Rapid and shape-controlled synthesis of "clean" star-like and concave Pd nanocrystallites and their high performance toward methanol oxidation

Uniform "clean" star-shaped and concave palladium (Pd) nanocrystallites (NCs) are first successfully synthesized via a very simple and rapid route without using any surfactants. Interestingly, the as-prepared Pd NCs manifest superior electrocatalytic activity and stability toward methanol oxidation over the commercial Pd/C catalyst.