The image-based models presented in this study are the first attempt to develop high-fidelity models on the realistic 3D electrode microstructure. This study highlights the effect of localised morphology on the performance and emphasises that it leads to localised variable discharge performance and the presence of heterogeneous DoD throughout the electrode. Hence, it can be concluded that localised morphology could be a potential cause of cell degradation and it should be further analysed, with the aid of image-based modelling, to direct optimised electrode microstructures for both performance and durability enhancements.