公开(公告)号：US10854886B2

公开(公告)日：2020-12-01

申请号：US16268856

申请日：2019-02-06

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jong Hyun Jang ,  Hee-Young Park ,  Jea-woo Jung ,  Hyoung-Juhn Kim ,  Dirk Henkensmeier ,  Sung Jong Yoo ,  Jin Young Kim ,  So Young Lee ,  Hyun Seo Park

IPC: H01M4/92

Abstract: A method for preparing a carbon-supported, platinum-cobalt alloy, nanoparticle catalyst includes mixing a solution containing, in combination, a platinum precursor, a transition metal precursor consisting of a transition metal that is cobalt, carbon, a stabilizer that is oleyl amine, and a reducing agent that is sodium borohydride to provide carbon-supported, platinum-cobalt alloy nanoparticles, and washing the carbon-supported, platinum-cobalt alloy, nanoparticles using ethanol and distilled water individually or in combination followed by drying at room temperature to obtain dried carbon-supported, platinum-cobalt alloy, nanoparticles; treating the dried carbon-supported, platinum-cobalt alloy, nanoparticles with an acetic acid solution having a concentration ranging from 1-16M to provide acetic acid-treated nanoparticles, and washing the acetic acid-treated nanoparticles using distilled water followed by drying at room temperature to obtain dried acetic acid-treated nanoparticles; and heat treating the dried acetic acid-treated nanoparticles at a temperature ranging from 600 to 1000° C. under a hydrogen-containing atmosphere.

公开(公告)号：US11090634B2

公开(公告)日：2021-08-17

申请号：US16268913

申请日：2019-02-06

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY ,  GLOBAL FRONTIER CENTER FOR MULTISCALE ENERGY SYSTEMS

Inventor： Sung Jong Yoo ,  Sehyun Lee ,  Hee-Young Park ,  Jong Hyun Jang ,  Jin Young Kim ,  Hyoung-Juhn Kim ,  Jea-woo Jung

IPC: B01J23/42 ,  B01J37/16 ,  H01M4/92

Abstract: Disclosed is a method for preparing a carbon-supported platinum-transition metal alloy nanoparticle catalyst using a stabilizer. According to the method, the transition metal on the nanoparticle surface and the stabilizer are simultaneously removed by treatment with acetic acid. Therefore, the method enables the preparation of a carbon-supported platinum-transition metal alloy nanoparticle catalyst in a simple and environmentally friendly manner compared to conventional methods. The carbon-supported platinum-transition metal alloy nanoparticle catalyst can be applied as a high-performance, highly durable fuel cell catalyst.