Electrochemical behavior of Mg electrode in sodium salt electrolyte system

Abstract

A suitable electrolyte is crucial to enhancing the electrochemical performance of magnesium (Mg) batteries. Here, the influence of Na2SiO3 on the electrochemical behavior of AZ31B Mg alloy in the Na2SO4-NaNO3 composite electrolyte was investigated. The results revealed that the activation potential of the AZ31B Mg alloy first represented a negative shift and then a positive shift with the increase in Na2SiO3. The most negative activation potential (−1.51 V) and the lowest polarization (−3.20 V) were found when 6 mM of Na2SiO3 was added; no discharge hysteresis was observed, and the polarization resistance value (R1) was 3,806 Ω. After 24 h immersion in the composite electrolyte with Na2SiO3, more and wider cracks appeared on the alloy surface, where a thick, dense film was formed, showing excellent discharge performance and corrosion resistance.

A dual function metal oxide interlayer as an oxygen-defect inhibitor and a gate-leakage suppressor for a hysteresis-free, solution-processed top-gated IGZO TFT

“…37 Consequently, magnesium (Mg) and aluminum (Al) with ionic radii of 72 pm and 53 pm, respectively, and more negative SEP values compared to IGZO metal ions of À2.36 and À1.66, respectively, were selected. 36,[38][39][40] Fig. S2 and S3, in the ESI, † depict the output curves for the Mg-and Al-engineered devices, respectively.…”