公开(公告)号：US11289711B2

公开(公告)日：2022-03-29

申请号：US16934893

申请日：2020-07-21

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jong Hyun Jang ,  Hyun Seo Park ,  Hee-Young Park ,  Katie Heeyum Lim ,  Oh Sub Kim ,  Hyoung-Juhn Kim ,  Jin Young Kim ,  Sung Jong Yoo ,  Dirk Henkensmeir ,  So Young Lee

IPC: H01M4/92 ,  H01M4/86 ,  H01M4/88 ,  H01M4/90

Abstract: Disclosed are a catalyst electrode for a fuel cell, a method for fabricating the catalyst electrode, and a fuel cell including the catalyst electrode. The presence of an ionomer-ionomer support composite in the catalyst electrode prevents the porous structure of the catalyst electrode from collapsing due to oxidation of a carbon support to avoid an increase in resistance to gas diffusion and can stably secure proton channels. The presence of carbon materials with high conductivity is effective in preventing the electrical conductivity of the electrode from deterioration resulting from the use of a metal oxide in the ionomer-ionomer support composite and is also effective in suppressing collapse of the porous structure of the electrode to prevent an increase in resistance to gas diffusion in the electrode. Based on these effects, the fuel cell exhibits excellent performance characteristics and prevents its performance from deteriorating during continuous operation.

公开(公告)号：US11799093B2

公开(公告)日：2023-10-24

申请号：US17677723

申请日：2022-02-22

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jong Hyun Jang ,  Hyun Seo Park ,  Hee-Young Park ,  Katie Heeyum Lim ,  Oh Sub Kim ,  Hyoung-Juhn Kim ,  Jin Young Kim ,  Sung Jong Yoo ,  Dirk Henkensmeir ,  So Young Lee

IPC: H01M4/92 ,  H01M4/86 ,  H01M4/88 ,  H01M4/90

CPC classification number: H01M4/926 ,  H01M4/8652 ,  H01M4/8828 ,  H01M4/8892 ,  H01M4/9016

Abstract: Disclosed are a catalyst electrode for a fuel cell, a method for fabricating the catalyst electrode, and a fuel cell including the catalyst electrode. The presence of an ionomer-ionomer support composite in the catalyst electrode prevents the porous structure of the catalyst electrode from collapsing due to oxidation of a carbon support to avoid an increase in resistance to gas diffusion and can stably secure proton channels. The presence of carbon materials with high conductivity is effective in preventing the electrical conductivity of the electrode from deterioration resulting from the use of a metal oxide in the ionomer-ionomer support composite and is also effective in suppressing collapse of the porous structure of the electrode to prevent an increase in resistance to gas diffusion in the electrode. Based on these effects, the fuel cell exhibits excellent performance characteristics and prevents its performance from deteriorating during continuous operation.