Au-MODIFIED PtNi-BASED ALLOY NANOPARTICLES, METHOD FOR MANUFACTURING THE SAME, AND ELECTRODE CATALYST

Title:

Au-MODIFIED PtNi-BASED ALLOY NANOPARTICLES, METHOD FOR MANUFACTURING THE SAME, AND ELECTRODE CATALYST

Document Type and Number:

Japanese Patent JP2022162683

Kind Code:

A

Abstract:

To provide novel Au-modified PtNi-based alloy nanoparticle having excellent durability, a method for manufacturing the same, and an electrode catalyst using the same.SOLUTION: Au-modified PtNi-based alloy nanoparticles include PtNi-based alloy nanoparticles made of a PtNi-based alloy containing at least Pt and Ni, and Au coating parts of the surfaces of the PtNi-based alloy nanoparticles. The PtNi-based alloy nanoparticle has an octahedron or truncated octahedron. An electrode catalyst includes a carrier formed of a conductive material, and Au-modified PtNi-based alloy nanoparticles carried on the surface of the carrier. Such Au-modified PtNi-based alloy nanoparticles are obtained by adding an Au precursor solution to a dispersion liquid in which PtNi-based alloy nanoparticles each having the octahedron or truncated octahedron are dispersed, and heating it to a predetermined temperature.SELECTED DRAWING: Figure 4

Inventors:

NAGAI TOMOYUKI
KUWAKI CHO
KODAMA KENSAKU

Application Number:

JP2021067612A

Publication Date:

October 25, 2022

Filing Date:

April 13, 2021

Export Citation:

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Assignee:

TOYOTA CENTRAL RES & DEV

International Classes:

H01M4/86; B01J23/89; B01J35/02; B82Y30/00; B82Y40/00; H01M4/88; H01M4/90; H01M4/92

Attorney, Agent or Firm:

Fumio Hatakeyama

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