This relationship reveals that a clear trend of OH-M 2+δ bond energy strength (Ni < Co < Fe < Mn) is negatively correlated with the HER performance (Mn < Fe < Co < Ni), implying that the metal–OH bond strength is a primary factor governing activity enhancement.
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In Situ Probing of Electrochemical Hydrogen Evolution Reaction Intermediates: From Single-Crystal Models to Nano-Catalysts.
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