 Non-precious metal single-atom catalysts, empensacs, with unique electronic structures and coordination environments have been gaining increasing attention due to their low-cost, high-atomic utilization, and high performance. These catalysts can be deposited onto carbon supports, empensacs slash CS, which offer a large surface area, excellent electrical conductivity, and high chemical stability. This review summarizes recent advancements in the development of these catalysts for various electrochemical reactions, such as CO2 reduction, H2O2 production, O2 reduction, and O reduction, and N2 reduction. The synthetic strategies, characterization techniques, and optimization of empensacs slash CS are discussed in detail. Additionally, the challenges and opportunities of this technology are outlined. This article was authored by Lu Li Xia, Ding Yang Yang, Zhu Linan, and others. We are article.tv. Links in the description below.