Fig. 8: Na|QSSE|NVP/C cell and safety properties. | Nature Communications

Fig. 8: Na|QSSE|NVP/C cell and safety properties.

From: Bioinspired design of Na-ion conduction channels in covalent organic frameworks for quasi-solid-state sodium batteries

Fig. 8

a XRD pattern of NVP/C. b SEM image of NVP/C. c Histograms of the voltage hysteresis under different specific currents (the error bar represents the standard deviation of the average voltage of charge/discharge near 50 mAh g−1). d Charge/discharge voltage profiles of the Na|TPDBD-CNa-QSSE|NVP/C and Na|TPBD-QSSE|NVP/C cells at 12 mA g−1. e CV curves of the Na|TPDBD-CNa-QSSE|NVP/C and Na|TPBD-QSSE|NVP/C cells at 0.1 mV s−1. f Combustion behaviors of the TPDBD-CNa-QSSE. g Combustion behaviors of the solvent-infiltrated fiberglass separator. h Long-cycle stability of the Na|TPDBD-CNa-QSSE|NVP/C cell at 60 mA g−1 (the inset shows a photo of ten 2.5 V LEDs). i Cycling performance of the Na|TPDBD-CNa-QSSE|NVP/C tiled pouch cell at 12 mA g−1 for 160 cycles. The inset photos show a LED powered by the QSSE pouch cell in different states of “Tiled”, “Folded 90°”, “Completely folded”, “Unfolded”, and “Cut”.

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