Insight into the surface-reconstruction of metal–organic framework-based nanomaterials for the electrocatalytic oxygen evolution reaction

•The preconditions of surface reconstruction in MOFs-based nanomaterials are reviewed from both internal and external aspects.•The surface reconstruction phenomenon of MOFs-based electrocatalysts for OER is summarized.•The effect of surface reconstruction on catalytic performance of MOFs-based nanomaterials is systematically summarized.•The challenges and opportunities of surface reconstruction are proposed.