公开(公告)号：US20200346199A1

公开(公告)日：2020-11-05

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 ,  B01J23/42 ,  B01J23/75 ,  B01J23/755 ,  B01J35/02 ,  B01J21/18

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.