This could be the cause of the deviation in normalised capacities with C-rate in Subvolume 3; the overpotential at the global rate of C/10 (2.36 A m -2 which would be higher effective C-rate for this volume) is too great to obtain the 'full' capacity, whereas in all other subvolumes, the same capacity is achieved at all C-rates. This does not fully explain the trend in normalised capacity and electrochemical performance, however, as Subvolume 1 significantly outperforms the others.