Fig. 5: Study of temperature effect on SEI formation. | Nature Communications

Fig. 5: Study of temperature effect on SEI formation.

From: Regulating interfacial reaction through electrolyte chemistry enables gradient interphase for low-temperature zinc metal batteries

Fig. 5: Study of temperature effect on SEI formation.

a The electrochemical window of TMP–40 electrolyte measured using polarization scanning at 0.5 mV s−1 on non-active Ti electrodes under different temperatures. The corresponding amplification curves at b −0.5 to 0.5 V and c 1.7 to 3.0 V. SEM characterizations of d ZnF2–Zn3(PO4)2@Zn (−30 °C) and e ZnF2–Zn3(PO4)2@Zn (25 °C). f Electrochemical impedance spectra comparison between ZnF2–Zn3(PO4)2@Zn (25 °C) and ZnF2–Zn3(PO4)2@Zn (−30 °C) in symmetric cells at −30 °C. g Comparison of stability of Zn2+ deposition/stripping between ZnF2–Zn3(PO4)2@Zn||ZnF2–Zn3(PO4)2@Zn (25 °C) and ZnF2–Zn3(PO4)2@Zn||ZnF2–Zn3(PO4)2@Zn (−30 °C) at 25 °C under different current densities and discharge capacities.

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