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：US11637306B2

公开(公告)日：2023-04-25

申请号：US16626049

申请日：2018-06-29

Applicant: KOLON INDUSTRIES, INC.

Inventor： Jun-Young Kim ,  Kah-Young Song ,  Nak-Won Kong ,  Jin-Hwa Lee

IPC: H01M8/10 ,  H01M8/1004 ,  H01M4/86 ,  H01M4/88 ,  H01M8/1048 ,  H01M8/1053 ,  H01M8/1086

Abstract: A membrane-electrode assembly, a method for manufacturing the membrane-electrode assembly, and a fuel cell including the membrane-electrode assembly are disclosed. The membrane-electrode assembly includes: an ion exchange membrane; catalyst layers disposed on both sides of the ion exchange membrane respectively; and a functional modification layer disposed between the ion exchange membrane and each of the catalyst layers. The membrane-electrode assembly has a low hydrogen permeability without a reduction of hydrogen ion conductivity, has excellent interfacial bonding properties between the catalyst layers and the ion exchange membrane, and has excellent performance and durability under high temperature/low humidity conditions.