To improve the efficiency of water electrolysis, developing efficient oxygen evolution reaction (OER) electrocatalysis is extremely important due to its four‐electron transfer dynamics. In this work, a π‐conjugated molecule (2,3,6,7,10,11‐hexahydroxytriphenylene, HHTP), which can accelerate the electron transfer, is coated directly on pristine ZIF‐67, resulting in a composite named HHTP@ZIF‐67, via a simple one‐step solvothermal method. The obtained HHTP@ZIF‐67 possesses a Brunauer–Emmett–Teller surface area of 2013.9 m² g⁻¹ and displays microporous behavior, which can provide enough active sites for OER. The double‐layer capacitance of HHTP@ZIF‐67 is also enhanced, corresponding to an enlarged electrochemical active surface area. HHTP@ZIF‐67 presents a quite low overpotential of 238 mV at 10 mA cm⁻² in 1.0 m KOH. This material synthesized via the simple coating strategy is promising in the application of energy conversion devices.

中文翻译：

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π共轭分子增强了金属-有机骨架，成为高效的析氧反应催化剂

为了提高水电解效率，开发有效的氧释放反应（OER）电催化由于其四电子转移动力学而极为重要。在这项工作中，可以加速电子转移的π共轭分子（2,3,6,7,10,11-六羟基三亚苯基，HHTP）直接涂覆在原始ZIF-67上，从而形成名为HHTP @的复合物。 ZIF-67，通过简单的一步溶剂热法进行。所获得的HHTP @ ZIF-67具有2013.9 m ² g ^-1的Brunauer-Emmett-Teller表面积并显示微孔行为，可以为OER提供足够的活性位点。HHTP @ ZIF-67的双层电容也得到了增强，对应于更大的电化学活性表面积。HHTP @ ZIF‐67在1.0 m KOH中的10 mA cm ^-2处呈现238 mV的极低电势。通过简单的涂覆策略合成的这种材料在能量转换装置的应用中很有前途。