We chose to show model accuracy for one product from each group of products listed in Fig. This deviation between the mass transport-microkinetic model and the microkinetic model is likely attributed to the increased electrochemical activity at higher voltages, which cannot be adequately represented by quadratic polynomial approximations. Higher polynomial responses can be used to increase accuracy of the model. However, there is a risk of running into computational errors and non-convergence as a result of the combinations of partial differential equations (PDEs) used to solve the model and the higher degree polynomial (quartic or quintic approximations) for the species current density from the microkinetic model.