Molten salt iron-air battery cathode bifunctional electrocatalyst and application thereof

Abstract

The invention relates to a molten salt iron-air battery cathode bifunctional electrocatalyst and an application thereof. The preparation method of the molten salt iron-air battery cathode bifunctionalelectrocatalyst comprises steps of 1, dissolving manganous nitrate, nickel nitrate and lanthanum nitrate in the distilled water, and uniformly stirring and mixing materials to form nitrate precursorsolution; dissolving hexadecyl trimethyl ammonium bromide in the distilled water, stirring the mixture to prepare micelle solution, adding the micelle solution into nitrate precursor solution while stirring, and finally adding urea to obtain mixed solution; 2, carrying out hydrothermal reaction of the mixed solution and the cut foamed nickel to obtain foamed nickel loaded with the electrocatalystprecursor; and 3, calcining the foamed nickel loaded with the electrocatalyst precursor at 700 DEG C for 6 hours to finally prepare the NiMnO3-La2O3 fused salt iron-air battery cathode bifunctional electrocatalyst. The method is advantaged in that the synthesized bifunctional electrocatalyst has stable OER / ORR bifunctional activity under the condition of high-temperature molten salt environment.

Description

[0001] 1. Technical field: [0002] The invention relates to the technical field of iron-air battery catalysts, in particular to a molten-salt iron-air battery cathode bifunctional electrocatalyst and its application. [0003] 2. Background technology: [0004] Molten-salt iron-air battery is a battery technology that uses high-temperature molten salt as the electrolyte to achieve energy storage. As a clean energy source, it has high specific energy; in addition, iron resources are abundant, cheap, and non-toxic, which is different from metals such as lithium and zinc. Electrode, iron electrode has no dendrite formation in the charge and discharge process, has a long life, and is safer than metal lithium and sodium; iron has a high storage capacity of multiple electrons (transfer 3 electrons), which is far greater than the single-electron storage lithium-ion battery The power storage capacity is also much higher than that of Na-S and Na-NiCl 2 The representative high-temperatu...

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Problems solved by technology

[0007] An object of the present invention is to provide a dual-functional electrocatalyst for molten salt iron-air battery cathode, which is used to solve the problem of the existing molten salt iron-air battery electrocatalyst in a high temperature molten salt environment The problem that the structure and performance are not stable enough

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