公开(公告)号：US20210159510A1

公开(公告)日：2021-05-27

申请号：US17048238

申请日：2019-06-17

Applicant: KOLON INDUSTRIES, INC.

Inventor： Jung Ho KIM

IPC: H01M4/88 ,  H01M8/1004

Abstract: Disclosed are a manufacturing method of a membrane electrode assembly capable of increasing the interfacial adhesion between a polymer electrolyte membrane and a catalyst layer, improving substance delivery and performance, and enhancing hydrogen permeation resistance or oxygen permeability; a membrane electrode assembly manufactured thereby; and a fuel cell comprising the membrane electrode assembly. The manufacturing method of the present invention comprises the steps of: adding a catalyst and a first ionomer to a solvent and dispersing the same, thereby producing a dispersed mixture; adding a second ionomer to the dispersed mixture, thereby producing a coating composition; and applying the coating composition directly onto at least one side of the polymer electrolyte membrane.

公开(公告)号：US20240030460A1

公开(公告)日：2024-01-25

申请号：US18258337

申请日：2021-11-30

Applicant: KOLON INDUSTRIES, INC.

Inventor： Jung Ho KIM ,  Gyong Bum KO ,  Jun Young KIM ,  Sang ll LEE ,  Kah Young SONG ,  Dong Jun CHO ,  Nak Won KONG ,  Hyeong Su KIM ,  Kyoung Sik NAM ,  Ju Sung LEE ,  Chan Mi PARK ,  Sun Young JEONG

IPC: H01M4/86 ,  H01M8/1004 ,  H01M4/92 ,  H01M4/88

CPC classification number: H01M4/8668 ,  H01M8/1004 ,  H01M4/926 ,  H01M4/8657 ,  H01M4/88 ,  H01M2008/1095

Abstract: Provided is a membrane-electrode assembly having improved binding strength between a polymer electrolyte membrane and a catalyst layer and improved durability of the catalyst layer. An embodiment of the present invention provides a membrane-electrode assembly including a polymer electrolyte membrane and a catalyst layer disposed on at least one surface of the polymer electrolyte membrane, wherein the catalyst layer contains a first composite and a second composite; the first composite contains a first catalyst containing a support and first metal particles supported on the support, and a first ionomer coated on the surface of the first catalyst; the second composite contains a second catalyst that contains second metal particles and is not supported on a support, and a second ionomer that is not coated on the surface of the second catalyst; and the first ionomer and the second ionomer are identical with or different from each other.

公开(公告)号：US20230057062A1

公开(公告)日：2023-02-23

申请号：US17758572

申请日：2021-12-01

Applicant: KOLON INDUSTRIES, INC.

Inventor： Jung Ho KIM ,  Jun Young Kim ,  Kah-Young SONG ,  Nakwon KONG ,  Jusung LEE ,  Kyoungsik NAM ,  Chanmi PARK

IPC: H01M8/1004 ,  H01M4/88

Abstract: Disclosed are: a membrane-electrode assembly having enhanced adhesion and interfacial durability between a polymer electrolyte membrane and electrodes; and a method for manufacturing a membrane-electrode assembly, in which, in forming electrodes by directly coating a catalyst slurry on a polymer electrolyte membrane, adhesion and interfacial durability between the polymer electrolyte membrane and the electrodes can be enhanced without a separate additional step, thus improving both the durability and the productivity of the membrane-electrode assembly. The method comprises the steps of: dispersing a catalyst and an ion conductor in a dispersion medium to obtain a catalyst slurry; applying the catalyst slurry onto a polymer electrolyte membrane; and drying the catalyst slurry applied onto the polymer electrolyte membrane to form an electrode. The dispersion medium is a solvent capable of forming a plurality of grooves on a surface of the polymer electrolyte membrane, and, when the electrode is formed through the drying step, at least some of the grooves are filled with the catalyst, the ion conductor, or a mixture thereof.

公开(公告)号：US20220263108A1

公开(公告)日：2022-08-18

申请号：US17625808

申请日：2020-12-23

Applicant: KOLON INDUSTRIES, INC.

Inventor： Jung Ho KIM

IPC: H01M8/1004 ,  H01M4/88 ,  H01M4/86 ,  H01M4/92 ,  H01M8/1018

Abstract: Disclosed are an electrode for a fuel cell, a method for manufacturing same, and a membrane-electrode assembly comprising same, the electrode having high durability by preventing catalyst degradation due to the agglomeration, deposition, elution, and/or migration of metal catalyst particles. The electrode for a fuel cell of the present invention comprises: a catalyst comprising a carrier and metal catalyst particles supported on the carrier; and an ionomer layer coated on at least a portion of the catalyst, wherein the ionomer layer comprises an ionomer and a chelating agent.

公开(公告)号：US20200335799A1

公开(公告)日：2020-10-22

申请号：US16079815

申请日：2017-03-27

Applicant: KOLON INDUSTRIES, INC.

Inventor： Jung Ho KIM ,  Han Moon CHO ,  Hyeong Su KIM ,  Gyong Bum KO

IPC: H01M4/90 ,  H01M4/88 ,  H01M4/86 ,  H01M8/1018

Abstract: A nanostructured electrode for a polymer electrolyte fuel cell, a manufacturing method thereof, and a fuel cell including the nanostructured electrode are provided. The nanostructured electrode includes: a three-dimensional nanostructure including a nanoporous aerogel and an ionomer surrounding the surface of the aerogel; and a catalyst dispersed in the three-dimensional nanostructure. The electrode can obtain excellent current density and power density even with a relatively small amount of catalyst by having improved catalyst performance due to nanostructuring of an ionomer, uniform catalyst dispersion and increased catalyst utilization ratio, can also obtain a price reduction effect through a decrease in the amount of catalyst used, and is excellent in the mass transfer efficiency and low humidification performance.

