• 专利标题:   Producing carbon-supported core-shell structure alloy particle catalyst for oxygen reduction reaction by reducing first metal core nanoparticles after adding second metal and performing galvanic substitution after adding third metal.
  • 专利号:   KR2021120642-A, KR2361486-B1
  • 发明人:   YOO S J, CHOI D I, PIL K, YEONSUN S, JEONG J Y, KIM H J, CHANG J H, KIM J, PARK H S, LEE S Y, YOUNG P H
  • 专利权人:   KOREA INST SCI TECHNOLOGY, GLOBAL FRONTIER CENT MULTISCALE ENERGY, UNIV CHONBUK NAT IND COOP FOUND
  • 国际专利分类:   B01J021/18, B01J023/89, B01J035/00, B01J037/02, B01J037/03, B01J037/16, C25B001/04, H01M004/86, H01M004/92
  • 专利详细信息:   KR2021120642-A 07 Oct 2021 H01M-004/86 202187 Pages: 14
  • 申请详细信息:   KR2021120642-A KR037612 27 Mar 2020
  • 优先权号:   KR037612

▎ 摘  要

NOVELTY - A carbon-supported core-shell structure alloy particle catalyst is produced by (a) preparing suspension for reduction reaction by dispersing carbon-based support on which core nanoparticles made of 1st metal are supported in distilled water; (b) adding 2nd metal precursor to the suspension for reduction reaction of 1st metal core nanoparticles supported on the support and performing a reduction reaction to obtain resultant solution of a reduction reaction and forming core-shell structured alloy particle comprising 2nd metal shell layer formed on the surface of the core nanoparticles; and (c) adding precursor of 3rd metal to resultant solution of reduction reaction and performing a galvanic substitution reaction to prepare alloy particles having a core-shell structure in which a portion or all of 2nd metal is substituted with 3rd metal. USE - Production of carbon-supported core-shell structure alloy particle catalyst for oxygen reduction reaction (claimed). ADVANTAGE - The carbon-supported core-shell structured alloy particle catalyst can be mass-produced at a low production cost, which has an advantageous effect in terms of price competitiveness. In addition, it is environment-friendly by limiting the use of chemicals, such as reducing agents or surfactants, and there is no process such as heat treatment and/or acid treatment, so that the carbon-supported core-shell structure alloy particle catalyst can be easily prepared. The carbon-supported core-shell structured alloy particle catalyst exhibits excellent oxygen reduction activity and durability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for carbon-supported core-shell structure alloy particle catalyst comprising (A) carbon-based support; (B) a set of 1st metal nanoparticle cores supported on the carbon-based support; and (C) 2nd metal shell layer formed on the surface of the set of 1st metal nanoparticle cores, where a portion or all of the 2nd metal forming the shell layer is substituted with 3rd metal.