Oxygen evolution reaction (OER) catalysts suffer from degradation under harsh oxygen evolution conditions, especially at large current densities, which is a longstanding challenge when developing OER catalysts for industrial applications. Here, we report ultra-stable multicomponent alloys with outstanding OER performance, created by forming two-layered nanostructures in noble metal-free multicomponent alloys, which boost activity and stability simultaneously through a counterintuitive parallel-mechanism strategy. The outer multicomponent amorphous oxide layer endows compelling OER activity, while the underneath layer affords dynamic replenishment capability for sustainable performance (working stably at least 1,600 h at 500 mA cm⁻²) in alkaline electrolytes. More appealing is that the catalyst can be easily revitalized, significantly extending its service durability and reducing its cost. This finding can be applied to develop other cost-efficient catalysts with considerable potential for industrial applications, offering a design paradigm to break the activity-stability trade-off of electrocatalysts.

析氧反应（OER）催化剂在恶劣的析氧条件下，特别是在大电流密度下会发生降解，这是开发用于工业应用的OER催化剂时长期面临的挑战。在此，我们报告了具有出色 OER 性能的超稳定多组分合金，该合金是通过在不含贵金属的多组分合金中形成两层纳米结构而创建的，该合金通过违反直觉的并行机制策略同时提高活性和稳定性。外部多组分非晶氧化物层具有引人注目的 OER 活性，而底层提供动态补充能力，可在碱性电解质中实现可持续性能（在 500 mA cm ⁻² 下稳定工作至少 1,600 小时）。更有吸引力的是，催化剂可以很容易地恢复活力，从而显着延长其使用寿命并降低其成本。这一发现可用于开发其他具有巨大工业应用潜力的经济高效的催化剂，提供打破电催化剂活性与稳定性权衡的设计范例。