A composite anode with a tunnel structure AgxMn8O16 inducing interface reconstruction of a lead-based anode, a preparation method and applications thereof
By combining the tunnel-structured AgxMn8O16 particles with the lead matrix, an in-situ β-PbO2 active layer is formed, solving the problems of high oxygen evolution overpotential and high silver consumption in lead-based anodes. This results in a composite anode with low silver content, high catalytic activity, and long lifespan, suitable for electrowinning in hydrometallurgical processes such as zinc and copper.
CN122406310APending Publication Date: 2026-07-17KUNMING UNIV OF SCI & TECH
Patent Information
- Application Number
- CN202610530209.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-04-21
- Publication Date
- 2026-07-17
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Figure CN122406310A_ABST
Abstract
本发明涉及一种隧道结构AgxMn8O16诱导铅基阳极界面重构的复合阳极、制备方法及其应用，属于湿法冶金电极材料与电催化技术领域。本复合阳极包括铅基体、分散于铅基体中的隧道结构AgxMn8O16颗粒以及通过电化学极化原位重构形成的β‑PbO2活性层。AgxMn8O16具有Hollandite型隧道结构，由MnO6八面体形成2×2一维隧道，隧道内部容纳Ag+阳离子。本发明通过调控Ag在隧道结构中的占位丰度，实现对Mn‑O骨架电子结构的调制，利用隧道结构氧化物作为“异质诱导晶种”驱动铅基阳极界面发生原位重构，形成稳定的β‑PbO2活性界面。复合阳极中银总含量≤0.1wt.%，析氧过电位较传统Pb‑Ag阳极降低80～120mV，耐腐蚀性能提高8倍以上。本发明突破了传统合金化范式，实现超低银含量与高催化活性的统一，对于推动有色冶金行业节能降耗具有重要意义。
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Citation Information
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