Pristine metal organic frames (MOFs) have emerged directly as the electrocatalysts for oxygen evolution reaction (OER). However, the OER performance needs further improvement and the real active sites remain exclusive. Herein, the effect of ligands on the performance of MOFs and the real active sites of each MOFs were explored. Specifically, three Ni based metal organic frames (Ni-MOFs) with different ligands including formic acid (FA), 1,4-benzenedicarboxylic acid (BDC) and 1,3,5-benzenetricarboxylic (BTC) were prepared by a solvothermal method. The morphology, specific surface area, porosity, wettability, electrochemically surface area (ECSA) of each Ni-MOFs were tested. However, none of them could be well correlated to the OER performance except the content of Ni(OH)₂ on the surface from XPS test. Moreover, the OER performance of each Ni-MOF could be improved by cyclic voltammetry (CV) and chronopotentiometry (CP). The morphology and composition of each Ni-MOF before and after electrochemical activation further reveal the real active sites of three Ni-MOFs investigated here were Ni(OH)₂. These results were expected to provide useful information for designing more excellent OER electrocatalysts based on MOFs.

原始的金属有机框架（MOF）已直接作为氧释放反应（OER）的电催化剂出现。但是，OER性能需要进一步提高，并且实际活动站点仍然是专有的。在此，探讨了配体对MOF的性能和每个MOF的真实活性位点的影响。具体地，通过溶剂热法制备了具有不同配体的三个Ni基金属有机骨架（Ni-MOF），包括甲酸（FA），1,4-苯二甲酸（BDC）和1,3,5-苯三甲酸（BTC）。测试了每种Ni-MOF的形态，比表面积，孔隙率，润湿性，电化学表面积（ECSA）。但是，除了Ni（OH）₂的含量外，没有一个能与OER性能很好地相关。在XPS测试中的表面上。此外，可以通过循环伏安法（CV）和计时电位法（CP）来改善每个Ni-MOF的OER性能。电化学活化前后每个Ni-MOF的形态和组成进一步揭示了此处研究的三个Ni-MOF的真实活性位为Ni（OH）₂。这些结果有望为基于MOFs设计更优异的OER电催化剂提供有用的信息。