 This research has developed a new type of single-atom catalyst, SAC, which is more efficient than existing sacs for the oxygen-evolution reaction, OR. The sacs are made from nickel atoms bonded to oxygen sites on graphene-like carbon, resulting in a three-dimensional porous structure. This structure allows for better electro-catalytic activity and stability compared to other sacs. Furthermore, the catalysts exhibit excellent performance with a low over-potential of 224 mV at a current density of 10 mACM2, a taffel slope of 42 mDEC1, an oxygen production turnover frequency of 1.44 s1 at 300 mV, and a long-term durability without significant degradation even under extreme conditions. These results show that the bonding between single-nickel and oxygen sites can significantly improve the performance of the sacs. This article was authored by Yao Guangli, Zhong Shuiwu, Peng Feilu, and others. We are article.tv. Links in the description below.