Hybrid metal-organic framework (MOF) derivatives play a significant role in the novel catalyst development in energy conversion reactions. Here, we demonstrated the low-temperature fully fluorinated zeolitic imidazole framework (ZIF) coupled with a three-dimensional open framework Prussian blue analog (PBA) with combined advantages for electrocatalytic oxygen evolution reaction (OER) in water splitting reaction. The spectroscopic analysis and the electrochemical studies revealed the combined advantages of efficient electronic effect and active site synergism. Because of good conductivity improvement by N-doped carbon derived from ZIF and the high electrochemical surface area and active site exposure from PBA derivatives, good catalytic performance was obtained on the optimal catalyst of CoNi ZIF/CoFe-PBA-F-300, which required a low overpotential of 250 mV to reach 10 mA/cm loaded on the glassy carbon electrode, with Tafel slope of 47.4 mV/dec, and very high dynamic and steady stability. In addition, the multi-component with the mixed structure from highly polar metal fluorides promoted the easy formation of the active phase as revealed by the post-sample analysis. The current results showed a novel composite catalyst materials development from the hybrid MOF derivatives, which would be promising in the electrolysis of water oxidation reactions and energy-relevant catalysis reactions.

中文翻译：

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全氟化杂化沸石咪唑/普鲁士蓝类似物，具有高效析氧反应的综合优势

杂化金属有机骨架（MOF）衍生物在能量转换反应的新型催化剂开发中发挥着重要作用。在这里，我们展示了低温全氟化沸石咪唑骨架（ZIF）与三维开放骨架普鲁士蓝类似物（PBA）的结合，在水分解反应中的电催化析氧反应（OER）中具有综合优势。光谱分析和电化学研究揭示了高效电子效应和活性位点协同作用的综合优势。由于ZIF衍生的N掺杂碳良好的电导率改善以及PBA衍生物的高电化学表面积和活性位点暴露，CoNi ZIF/CoFe-PBA-F-300的最佳催化剂获得了良好的催化性能，这需要250 mV 的低过电势可在玻碳电极上达到 10 mA/cm 的负载，Tafel 斜率为 47.4 mV/dec，以及非常高的动态稳定性和稳态稳定性。此外，样品后分析表明，高极性金属氟化物混合结构的多组分促进了活性相的容易形成。目前的结果表明，由杂化 MOF 衍生物开发出一种新型复合催化剂材料，该材料在水氧化反应和能源相关催化反应的电解中具有广阔的前景。