fig4

All-solid-state lithium batteries with NMC<sub>955</sub> cathodes: PVDF-free formulation with SBR and capacity recovery insights

Figure 4. Electrochemical characterization of a cell containing the 57% NMC955+ 38% Li6PS5Cl+3% C65+2% SBR cathode with active material Li0/Li6PS5Cl/NMC955. (A and B) PEIS and cyclic voltammetry analysis of the cell before the electrochemical cycling; (C) best electrochemical cycles for each C-rate; (D) cycles at C/10, C/5 and C; (E and F) Specific capacity vs. cycle number for charge and discharge, respectively, for the following C-rates: C/50, C/20, C/10, C/5, C/3, C/2, C, C/10, 2C, 3C, C/10, C/5, C/3, C/2, and C; (G and H) PEIS and cyclic voltammetry analysis of the cell after the electrochemical cycling. Cells tested at 25 C with no applied pressure; areal capacity of the cathode: 0.167 mAh.cm-2. Note: In E the lowest charging C-rate at CV varies from C/15 to C/76 for an average of C/46 and in F the lowest discharging average C-rate at CV is C/24. The maximum discharge capacity at C C-rate is > 120 mAh.g-1. SBR: Styrene-butadiene rubber; PEIS: potentiostatic electrochemical impedance spectroscopy; CV: constant voltage.

Energy Materials
ISSN 2770-5900 (Online)
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