Interfacial water reorganization as a pH-dependent descriptor of the hydrogen evolution rate on platinum electrodes
作者： Isis Ledezma-Yanez , W. David Z. Wallace , Paula Sebastián-Pascual , Victor Climent , Juan M. Feliu
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摘要: Hydrogen evolution on platinum is a key reaction for electrocatalysis and sustainable energy storage, yet its pH-dependent kinetics are not fully understood. Here we present a detailed kinetic study of hydrogen adsorption and evolution on Pt (111) in a wide pH range. Electrochemical measurements show that hydrogen adsorption and hydrogen evolution are both slow in alkaline media, consistent with the observation of a shift in the rate-determining step for hydrogen evolution. Adding nickel to the Pt (111) surface lowers the barrier for …
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