公开(公告)号：US12148963B2

公开(公告)日：2024-11-19

申请号：US17775268

申请日：2020-12-23

Applicant: KOLON INDUSTRIES, INC.

Inventor： Nak Won Kong ,  Kyoung Sik Nam ,  Kah Young Song ,  Jun Young Kim ,  Ju Sung Lee

IPC: H01M8/1006 ,  H01M4/88 ,  H01M8/10 ,  H01M8/1018

Abstract: Disclosed is a membrane-electrode assembly having increased active area, improved fluid management capability, and decreased gas transfer resistance due to electrodes having patterned structures on both sides. Also disclosed are a method for manufacturing same, and a fuel cell comprising same. A membrane-electrode assembly according to the present invention comprises: a first electrode; a second electrode; and a polymer electrolyte membrane between the first and second electrodes, wherein the first electrode has a first surface facing the polymer electrolyte membrane and a second surface opposite the first surface, the first surface having a first patterned structure, and the second surface having a second patterned structure.

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：US12244021B2

公开(公告)日：2025-03-04

申请号：US17614372

申请日：2020-06-26

Applicant: KOLON INDUSTRIES, INC. ,  KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jun Young Kim ,  Nak-Won Kong ,  Kah-Young Song ,  Hee-Tak Kim ,  Dong Wook Lee

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

Abstract: Disclosed are a fuel cell catalyst of which only a portion, which has relatively low catalytic activity and in which the greatest amount of platinum elution occurs and platinum oxide is easily formed, is selectively coated with a protective layer, and thus degradation due to the long-term operation of a fuel cell can be effectively prevented while also minimizing a deterioration in catalytic activity; a manufacturing method therefor; and a membrane-electrode assembly including same. The fuel cell catalyst of the present invention comprises: a nanoparticle containing platinum; and a protective layer which is selectively coated on only a portion of the surface of the nanoparticle and can suppress the oxidation of the platinum through electronic interaction with the nanoparticle.

公开(公告)号：US12027736B2

公开(公告)日：2024-07-02

申请号：US17774147

申请日：2020-12-23

Applicant: KOLON INDUSTRIES, INC.

Inventor： Nak Won Kong ,  Kyoung Sik Nam ,  Kah Young Song ,  Jun Young Kim

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

CPC classification number: H01M8/1004 ,  H01M4/926 ,  H01M2004/8684

Abstract: Disclosed is a membrane-electrode assembly which can prevent the corrosion of a carbon-based carrier caused by reducing and/or stopping the supply of hydrogen gas, as well as platinum loss caused by such corrosion, without degrading the performance of a fuel cell, and thus can improve the reverse voltage durability of the fuel cell. Also disclosed are a method for manufacturing the membrane-electrode assembly, and a fuel cell including the membrane-electrode assembly. The membrane-electrode assembly according to the present invention includes: an electrolyte membrane having a first surface and a second surface opposite the first surface; an anode on the first surface; an OER catalyst layer on the first surface; and a cathode on the second surface, wherein the OER catalyst layer includes a catalyst for an oxygen-generating reaction, and at least a portion of the OER catalyst layer is disposed on the same layer as the anode.