Electrode material for simulated seawater and preparation method and application thereof

By using atomically dispersed iron catalytic material supported by nitrogen-doped carbon support in simulated seawater, the problems of reduced activity and insufficient anti-chlorine ion toxicity in the oxygen reduction reaction are solved, and high-efficiency catalytic oxygen reduction reaction and long-term stability are achieved, which is better than the performance of commercial platinum carbon catalysts.

CN119725576AInactive Publication Date: 2025-03-28HAINAN GREEN RAN NEW ENERGY TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202411731274.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-29
Publication Date
2025-03-28
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

In simulated seawater, existing electrode materials have reduced activity and insufficient anti-chlorine ion toxicity in oxygen reduction reactions, which limits the development of neutral water-based metal-air batteries.

Method used

Using atomically dispersed iron catalytic material supported by a nitrogen-doped carbon support, the high-density atomic dispersed active sites are constructed on the nitrogen-doped carbon support to enhance the adsorption, activation and reduction reaction efficiency of oxygen molecules and improve the anti-chlorine ion toxicity ability.

Benefits of technology

It realizes efficient catalytic oxygen reduction reaction in simulated seawater, significantly improving the oxygen reduction activity and long-term stability of the electrode materials, and is better than the performance of commercial platinum carbon catalysts.

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Abstract

The invention discloses an electrode material with high catalytic activity in simulated seawater as well as a preparation method and application of the electrode material. The electrode material is an atomic-scale dispersed iron catalytic material loaded by a nitrogen-doped carbon carrier; wherein iron atoms are anchored on the carbon carrier in a mode of coordination with nitrogen atoms, and the general formula of the catalytic material is Fe-N-C. The preparation method of the electrode material disclosed by the invention comprises the following steps: (1) dissolving ferric salt and zinc salt in a first solvent, and stirring until the ferric salt and the zinc salt are completely dissolved to obtain a precursor solution; (2) dissolving a nitrogen-rich organic ligand in a second solvent, and stirring until the nitrogen-rich organic ligand is completely dissolved to obtain a ligand solution; (3) mixing the precursor solution and the ligand solution, fully stirring, centrifuging, washing and drying to obtain powder; and (4) fully grinding the powder, and carrying out pyrolysis treatment in a nitrogen atmosphere. The prepared electrode material has high oxygen reduction activity in simulated seawater electrolyte.
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