In this study, we adopt a detailed calibrated microkinetic model developed by Rihm et al., which accounts for all proposed reaction pathways and elementary steps in the CO2RR literature on Cu(100) surfaces. The calibrated model ensures consistency with thermodynamic calculations and experimental findings, while also aligning with the accuracy of ab initio calculations. We further discuss the microkinetic model in Section 2.5. We invite readers to read the work of Rihm et al. for details of the microkinetic model for CO2 reduction on Cu electrodes. For this work, we explore and develop a methodology for coupling mass transport and microkinetic models.