Co-loaded nickel-iron-based three-way catalyst, and preparation method and application thereof
By constructing a multi-level pore structure and oxidative calcination treatment of a Co-loaded nickel-iron-based ternary catalyst, the problems of reduced activity and poor stability of the electrocatalyst under high current density alkaline conditions were solved, achieving efficient hydrogen evolution reaction performance and long-term stability, and having potential for industrial application.
Patent Information
- Application Number
- CN202511244374.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-02
- Publication Date
- 2025-09-30
AI Technical Summary
In existing technologies, under alkaline conditions at high current density (>500 mA cm-2), electrocatalysts generally suffer from reduced activity and poor stability after long-term stability testing, which seriously restricts their industrial application process.
The preparation method of the Co-loaded nickel-iron-based ternary catalyst includes adding a divalent cobalt compound solution to a foamed nickel-iron substrate in a hydrothermal kettle for hydrothermal reaction, followed by rinsing and oxidative roasting to construct a conical network structure with multi-level pores, optimize the synergistic effect of multi-metal active sites, and enhance electron transfer efficiency and catalytic activity.
The HER activity and stability of the catalyst were significantly improved, and an overpotential of only 119 mV was required to reach an industrial-grade current density (1000 mA cm-2). Under this current condition, it can operate stably for more than 3000 hours, showing prospects for industrial application.
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Figure CN120719332A_ABST