NiFe block alloy catalyst and preparation method and application thereof
By femtosecond laser treatment of commercial NiFe block alloys, a micro-nano structure is constructed, and a supportive NiFe block alloy catalyst is prepared, which solves the problems of high interface resistance and easy falloff in the existing technology, and achieves efficient and stable electrocatalytic hydrolysis of hydrogen under large currents, with good industrial application prospects.
CN120244264APending Publication Date: 2025-07-04GUIZHOU UNIV
Patent Information
- Application Number
- CN202510414319.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2025-07-04
AI Technical Summary
Technical Problem
The existing non-precious metal-based OER catalysts have problems such as high interface resistance, easy shedding of active substances and short life, which limits their application in industrial electrolytic aquatic hydrogen, especially in poor performance under large currents.
Method used
The commercial NiFe bulk alloy was treated with femtosecond laser to construct an oxide/hydroxide/hydroxyoxide micro-nano structure, increase the active site, and prepare a supported NiFe bulk alloy catalyst.
Benefits of technology
It exhibits efficient and stable electrocatalytic activity under large currents, has good durability, is suitable for industrial electrolysis of aquatic hydrogen, and is cheap.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN120244264A_ABST
Abstract
The invention discloses a NiFe block alloy catalyst as well as a preparation method and application thereof. The NiFe block alloy catalyst is prepared according to the following steps: (1) grinding, polishing, cleaning and drying the surface of a commercial block NiFe alloy for later use; (2) the treated block NiFe alloy is subjected to femtosecond laser treatment; and (3) washing the sample treated by the femtosecond laser with deionized water and ethanol, and drying to obtain the NiFe block alloy catalyst. The NiFe alloy-based oxygen evolution reaction (OER) electrocatalyst developed by the invention is low in cost, and is an efficient and stable electrocatalyst under large current. A commercial Ni-Fe alloy is subjected to femtosecond laser treatment, an oxide / hydroxide / oxyhydroxide micro-nano structure is constructed on the surface of the commercial Ni-Fe alloy, the intrinsic catalytic activity of the commercial Ni-Fe alloy is improved, and more active sites are exposed. The N iFe alloy treated by femtosecond laser is used as a water electrolysis oxygen evolution catalyst, and has excellent activity and good durability under high current density.
Need to check novelty before this filing date? Find Prior Art
Citation Information
Patent Citations
Preparation method of magnetic field induced foamed nickel-iron alloy loaded nickel-iron hydroxide lamellar catalyst and application thereof
CN113061935A