Tailoring single atom materials for regulating metal anode deposition

High-energy-density battery systems based on metal anodes have garnered tremendous research interests, holding promising applications in power grid systems, portable electronics, and electric mobility. However, the road to applications of various metal anodes is inhibited by the uneven electrodeposition and dendrites growth. The emerging single atom materials (SAMs) with tunable electronic structure provide a way to precisely adjust the electrochemical nucleation process at the atomic level, allowing the possibility of perfect homogeneous deposition of metal anode. This review article initially summarizes the various synthesis strategies and structural characterization of SAMs. Furthermore, it focuses on a comprehensive review of tailoring SAMs with unique advantages for regulating the metal (Li, Na, Zn, et al.) anode electrodeposition, offering fundamental view of designing SAMs for high-energy metal anode-based batteries. Finally, the article outlines the challenges and future research prospects of SAMs in advanced battery system applications.