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@INPROCEEDINGS{Zhang:1021442,
      author       = {Zhang, Yufan and Huang, Jun and Eikerling, Michael},
      title        = {{C}riterion for {F}inding the {O}ptimal {E}lectrocatalyst
                      at any {O}verpotential},
      reportid     = {FZJ-2024-00738},
      year         = {2023},
      abstract     = {The 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.},
      month         = {Sep},
      date          = {2023-09-03},
      organization  = {Annual meeting of international
                       society of electrochemistry, Lyon
                       (France), 3 Sep 2023 - 8 Sep 2023},
      subtyp        = {Other},
      cin          = {IEK-13},
      cid          = {I:(DE-Juel1)IEK-13-20190226},
      pnm          = {1231 - Electrochemistry for Hydrogen (POF4-123)},
      pid          = {G:(DE-HGF)POF4-1231},
      typ          = {PUB:(DE-HGF)24},
      doi          = {10.34734/FZJ-2024-00738},
      url          = {https://juser.fz-juelich.de/record/1021442},
}