fig6

Figure 6. Galvanostatic cycling of two NMC-811||Li-Cu cells with QSPE-2 and QSPE-3 as electrolyte, coupled with EIS analysis. Galvanostatic cycling was performed at room temperature, in the voltage range between 3.0 and 4.3 V, and at constant C-rate of C/10 (with one initial cycle at C/20). The cathode active material loading was ~13 mg cm^-2. EIS spectra were collected at the end of discharge, every 5 cycles. (A) Specific discharge capacity (left axis) and coulombic efficiency (right axis); (B) selected EIS spectra of the cell with QSPE-2. Dots represent experimental curves and dashed lines of the fitting curves; (C) selected EIS spectra with QSPE-3. Dots represent the experimental curves and dashed lines of the fitting curves; (D-F) evolution of the (D) high-frequency, (E) middle-frequency, and (F) low-frequency resistance components upon cycling.