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：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：US20240002234A1

公开(公告)日：2024-01-04

申请号：US18255378

申请日：2022-03-20

Applicant: KOLON INDUSTRIES, INC.

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

IPC: C01B32/05 ,  B01J20/20

CPC classification number: C01B32/05 ,  B01J20/20 ,  C01P2006/12 ,  C01P2006/14 ,  H01M8/1004

Abstract: Disclosed are: a method for preparing a porous carbon structure, capable of dramatically increasing the surface area and total pore volume of the porous carbon structure; and a porous carbon structure prepared using same. The method of the present invention comprises the steps of: preparing a template having a mesoporous shell; injecting a carbon precursor into the template, the carbon precursor comprising a polymer precursor and a cross-linking agent, the polymer precursor comprising a first component, which has a halogen functional group, and a second component, which does not have a halogen functional group, and the amount of the first component in the polymer precursor being 20-80 wt %; polymerizing the polymer precursor to form a polymer; carbonizing the polymer to obtain a template-carbon complex; and removing the template from the template-carbon complex.

公开(公告)号：US20220278335A1

公开(公告)日：2022-09-01

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 ,  H01M4/92 ,  H01M8/1018 ,  H01M8/1004 ,  H01M4/88

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.