Fig. 3: Interfacial properties of K-β”-Al2O3 as measured from symmetric K cells cycled at 20 °C. | Communications Materials

Fig. 3: Interfacial properties of K-β”-Al2O3 as measured from symmetric K cells cycled at 20 °C.

From: Solid-state inorganic electrolytes for next generation potassium batteries

Fig. 3

a Nyquist plot of symmetric K/K-β”-Al2O3/K cell after heat-treatment at different temperatures under Ar, b equivalent circuit model used for the determination of the interfacial resistance, c plot showing the modelled interfacial resistance against heat treatment temperature and d, e showing scanning electron microscopy (SEM) images and energy dispersive X-ray spectroscopy (EDX) mapping of K (turquoise) of the K/K-β”-Al2O3 interface after 25 cycles. Reproduced with permission from105.

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