What is Hydrogenated Borophene via Potassium Borohydride Decomposition?

Hydrogenated borophene is a two-dimensional boron sheet whose surface is functionalized with hydrogen atoms, a modification that stabilizes the reactive borophene lattice while preserving its electronic properties. It can be synthesized by thermally decomposing potassium borohydride in a substrate-free environment, where potassium vapor generated during decomposition catalyzes growth of a continuous, crystalline hydrogenated boron layer.