Lanthanum-doped iron sulfide catalyst as well as preparation method and application thereof

CN120250047APending Publication Date: 2025-07-04LANZHOU UNIV +1
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Patent Information

Application Number
CN202510285587.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-11
Publication Date
2025-07-04

AI Technical Summary

Technical Problem

In the prior art, the stability and long-term durability of the anode catalyst under high current conditions are insufficient, which limits the industrial application of electrocatalytic water decomposition to hydrogen production.

Method used

The Fe3S4 catalyst doped with rare earth metal La doped Fe3S4 catalyst was used to prepare the lanthanum doped nanosheet structure by electrochemical co-deposition method, and combined with vapor phase ion exchange vulcanization, forming a catalyst with good conductivity, large surface area and abundant active sites.

Benefits of technology

It significantly improves the stability and long-term durability of the catalyst under large currents, has excellent industrial electrocatalytic water decomposition performance, and can be stable for more than 1000 hours at a high current density of 0.1A/cm2.

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Abstract

The invention provides a lanthanum-doped iron sulfide anode catalyst which comprises lanthanum-doped Fe3S4, and the molar content of lanthanum is 1%-15%. The invention also provides a preparation method of the lanthanum-doped iron sulfide anode catalyst and application of the lanthanum-doped iron sulfide anode catalyst. The catalyst can obviously improve the electro-catalytic oxygen evolution reaction (OER) of Fe3S4, and is helpful for improving the stability of the Fe3S4 under large current and the durability of the Fe3S4 under long time, so that the catalyst disclosed by the invention has excellent industrial electro-catalytic water decomposition performance.
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