公开(公告)号：US20230253594A1

公开(公告)日：2023-08-10

申请号：US18004469

申请日：2021-11-24

Applicant: KOLON INDUSTRIES, INC.

Inventor： Eunsu LEE ,  Donghoon LEE ,  Junghwa PARK ,  Hyesong LEE

IPC: H01M8/1062 ,  H01M8/1053 ,  H01M8/1039

CPC classification number: H01M8/1062 ,  H01M8/1053 ,  H01M8/1039 ,  H01M2008/1095

Abstract: Disclosed are a polymer electrolyte membrane and a membrane-electrode assembly comprising same, the membrane having, without a deterioration in performance such as ion conductivity, excellent mechanical properties, so as to ensure the manufacture of a membrane-electrode assembly having such high durability that the wet/dry cycle, which is measured according to accelerated durability test method of a NEDO protocol, is 30,000 times or more. The polymer electrolyte membrane of the present invention comprises: a porous support having a plurality of pores; and a composite layer including ionomers that fill the pores, wherein the ratio (IS/FS) of the stab initial strain (IS) of the polymer electrolyte membrane to the stab final strain (FS) of the polymer electrolyte membrane is 0.4 to 1.0.

公开(公告)号：US20230178782A1

公开(公告)日：2023-06-08

申请号：US17996931

申请日：2021-11-05

Applicant: KOLON INDUSTRIES, INC.

Inventor： Junghwa PARK ,  Dong-Hoon LEE ,  Nayoung KIM ,  Eunsu LEE ,  Changhoon OH ,  Hyesong LEE

IPC: H01M8/1048 ,  H01M8/1069 ,  H01M8/1086 ,  H01M8/1067 ,  H01M8/1051

CPC classification number: H01M8/1048 ,  H01M8/1083 ,  H01M8/1086 ,  H01M8/1067 ,  H01M8/1051 ,  H01M2008/1095

Abstract: Disclosed are a polymer electrolyte membrane having both high ion conductivity and excellent chemical durability, a manufacturing method therefor, and an electrochemical device comprising same. The polymer electrolyte membrane of the present invention comprises an electrolyte composition, the electrolyte composition containing: an ion conductor; and a radical scavenger, wherein the radical scavenger comprises an organic cyclic compound having at least one functional group selected from the group consisting of a hydroxyl group (—OH), an amine group (—NH2), a carboxyl group (—COOH), and an amide group (—CONH2).

公开(公告)号：US20230006231A1

公开(公告)日：2023-01-05

申请号：US17769763

申请日：2020-12-23

Applicant: KOLON INDUSTRIES, INC.

Inventor： Junghwa PATK ,  Donghoon LEE ,  Nayoung KIM ,  Eunsu LEE ,  Hyesong LEE

IPC: H01M8/1048 ,  H01M8/1062 ,  H01M8/1081

Abstract: Disclosed are a polymer electrolyte membrane having high flexibility, high ionic conductivity, and excellent mechanical durability, a method for manufacturing same, and an electrochemical device comprising same. The polymer electrolyte membrane of the present invention comprises a polymer electrolyte material, wherein the polymer electrolyte material comprises: an ion conductor having an ion-exchange group; and an organic compound which binds to the ion-exchange group via an ionic bond or a hydrogen bond, thereby allowing the polymer electrolyte material to have an ionic crosslink structure or a hydrogen bond crosslink structure.

公开(公告)号：US20220393214A1

公开(公告)日：2022-12-08

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 ,  H01M8/1004 ,  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：US20210111424A1

公开(公告)日：2021-04-15

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: H01M8/1051 ,  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.