Assembled cells were stored in an inert atmosphere with the cathode side down (spacer up) for 24 h to ensure good wetting of the electrodes. The following cycling procedure was programmed in a Arbin battery cycler (LBT21084-5): formation charging at constant current C/10 a potential of 4.2 V which was kept until a current of less than C/20 was reached. Formation discharge was performed under a constant current of C/10; repetitive charging and discharging under these conditions was performed for three times before the standard CCCV cycling at 1C with the same cut-off voltage of 4.2 V and cutoffcurrent of C/20. A total of 200 CCCV cycles was performed with IR checks every 50 cycles. In the IR check step, a CV step with a C-rate of C/10 is performed until the cut-off voltage of 4.2 V is reached, which is again kept until C/20, after 30 minutes of resting a fast discharge with 2C is performed for 30 seconds, then, after 10 minutes of resting, a discharge with constant current C/10 is applied until cell voltage reaches 2.5 V.