The irreversible adsorption at high-energy surface defects and the formation of the SEI are consistent with the lower electrochemical reversibility observed in the slope region compared to the plateau region for all HCs (Figure and). The capacity in the plateau region depends on the nanopore volume and distribution and interlayer spacing. Hence, the capacity in this region can be increased by optimizing the pore size distribution while maintaining an interlayer spacing that does not inhibit diffusion.