Abstract
B, N co-doped carbon-supported small-sized Ru nanoparticles (RuBCN) were constructed by a facile ion exchange strategy using closo-[B12H12]2- and Ru(bpy)32+ as the precursors. Benefitting from strong metal-support interactions caused by the synergistic coupling effect of co-dopants B and N, RuBCN exhibits improved sintering resistance and the Ru nanoparticles are stabilized at sub-3 nm at 900 °C. Besides, introducing B doping further increases the electron deficiency of Ru in RuBCN, which could weaken the interaction between Ru and Had species or O2 adsorption. As a result, it exhibits impressive HER (η10 = 20 mV) and ORR (E1/2 = 0.76 V) catalytic performances, as well as outstanding stability, which are much higher than those of the single dopant counterpart.
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