Heterogeneous high-entropy alloy catalyst as well as preparation method and application thereof

The invention discloses an isomeric high-entropy alloy catalyst as well as a preparation method and application thereof. The isomeric high-entropy alloy catalyst is composed of a surface noble metal and a non-noble metal high-entropy alloy carrier. The preparation method of the heterogeneous high-entropy alloy catalyst comprises the following four main steps: preparing a non-noble metal salt solution, loading non-noble metal, preparing a non-noble metal high-entropy alloy, and preparing the heterogeneous high-entropy alloy catalyst. According to the heterogeneous high-entropy alloy catalyst, a small amount of precious metal is only distributed on the surface of the high-entropy alloy, the internal non-precious metal high-entropy alloy coordinates the electronic structure of the precious metal on the surface in a multi-element mode to improve the catalytic activity, and meanwhile the internal high-entropy alloy has high-entropy stability; the heterogeneous high-entropy alloy catalyst provided by the invention