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001021442 005__ 20240712113144.0
001021442 0247_ $$2datacite_doi$$a10.34734/FZJ-2024-00738
001021442 037__ $$aFZJ-2024-00738
001021442 041__ $$aEnglish
001021442 1001_ $$0P:(DE-Juel1)180638$$aZhang, Yufan$$b0$$ufzj
001021442 1112_ $$aAnnual meeting of international society of electrochemistry$$cLyon$$d2023-09-03 - 2023-09-08$$gISE$$wFrance
001021442 245__ $$aCriterion for Finding the Optimal Electrocatalyst at any Overpotential
001021442 260__ $$c2023
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001021442 520__ $$aThe generic volcano plot is a widely employed practical tool to display and compare the activity of different electrocatalysts in dependence of a small number of descriptors. It is known that the apex of the volcano curve shifts with applied potential. [1] However, the trend of the potential-dependent shift of the volcano apex has remained unclear. Herein, we address this question for a two-step electrocatalytic reaction. [2] With the transfer coefficient assumed as 1/2, our analysis reveals that the adsorbate coverage at the volcano apex equals 1/2 regardless of potential. We present a criterion to predict the direction and magnitude of the apex shift as a function of the activation energies of the two steps. Thereafter, the criterion is extended to the oxygen reduction reaction. The influence of the transfer coefficient and the potential of zero charge on the volcano plot is revealed. Implications of the presented criterion for targeted design of electrocatalysts are discussed.
001021442 536__ $$0G:(DE-HGF)POF4-1231$$a1231 - Electrochemistry for Hydrogen (POF4-123)$$cPOF4-123$$fPOF IV$$x0
001021442 7001_ $$0P:(DE-Juel1)192568$$aHuang, Jun$$b1$$ufzj
001021442 7001_ $$0P:(DE-Juel1)178034$$aEikerling, Michael$$b2$$eCorresponding author$$ufzj
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001021442 9141_ $$y2023
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