assembly. The polymer electrolyte membrane according to the present invention comprises a composite layer including: a porous support having multiple pores; and ionomers filling the pores, and has an MD internal tearing strength of 150 N/mm or greater, a TD internal tearing strength of 150 N/mm or greater, a stab initial strain of 8% or less, and a stab final strain of 10% or less.

公开(公告)号：US11605829B2

公开(公告)日：2023-03-14

申请号：US16970807

申请日：2019-02-26

Applicant: Kolon Industries, Inc.

Inventor： Junghwa Park ,  Donghoon Lee ,  Nayoung Kim ,  Eunsu Lee ,  Seungjib Yum

IPC: H01M8/10 ,  H01M8/1051 ,  H01M8/1053 ,  H01M8/1058 ,  H01M8/1067 ,  H01M8/18

Abstract: The present invention relates to an ion exchange membrane and an energy storage device comprising same, wherein the ion exchange membrane comprises: a polymer membrane comprising an ion conductor; and any one ion permeation inhibiting additive selected from the group consisting of a columnar porous metal oxide, crown ether, a nitrogen-containing cyclic compound, and a mixture thereof. In the ion exchange membrane, the size of a channel through which ions permeate is limited or an additive capable of trapping ions is introduced into an ion movement path, so that the permeation of ions is prevented, leading to the improvement of voltage efficiency and the prevention of deterioration.