Nickel Oxide-Based Iron-Iridium Co-Electrodeposited Catalyst, Preparation Method Thereof, and Application Thereof

The nickel oxide-based iron-iridium bimetallic electrodeposited catalyst addresses the challenges of active site insufficiency and metal aggregation by creating a multi-scale catalytic interface through controlled synthesis, enhancing catalytic performance and stability.

US20260078508A1Pending Publication Date: 2026-03-19XI AN JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
Filing Date
2025-11-14
Publication Date
2026-03-19

AI Technical Summary

Technical Problem

Existing chemical synthesis methods for electrocatalysts face challenges in achieving continuous control of catalytic interface size, resulting in insufficient reactive active sites, poor catalytic performance, and stability due to metal site aggregation, which affects charge transfer efficiency.

Method used

A method for preparing a nickel oxide-based iron-iridium bimetallic electrodeposited catalyst involves forming a Ni-alanine complex, pyrolyzing it to obtain nickel oxide, and depositing iron-iridium bimetal on the nickel oxide working electrode through electrochemical deposition, with precise control of molar ratios and electrochemical parameters to create a multi-scale catalytic interface.

Benefits of technology

The method provides a catalyst with abundant active sites, enhanced electron transfer efficiency, and improved catalytic activity and stability, suitable for large-scale production.

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Abstract

The present invention discloses a nickel oxide-based iron-iridium bi-electrocatalytic catalyst, its preparation method and application, belonging to the technical field of catalytic materials. In the present invention, a nickel oxide material is prepared as a nickel oxide working electrode, and a mixed solution of an iron precursor, an iridium precursor, and an OH- source is used as an electrolyte. Iron-iridium bimetal is deposited on the nickel oxide working electrode by electrochemical deposition to obtain a nickel oxide-based iron-iridium bi-electrocatalytic catalyst. The preparation method provided by the present invention realizes the multi-scale dispersion of two metal elements, iron and iridium, on the surface of the nickel oxide support. This multi-scale structure not only provides abundant catalytic active sites, enabling the catalyst to more efficiently adsorb and activate reactants during the reaction process, but also significantly enhances the electron transfer efficiency, thereby improving the catalytic activity of the catalyst. In addition, the synergistic effect of iron and iridium optimizes the electronic structure of the catalyst, further improving its catalytic performance.
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