一种富铁钼双金属氧化物电催化剂及其制备方法和应用

The synthesis of iron- and molybdenum-rich bimetallic oxide electrocatalysts using microwave hydrothermal treatment technology solves the problem of molybdenum leaching under strongly alkaline conditions, achieving efficient and stable oxygen evolution reaction performance, and is suitable for industrial water electrolysis and seawater hydrogen production devices.

CN121675013BActive Publication Date: 2026-07-17DONGGUAN UNIV OF TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DONGGUAN UNIV OF TECH
Filing Date
2026-01-13
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies struggle to effectively suppress the dissolution of molybdenum in strongly alkaline, high-potential oxygen evolution reaction environments, leading to structural collapse and rapid performance degradation of iron-molybdenum bimetallic oxide catalysts at high current densities, failing to meet the stability and activity requirements for large-scale industrial applications.

Method used

A microwave hydrothermal treatment technique was used to synthesize an iron-molybdenum bimetallic oxide electrocatalyst. By controlling the doping of molybdenum into the iron-rich oxide lattice, a multi-level micro-nano structure was constructed. Combined with a conductive substrate and nanostructure, the electronic structure and active site distribution were optimized.

Benefits of technology

It significantly improves the durability and conductivity of catalysts, lowers the oxygen evolution reaction energy barrier, enhances stability and efficiency under high current density, and is suitable for industrial high-current electrolysis applications, reducing energy consumption.

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Abstract

本发明公开了一种富铁钼双金属氧化物电催化剂及其制备方法和应用,属于新能源材料与电催化技术领域,制备方法包括以下步骤:将泡沫镍、含铁源和钼源的前驱体溶液充分溶解混合,进行微波水热处理,再将所得产物进行洗涤和真空干燥,制备得到所述富铁钼双金属氧化物电催化剂。即本发明利用微波快速成核实现铁钼双金属氧化物在泡沫基底上的原位构筑,通过钼限域掺杂诱导晶格畸变,形成高密度活性位点与强结构稳定性;催化剂在碱性析氧反应中仅需309 mV过电位即可驱动>2 A cm‑2电流,并在>500 mA cm‑2下稳定运行超120小时,显著突破高电流电解水制氢中阳极催化剂活性与耐久性瓶颈。
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