Achieving in-situ regeneration of heterogeneous catalysts to solve the shedding and dissolution questions of catalysts loaded in electrode is significantly important for oxygen evolution reaction (OER). Herein, we propose a new concept analogous to homogeneous catalysis to construct in-situ regenerative electrodes to achieve long-term OER, in which the solution of metal salt dispersed in the alkaline electrolyte is considered as electrocatlaysts/pre-catalyst to in-situ generate the active species on the surface of the current collector during OER. An uninterrupted OER process of 300 h at a high current density about 80 mA cm⁻² is accomplished by the new method. Importantly, in the unique system, the liquid-phase dispersed metal salt in the electrolyte as pre-catalysts, which is analogous to homogenous catalysis system, guarantees the in-situ continuous regeneration of active species, and therefore can solve the shedding and dissolution questions of catalysts during OER, while the previously reported traditional methods cannot achieve the continuous process to solve the shedding and dissolution questions of catalysts during OER. It is expected that this work would open a novel avenue for solving the bottleneck problem of long-term continuous OER process.

实现非均相催化剂的原位再生以解决电极中负载的催化剂的脱落和溶解问题对于氧释放反应（OER）至关重要。在此，我们提出了一种类似于均相催化的新概念，以构建原位再生电极以实现长期的OER，其中将分散在碱性电解质中的金属盐溶液视为原位生成的电催化剂/预催化剂OER期间集电器表面上的活性物质。在约80 mA cm ^-2的高电流密度下进行300 h的不间断OER工艺通过新方法完成。重要的是，在独特的系统中，类似于均相催化系统的类似电解质在液相中分散的金属盐作为预催化剂，可保证活性物质在原位连续再生，因此可以解决脱落和溶解问题OER期间的催化剂，而先前报道的传统方法无法实现连续过程来解决OER期间催化剂的脱落和溶解问题。预计这项工作将为解决长期连续OER过程的瓶颈问题开辟一条新途径。