Cu-Ru nanoalloys on carbon black for efficient production of hydrogen in neutral and alkaline conditions

• Key Words:ALLOY NANOPARTICLES; EVOLUTION; PHOTOREDUCTION; FE; CR
• Abstract:There is an increasing demand for efficient electrocatalysts for hydrogen evolution reaction (HER) in neutral solution. Herein, uniformly dispersed CuRu alloy nanoparticles on carbon black (CuRu/CB) are firstly synthesized for robust HER. Based on the combined benefits of improved intrinsic activity, increased site density, and enhanced charge transfer, the as-obtained CuRu/CB exhibits Pt-like catalysis activity in both neutral and alkaline solutions, with exchange current densities of 1.02 and 1.09 mA cm(-2) that are comparable to Pt/C of 1.32 and 1.44 mA cm(-2), respectively. For splitting water, CuRu/CB generates the current density of 10 mA cm(-2) at 91 and 85 mV in 1 M phosphate-buffered saline and 1 M KOH, respectively. (C) 2019 Elsevier B.V. All rights reserved.
• Volume:262
• Translation or Not:no