Catalyst for hydrogen evolution reaction containing ruthenium-based alloy, water electrolysis electrode containing the same, and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-2025250698-A1
Application number	US-202418795522-A
Country	US
Kind code	A1
Filing date	Aug 6, 2024
Priority date	Feb 5, 2024
Publication date	Aug 7, 2025
Grant date	—

Abstract

Disclosed herein are a catalyst for a hydrogen evolution reaction, a water electrolysis electrode including the same, and a method of manufacturing the same, wherein the catalyst can be manufactured at room temperature, and catalyst diversity can be given through an alloy structure including ruthenium and two or more metals. According to the present disclosure, the catalyst can be manufactured at room temperature due to characteristics of an electroplating manufacturing method, and the catalyst diversity can be given through the alloy structure that includes ruthenium and two or more metals.

First claim

What is claimed is:

1 . A catalyst for a hydrogen evolution reaction, the catalyst comprises:
a support; and a ruthenium alloy electroplated on the support, wherein the alloy comprises ruthenium, and two or more metals selected from the group consisting of Au, Ni, Co, Mo, and Cu.

2 . The catalyst of claim 1 , wherein the support is titanium or carbon.

3 . The catalyst of claim 1 , wherein the ruthenium alloy includes ruthenium, Au, and Mo.

4 . The catalyst of claim 1 , wherein the ruthenium alloy is represented by Chemical Formula 1 below:
Ru x Au y Mo (1-y)   [Chemical Formula 1]
In Chemical Formula 1, x is 1, and y is 0 to 1.

5 . A hydrogen evolution electrode comprising the catalyst according to claim 1 .

6 . A water electrolysis electrode comprising the hydrogen electrode according to claim 5 .

7 . The water electrolysis electrode of claim 6 , wherein the water electrolysis is a polymer electrolyte membrane water electrolysis (PEMWE) electrode.

8 . A method of manufacturing a catalyst for a hydrogen evolution reaction, the method comprises:
preparing a precursor including a ruthenium precursor and a precursor including two or more metals selected from the group consisting of Au, Ni, Co, Mo, and Cu; and electroplating a ruthenium alloy on a support using the precursors.

9 . The method of claim 8 , wherein the support is titanium or carbon.

10 . The method of claim 8 , wherein the precursor including two or more metals selected from the group consisting of Au, Ni, Co, Mo, and Cu include an Au precursor and a Mo precursor.

11 . The method of claim 8 , wherein the precursor including at least two metals selected from the group consisting of Au, Ni, Co, Mo, and Cu includes an Au precursor and a Mo precursor, and
wherein a concentration ratio of the ruthenium precursor, the Au precursor, and the Mo precursor is 1:0.05 to 0.5:0.05 to 0.25.

12 . The method of claim 8 , wherein the method is performed at room temperature.

13 . The method of claim 8 , wherein the electroplating potential is −0.4 to −0.8 V Ag/AgCl .

14 . The method of claim 8 , wherein the electroplating time is 3 to 30 minutes.

Assignees

• Korea Inst Sci & Tech

Inventors

• Lee Jaewon
• Kim Junhyeong
• Oh Jin-Ho
• Lim Katie Heeyum
• Seo Bora
• Park Hee-Young
• Lee So Young
• Yoo Sung Jong
• Kim Jin Young
• Jang Jong Hyun
• Park Hyun S
• Cho Sung Ki

Classifications

• Y02E60/36

  Hydrogen production from non-carbon containing sources, e.g. by water electrolysis · CPC title

• C25B11/073

  characterised by the electrocatalyst material · CPC title

• C25B1/04

  by electrolysis of water · CPC title

• B01J23/64

  with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium · CPC title

• B01J23/686

  with molybdenum · CPC title