Given the high stability at anodic voltage observed from LSV tests, LMO||Li cells were explored using the crosslinked and non-crosslinked PCIL-SPEs. Figure illustrates the cycling performance of both the LMO|SPE10:1:1|Li and LMO|SPE10:1:1-CL|Li cells at 0.2C (0.1 mA cm -2 current density) in the voltage range of 3-4.3V vs. Li + /Li. The LMO|SPE10:1:1-CL|Li cell showed an initial discharge capacity of 91.4 mAh g -1 , maintaining 93% of its capacity after 50 cycles, whereas the LMO|SPE10:1:1|Li cell experienced 25% discharge capacity loss after the same number of cycles. Figure presents the corresponding charge-discharge profiles of the LMO|SPE10:1:1-CL|Li cell at different cycle numbers, showing stable and relatively small over potential throughout cycling. To evaluate the effect of crosslinking on fast charge/discharge capability, rate-capability tests were performed and compared across current densities from 0.05 to 1 mA cm -2 (shown in Figure ). The LMO|SPE10:1:1-CL|Li cell exhibited full capacity of 152 mAh g -1 at 0.1 mA cm -2 and a high capacity of 145 mAh g -1 at 0.1 mA cm -2 . The cell maintained 45% and 32% of its capacity at 1 mA cm -2 and 2 mA cm -2 (2C), respectively. Upon reducing the current density back to 0.1 mA cm -2 , the capacity was restored to 139 mAh g -1 . The voltage profiles of the LMO|SPE10:1:1-CL|Li cell at different C rate are given in Figure .