The sluggish anodic oxygen evolution reaction (OER) greatly hinders the working efficiency of electrochemical water splitting to produce hydrogen, and it is therefore important to explore high-performance and cost-effective OER catalysts. In this communication, we report the synthesis of cobalt boride incorporated within porous carbon using a metal–organic framework (MOF) as a precursor. The high catalytic activity of Co–B and the high conductivity of carbon both contribute to the OER catalytic activity of Co–B/C. When used as an OER catalyst, this material shows high catalytic activity, delivering a current density of 10 mA cm^− 2 at a low overpotential of 320 mV, as well as outstanding long-term electrochemical durability. This finding is of fundamental and practical importance as it not only extends the application of MOFs, but also introduces a new method for synthesizing highly efficient OER electrocatalysts.

缓慢的阳极氧气析出反应（OER）极大地阻碍了电化学水分解产生氢气的工作效率，因此，开发高性能且具有成本效益的OER催化剂非常重要。在本交流中，我们报告了以金属-有机骨架（MOF）为前体，将硼化钴掺入多孔碳中的合成方法。Co–B的高催化活性和碳的高电导率都有助于Co–B / C的OER催化活性。当用作OER催化剂时，该材料显示出高催化活性，提供10 mA cm ^-2的电流密度在320 mV的低过电势下具有出色的长期电化学耐久性。这一发现具有重要的现实意义，因为它不仅扩展了MOF的应用范围，而且为合成高效OER电催化剂引入了一种新方法。