公开(公告)号：US20240154131A1

公开(公告)日：2024-05-09

申请号：US18550683

申请日：2022-02-15

Applicant: KOLON INDUSTRIES, INC.

Inventor： Jung Ho KIM ,  Jun Young KIM ,  Kah Young SONG ,  Nak Won KONG ,  Ju Sung LEE ,  Kyoung Sik NAM ,  Chan Mi PARK

IPC: H01M4/86 ,  H01M4/88 ,  H01M4/92 ,  H01M8/10 ,  H01M8/1004

CPC classification number: H01M4/8652 ,  H01M4/8657 ,  H01M4/8882 ,  H01M4/8892 ,  H01M4/921 ,  H01M4/925 ,  H01M8/1004 ,  H01M2008/1095

Abstract: Provided is a catalyst layer for fuel cell having improved heat-dissipating performance and durability. The catalyst layer for fuel cell according to the present invention is a catalyst layer for fuel cell comprising a first composite and a second composite, wherein the first composite includes: a supporting material, a catalyst including metal particles supported on the supporting material, and a first ionomer coated on the surface of the catalyst; the second composite includes a heat-dissipating material and a second ionomer, the second ionomer is not coated on the surface of the catalyst, and the first ionomer and the second ionomer are identical with or different from each other.

公开(公告)号：US20230253581A1

公开(公告)日：2023-08-10

申请号：US18004681

申请日：2021-11-18

Applicant: KOLON INDUSTRIES, INC.

Inventor： Ju Sung LEE ,  Nak Won KONG ,  Jung Ho KIM ,  Jun Young KIM ,  Kyoung Sik NAM ,  Chan Mi PARK ,  Kah Young SONG

IPC: H01M8/0284 ,  H01M8/1004 ,  H01M8/241 ,  H01M8/0258

CPC classification number: H01M8/0284 ,  H01M8/1004 ,  H01M8/241 ,  H01M8/0258 ,  H01M2008/1095

Abstract: Disclosed are a membrane-electrode assembly and a manufacturing method therefor, in which an electrode is modularized into a degradation-susceptible portion and the remaining portion so as to be conveniently repaired by replacing the degraded module, thereby enabling the reduction of time and costs for maintenance and repair. The membrane-electrode assembly of the present invention comprises: a first electrode; a second electrode; and an electrolyte membrane between the first and second electrodes, wherein the first electrode comprises first and second electrode modules which are separable from each other.

公开(公告)号：US20220416259A1

公开(公告)日：2022-12-29

申请号：US17778938

申请日：2021-09-24

Applicant: KOLON INDUSTRIES, INC.

Inventor： Jung Ho KIM ,  Jun Young KIM ,  Kah-Young SONG ,  Nakwon KONG ,  Jusung LEE ,  Kyoungsik NAM ,  Chanmi PARK

IPC: H01M4/92 ,  H01M8/1004 ,  H01M8/1086

Abstract: Disclosed are a carbon-based carrier that is capable of increasing catalyst activity as much as that of a porous type while having excellent durability unique to that of a solid type, a catalyst comprising same, a membrane-electrode assembly comprising same, and a method for preparing same. The carbon-based carrier for a fuel cell catalyst of the present invention is a solid-type carrier, and has an outer surface area of 100-450 m2/g, a mesopore volume of 0.25-0.65 cm3/g, and a micropore volume of 0.01-0.05 cm3/g.

公开(公告)号：US20220263099A1

公开(公告)日：2022-08-18

申请号：US17625806

申请日：2020-12-23

Applicant: KOLON INDUSTRIES, INC.

Inventor： Jung Ho KIM

IPC: H01M4/92 ,  H01M4/86 ,  H01M8/1018

Abstract: Disclosed are a catalyst for a fuel cell having excellent performance and durability, a method for manufacturing same, and a membrane-electrode assembly comprising same. The catalyst for a fuel cell of the present invention comprises: a support; and PtCo alloy particles supported on the support, wherein the PtCo alloy particles comprise a transition metal-doped or transition metal-partially alloyed surface that is modified with at least one transition metal selected from the group consisting of V, Cr, Mn, Fe, Ni, Cu, W, and Mo, or a transition metal-doped or transition metal-partially alloyed internal region including the transition metal.

公开(公告)号：US20210384525A1

公开(公告)日：2021-12-09

申请号：US17286892

申请日：2019-12-16

Applicant: KOLON INDUSTRIES, INC.

Inventor： Jung Ho KIM

IPC: H01M4/92 ,  H01M4/86 ,  H01M8/1004 ,  H01M4/88

Abstract: Disclosed are a catalyst, a method for producing the catalyst, an electrode comprising the catalyst, a membrane-electrode assembly comprising the electrode, and a fuel cell comprising the membrane-electrode assembly, the catalyst having superb catalytic activity that can be obtained by means of a simple post-treatment process of the raw catalyst. The catalyst according to the present invention comprises a support, and metal particles supported therein, wherein the metal particles comprise main particles and an additional metal layer thereon, and the main particles and additional metal layer comprise the same metal elements. The metal particles have a budding structure or a rod structure by having just a particular latticed active surface of the main particles grow to form the additional metal layer, or a core-shell structure by having the entire latticed active surface of the main particles grow to form the additional metal layer.