A self-supporting cross-scale hierarchical porous high-entropy alloy electrode and a preparation method thereof

By constructing a self-supporting, multi-scale hierarchical porous high-entropy alloy electrode using liquid-phase conversion and dealloying methods, the problem of insufficient activity and stability of the catalyst in the process of hydrogen production by water electrolysis was solved, and high-efficiency electrode performance was achieved.

CN122105455APending Publication Date: 2026-05-29JIHUA LAB
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIHUA LAB
Filing Date
2024-11-29
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing catalysts have insufficient catalytic activity and stability in the process of hydrogen production by water electrolysis. They are particularly prone to detachment at high current densities, and the generation of bubbles causes the active material to detach, affecting the performance of the electrode.

Method used

A self-supporting, multi-scale hierarchical porous high-entropy alloy electrode was constructed by combining liquid-phase conversion with dealloying. By forming a hierarchical porous structure, including micro-pores and nano-pores, the stability and activity of the catalyst were enhanced.

Benefits of technology

It achieves stable operation for a long time under high current density, has high catalytic activity and is not easy to detach, improves the efficiency of bubble generation and detachment, and significantly improves electrode performance.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122105455A_ABST
    Figure CN122105455A_ABST
Patent Text Reader

Abstract

The application relates to the technical field of hydrogen production electrodes, and mainly relates to a self-supporting cross-scale hierarchical porous high-entropy alloy electrode and a preparation method thereof. The preparation method comprises the following steps: dissolving organic film components in a solvent to obtain an organic solution; weighing alloy precursor powder, mixing the alloy precursor powder through high-energy ball milling, and then adding the alloy precursor powder into the organic solution to obtain a casting solution; coating the casting solution into a film, obtaining a composite film through phase conversion, drying the composite film, heating the composite film to remove the organic film components, and then sintering to obtain an alloy metal film; and removing the alloy of the alloy metal film to obtain the self-supporting cross-scale hierarchical porous high-entropy alloy electrode. The self-supporting cross-scale hierarchical porous high-entropy alloy electrode prepared through the application can withstand long-time stable work under a large current density, has better stability compared with a powder-shaped nanomaterial, is not easy to fall off, and has high catalytic activity.
Need to check novelty before this filing date? Find Prior Art