公开(公告)号：US12272827B2

公开(公告)日：2025-04-08

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 ,  H01M8/10

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：US11837735B2

公开(公告)日：2023-12-05

申请号：US17286892

申请日：2019-12-16

Applicant: KOLON INDUSTRIES, INC.

Inventor： Jung Ho Kim

IPC: H01M4/92 ,  H01M4/86 ,  H01M4/88 ,  H01M4/90 ,  B01J23/42 ,  B01J23/40 ,  H01M8/1004

CPC classification number: H01M4/926 ,  B01J23/40 ,  B01J23/42 ,  H01M4/8652 ,  H01M4/8657 ,  H01M4/8842 ,  H01M4/8882 ,  H01M4/9083 ,  H01M8/1004

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.

公开(公告)号：US11563218B2

公开(公告)日：2023-01-24

申请号：US17048238

申请日：2019-06-17

Applicant: KOLON INDUSTRIES, INC.

Inventor： Jung Ho Kim

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

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：US11444288B2

公开(公告)日：2022-09-13

申请号：US16323400

申请日：2018-06-19

Applicant: KOLON INDUSTRIES, INC.

Inventor： Jung Ho Kim

IPC: H01M4/90 ,  H01M4/88 ,  H01M4/92 ,  H01M4/86 ,  H01M8/10 ,  H01M8/1004

Abstract: The present invention relates to an electrode comprising organic functional metal oxides, a manufacturing method thereof, a membrane-electrode assembly including the same, and a fuel cell including the membrane-electrode assembly, and the electrode comprises a support, catalyst particles supported on the support, organic functional metal oxide nanoparticles supported on the support, and an ionomer positioned on the surface of the support.
The electrode improves catalyst performance and durability in a high voltage range, can reduce the amount of a catalyst used and catalyst costs by enabling excellent current density and power density to be obtained even in a state that a relatively small amount of the catalyst is used through an increase in catalyst utilization and uniform dispersion of the catalyst, and improves performance in general and low humidification conditions.

公开(公告)号：US11283093B2

公开(公告)日：2022-03-22

申请号：US16343522

申请日：2017-12-22

Applicant: KOLON INDUSTRIES, INC.

Inventor： Jung Ho Kim ,  Hyeong Su Kim

IPC: H01M8/1004 ,  H01M4/88 ,  C04B41/48 ,  C01B32/18 ,  C01B32/194 ,  C01B32/168 ,  C09C1/56 ,  C09C3/10 ,  H01M4/86

Abstract: Disclosed are a method for manufacturing an electrode, an electrode manufactured thereby, a membrane-electrode assembly including the electrode, and a fuel cell containing the membrane-electrode assembly. The method includes the steps of: preparing an electrode forming composition by mixing a catalyst with an ionomer; applying a low-frequency acoustic energy to the electrode forming composition to perform resonant vibratory mixing so as to coat the ionomer on the surface of the catalyst; and coating the electrode forming composition to manufacture an electrode.

公开(公告)号：US11652214B2

公开(公告)日：2023-05-16

申请号：US17625837

申请日：2021-04-05

Applicant: KOLON INDUSTRIES, INC.

Inventor： Jung Ho Kim ,  Kah-Young Song ,  Nakwon Kong ,  Jusung Lee ,  Kyoungsik Nam ,  Chanmi Park

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

CPC classification number: H01M4/8657 ,  H01M4/8652 ,  H01M4/8825 ,  H01M4/8882 ,  H01M4/92 ,  H01M8/1004 ,  H01M8/1018 ,  H01M2300/0082 ,  H01M2300/0085

Abstract: Disclosed are a mixed catalyst, a method for preparing same, a method for forming an electrode by using same, and a membrane-electrode assembly comprising same, the mixed catalyst having uniform physical features within a predetermined range, which are suitable for the manufacture of an electrode and membrane-electrode assembly having desired performance and durability. The mixed catalyst comprises: a first catalyst, which includes a first support and first catalyst metal particles distributed on the first support, and has a first BET surface area and a first total pore volume; and a second catalyst, which includes a second support and second catalyst metal particles distributed on the second support, and has a second BET surface area different from the first BET surface area and a second total pore volume different from the first total pore volume.

公开(公告)号：US10985381B2

公开(公告)日：2021-04-20

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: H01M4/02 ,  H01M4/90 ,  H01M4/86 ,  H01M4/88 ,  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：US11931724B2

公开(公告)日：2024-03-19

申请号：US17287493

申请日：2019-12-16

Applicant: KOLON INDUSTRIES, INC.

Inventor： Jung Ho Kim

IPC: B01J23/42 ,  B01J21/18 ,  B01J23/89 ,  B01J37/02 ,  B01J37/04 ,  B01J37/08 ,  B01J37/26 ,  H01M4/92 ,  H01M8/1004

CPC classification number: B01J23/42 ,  B01J21/185 ,  B01J23/8913 ,  B01J37/0215 ,  B01J37/04 ,  B01J37/08 ,  B01J37/26 ,  H01M4/926 ,  H01M8/1004

Abstract: Disclosed is 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 being highly efficient and having a long service life due to improved interfacial properties with ionomer from having fluoride (F) groups on the surface thereof. The catalyst according to the present invention comprises: a support; metal particles supported in the support; and fluoride (F) groups on the surface of the support and metal particles.

公开(公告)号：US12021283B2

公开(公告)日：2024-06-25

申请号：US17625808

申请日：2020-12-23

Applicant: KOLON INDUSTRIES, INC.

Inventor： Jung Ho Kim

IPC: H01M8/1004 ,  H01M4/86 ,  H01M4/88 ,  H01M4/92 ,  H01M8/10 ,  H01M8/1018

CPC classification number: H01M8/1004 ,  H01M4/8668 ,  H01M4/8828 ,  H01M4/926 ,  H01M8/1018 ,  H01M2008/1095 ,  H01M2300/0082 ,  H01M2300/0094

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：US11557782B2

公开(公告)日：2023-01-17

申请号：US17592595

申请日：2022-02-04

Applicant: KOLON INDUSTRIES, INC.

Inventor： Jung Ho Kim ,  Hyeong Su Kim

IPC: H01M4/86 ,  H01M4/88 ,  H01M8/1004 ,  C09C3/10 ,  C01B32/18 ,  C01B32/194 ,  C01B32/168 ,  C09C1/56 ,  C04B41/48

Abstract: Disclosed are a method for manufacturing an electrode, an electrode manufactured thereby, a membrane-electrode assembly including the electrode, and a fuel cell containing the membrane-electrode assembly. The method includes the steps of: preparing an electrode forming composition by mixing a catalyst with an ionomer; applying a low-frequency acoustic energy to the electrode forming composition to perform resonant vibratory mixing so as to coat the ionomer on the surface of the catalyst; and coating the electrode forming composition to manufacture an electrode.