Two-dimensional tungsten carbide nanosheet loaded non-noble metal catalyst as well as preparation and application thereof

A simple method is used to prepare two-dimensional tungsten carbide nanosheets to support non-precious metal catalysts, which solves the problems of complex preparation methods, low yield and insufficient durability in the prior art, and achieves efficient and low-cost catalyst preparation and excellent electrocatalytic performance.

CN119736662AActive Publication Date: 2025-04-01SHANGHAI JIAOTONG UNIV
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Patent Information

Application Number
CN202411902028.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-23
Publication Date
2025-04-01
Estimated Expiration
2044-12-23

AI Technical Summary

Technical Problem

In the prior art, the preparation method of two-dimensional tungsten carbide nanosheets is complex, cannot be produced on a large scale, has low yield, and the durability in the electrolytic process needs to be improved.

Method used

By reacting tungsten in ethanol and aqueous hydrogen peroxide solution, a precursor solution was obtained, and then mechanically stirred in potassium chloride and evaporated with heating to obtain a solid powder. Then calcined in a tube furnace to obtain two-dimensional tungsten carbide nanosheets, and a non-precious metal catalyst supported by two-dimensional tungsten carbide nanosheets was prepared by reducing with a non-precious metal salt in isopropanol.

Benefits of technology

A simple and low-cost preparation method for two-dimensional tungsten carbide nanosheets is realized, which improves the electrocatalytic oxygen evolution reaction performance of the catalyst, reduces the overpotential, increases the reaction rate, enhances durability, and has high practical application prospects.

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Abstract

The invention discloses a preparation method of a two-dimensional tungsten carbide nanosheet loaded non-noble metal catalyst and application of the two-dimensional tungsten carbide nanosheet loaded non-noble metal catalyst to electrolyzed water. The two-dimensional tungsten carbide nanosheet is prepared through a molten salt method for the first time. Then, various different non-noble metal alloys are loaded on the two-dimensional tungsten carbide nanosheets through a wet chemical reduction method, and a series of non-noble metal catalysts loaded by the two-dimensional tungsten carbide nanosheets are prepared. The method is high in universality, simple and convenient to operate and low in cost, and the prepared two-dimensional tungsten carbide nanosheet loaded non-noble metal catalyst shows ultrahigh catalytic activity in the field of electrocatalytic oxygen evolution and has the potential of replacing a commercial ruthenium oxide catalyst.
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