公开(公告)号：US11813600B2

公开(公告)日：2023-11-14

申请号：US16767721

申请日：2018-07-05

Applicant: KOREA INSTITUTE OF ENERGY RESEARCH

Inventor： Gu-gon Park ,  Eun-jik Lee ,  Dong-chul Park ,  Sung-dae Yim ,  Chang-soo Kim ,  Won-yong Lee ,  Tae-hyun Yang ,  Seok-hee Park ,  Min-jin Kim ,  Young-jun Sohn ,  Byung-chan Bae ,  Seung-gon Kim ,  Dong-won Shin ,  Hwan-yeong Oh

IPC: B01J37/02 ,  H01M4/90 ,  B01J23/755 ,  B01J35/02 ,  B01J21/18 ,  B01J23/42 ,  B01J23/75 ,  B01J23/89 ,  B01J35/00 ,  B01J37/08 ,  B01J37/16 ,  B01J37/34 ,  H01M4/92

CPC classification number: B01J37/0221 ,  B01J21/18 ,  B01J23/42 ,  B01J23/75 ,  B01J23/755 ,  B01J23/892 ,  B01J23/8913 ,  B01J35/002 ,  B01J35/008 ,  B01J35/0013 ,  B01J35/02 ,  B01J37/08 ,  B01J37/16 ,  B01J37/343 ,  H01M4/92

Abstract: The present disclosure is related to a method for preparing a gaseous- or liquid-nitridation treated core-shell catalyst and, more specifically, to a method for preparing a gaseous- or liquid-nitridation treated core-shell catalyst comprising steps of: nitridation-treating a transition metal precursor core and noble metal precursor shell particles in the presence of a gaseous nitrogen source; or forming a transition metal precursor core and noble metal precursor shell particles, by means of a liquid nitrogen source, and at the same time allowing the nitrogen source to bond with the transition metal precursor and thus allowing nitridation treatment. Therefore, the present disclosure allows a high nitrogen content in the core and thus enables a prepared catalyst to have excellent durability, a small average particle size and high degree of dispersion and uniformity, and thus to be suitable for the fuel cell field.