The use of protic ionic liquids with cathodes for sodium-ion batteries

Abstract

Herein, we report for the first time the use of a protic ionic liquid as a component of a new Na-ion battery electrolyte. The protic ionic liquid has been tested in combination with two different types of sodium-ion cathode materials, polyanionic Na₃V₂(PO₄)₃ and layered Na_0.67Mn_0.89Mg_0.11O₂, in order to reveal its impact on the electrode material electrochemical performance. The results evidence that this novel electrolyte performs very well in combination with a polyanionic electrode material, while it shows poor performance with a layered oxide material.