Covalent organic polymers have attracted much attention due to their high specific surface area, superlative porosity, and diversity in electronic structure. Herein, a novel porous cobalt-porphyrin-based covalent organic polymer (CoCOP) is fabricated through the Schiff-base condensation reaction, which is used as a difunctional electrocatalyst for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The CoCOP possesses a high surface area and strong synergistic effect between the cobalt-porphyrins and the CN groups, resulting in efficient HER and OER performances. The CoCOP required relatively low overpotentials for both HER (121 mV to reach 1.0 mA cm⁻² and 310 mV to reach 10 mA cm⁻²) and OER (166 mV to reach 1.0 mA cm⁻² and 350 mV to reach 10 mA cm⁻²) in alkaline media. This work may provide a new idea for the design of non-noble metal-based coordination polymers with excellent structure and high electrocatalytic performance.

共价有机聚合物因其高比表面积，最高孔隙率和电子结构的多样性而备受关注。本文中，通过席夫碱缩合反应制备了新型的多孔的钴-卟啉基共价有机聚合物（CoCOP），其用作氢气析出反应（HER）和氧气析出反应（OER）的双官能电催化剂。CoCOP具有较高的表面积，并在钴卟啉和C N基团之间具有强大的协同作用，从而具有高效的HER和OER性能。对于HER（达到1.0 mA cm ^-2的121 mV和达到10 mA cm ^-2的310 mV ）和OER（达到1.0 mA cm ^-2的166 mV），CoCOP都需要相对较低的过电势并在碱性介质中以350 mV达到10 mA cm ^-2）。这项工作可能为设计具有优异结构和高电催化性能的非贵金属基配位聚合物提供新思路。