Fig. 1: Temperature-dependent conductivity of various K+ solid electrolytes together with EA of selected compounds. | Communications Materials

Fig. 1: Temperature-dependent conductivity of various K+ solid electrolytes together with EA of selected compounds.

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

Fig. 1

The data for K2Fe4O7 is obtained from single-crystal measurements. K-BASE denotes a sample consisting of 91 wt% K-β”-Al2O3, 8.4 wt% K-β-Al2O3, and 0.6 wt% ZrO2. K2Fe4O7 is included as the electrolyte with the currently best reported RT σion and EA, but those might be partially from H+ conduction as well as crystal water. The ionic conductivities are summarized from42,49,58,60,65,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104. Detailed references can be found in Table S2 (SI).

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