“…Two-dimensional (2D) materials used as anodes for NIBs and KIBs have received widespread interest owing to their high special surface area, plentiful active sites, and superior mechanical properties. Many 2D materials have been explored as anodes, and they offer outstanding electrochemical properties for NIBs and KIBs, such as carbon allotropes, 5–7 boron nitride allotropes, 8,9 phosphorene, 10–12 transition metal dichalcogenides (TMDs), 13,14 MXenes, 15,16 etc. Recently, a new family of 2D transition metal boride monolayers (MBenes) has been successfully synthesized by topochemical deintercalation of the A layer from the MAB phases (where M refers to a transition metal, A stands for group IIIA or IVA element, and B is boron) in NaOH or HCl solution.…”