公开(公告)号：US20210170488A1

公开(公告)日：2021-06-10

申请号：US16916974

申请日：2020-06-30

Applicant: KOREA INSTITUTE OF ENERGY RESEARCH

Inventor： Gu-gon PARK ,  Hyun-uk PARK ,  Won-yong LEE ,  Sung-dae YIM ,  Min-jin KIM ,  Young-jun SOHN ,  Byungchan BAE ,  Seung-gon KIM ,  Dongwon SHIN ,  Hwanyeong OH ,  Seung Hee WOO ,  So Jeong LEE ,  Hyejin LEE ,  Yoon Young CHOI ,  Seok-hee PARK ,  Tae-hyun YANG

IPC: B22F9/04 ,  B22F1/00

Abstract: The present disclosure is related to a method to control sizes of core-shell nanoparticles comprising the steps of: manufacturing slurry by irradiating ultrasonic waves to a dispersion solution containing a reducing solvent, a carbon support, a transition metal precursor and a precious metal precursor; manufacturing a solid by filtering the manufactured slurry, followed by washing and drying; and manufacturing a nanoparticle of a transition metal core and a platinum shell by heat-treating the dried solid at a temperature of 450 to 900° C. and a pressure of 1 to 90 bar for 0.5 to 10 hours under N2 atmosphere.