Interestingly, we also see a clear trend that the fraction of nitrate ions paired in the Stern layer is less than the fraction in the bulk region at all applied potentials, suggesting that the presence of the polarizable metal interface suppresses the formation of ion pairs.
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Beyond Interfacial Structure: Ion Transport Mediates Cation Effects in Electrochemical Nitrate Reduction.
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The sentences
Our interfacial simulations reveal that while the double-layer structure is dependent on cation identity, the free energy of nitrate physisorption to the cathode lacks a strong trend with the cation identity.