Konjac glucomannan biopolymer as a multifunctional binder to build a solid permeable interface on Na₃V₂(PO₄)₃/C cathodes for high-performance sodium ion batteries

Abstract

Cathode materials for sodium ion batteries are unstable due to oxidation by electrolyte solution at high voltage. Developing novel solid permeable interfaces as passivation layers is critical to avoid side reactions and increase cycling durability.