Polymer electrolyte membrane based on PVA/LiClO4 nanocomposite reinforced cellulose nanocrystalline from corncob for lithium‐ion battery

Abstract In the field of high‐energy‐density lithium‐ion battery applications, Polymer electrolyte membranes (PEMs) have garnered significant attention due to their favorable mechanical properties and compatibility with lithium metal anodes. However, their relatively lower ionic conductivity compared to liquid electrolytes, making this problem a challenge for further research. In this study, we present a new approach to overcome these limitations, resulting in PEMs that exhibit exceptional ionic conductivity, flexibility, and interface stability. This achievement was realized by blending polyvinyl alcohol (PVA)/LiClO 4 composite reinforced cellulose nanocrystalline (CNC), which is sourced from well and carefully isolated corncob cellulose. PEMs show remarkable improvements regarding ionic conductivity and mechanical strength. Membrane transparency decreased with increasing CNC addition. The maximum improvement mechanical strength was observed with the addition of 5% CNC, namely elongation at break (strain) increased by 15%. At the same composition shows an increase in ionic conductivity to 1.31 × 10 −4 S/cm. This study provides the potential of precise material design and composition optimization in overcoming drawbacks associated with conventional PEMs. The findings not only advance the current understanding but also provide a promising avenue for the development of high‐performance PEMs, which are critical for the evolution of future energy storage technologies.