Ternary alloy hydrogen production electrode and preparation method thereof

By performing electrochemical anodizing, carbon-boron co-diffusion, and CV activation treatment on Ni-Cr-Fe ternary alloy foil, a porous structure and enriched Ni/Fe active sites are formed, which solves the problem of poor catalytic performance and stability of NiFe-based catalytic electrodes under high current density and realizes a highly efficient water oxidation reaction.

CN120967414APending Publication Date: 2025-11-18CHONGQING UNIV OF TECH
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Patent Information

Application Number
CN202510894163.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-30
Publication Date
2025-11-18

AI Technical Summary

Technical Problem

Existing NiFe-based catalytic electrodes exhibit poor catalytic performance and stability at high current densities. In particular, the electrode material is prone to peeling off during high-speed mass transfer due to physical bonding, which affects the efficiency of the water oxidation reaction.

Method used

Electrochemical anodizing, carbon boron co-diffusion, and CV activation treatment were performed on Ni-Cr-Fe ternary alloy foil to form a porous structure and enriched Ni/Fe active sites. The active sites were stabilized by carbon boron co-diffusion treatment, thereby enhancing catalytic activity.

Benefits of technology

It improves catalytic activity and stability, enabling effective water oxidation reactions at high current densities and exhibiting excellent alkaline oxygen evolution reaction performance.

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Abstract

The invention discloses a ternary alloy hydrogen production electrode which is prepared by the following steps: 1) carrying out electrochemical anodic oxidation treatment on a Ni-Cr-Fe ternary alloy foil to obtain an initial state foil; 2) carrying out carbonitriding treatment on the initial-state foil to obtain an intermediate-state foil; and 3) carrying out CV activation treatment on the intermediate-state foil to obtain the ternary alloy hydrogen production electrode. According to the preparation method, after the foil is subjected to carbon-boron co-permeation treatment and CV activation treatment, the obtained alloy foil has excellent performance in the subsequent electrocatalytic water oxidation process, and B atoms can accelerate electrochemical self-optimization to generate more high-activity Ni < 3 + > and Fe < 3 + > catalytic sites; c atoms can stabilize related active sites through metal carbon bonds, efficient and stable water electrolysis oxygen evolution catalytic performance can be achieved through the synergistic effect of the two, and the catalyst is suitable for being used and popularized in the field of catalysis.
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