Development of Na+ ion conducting solid biopolymer electrolytes based on Na-CMC-SPA hydrogel

Solid polymer electrolytes based on biopolymers are green and environment-friendly materials. Here, solid biopolymer electrolyte (SBPE) hydrogel based on carboxymethyl cellulose is introduced for Na+ ion-based energy storage material. The synthesized SBPE material is biodegradable and shows excellent strength with good flexibility and high elasticity. SBPE-2 has compact packing with inner porous morphology which is helpful in ionic conduction inside the matrix. The ionic conductivity of electrolyte material was recorded in the range of 105 S/cm at room temperature and 10(-4) S/cm at higher temperatures (> 40 degrees C). The ionic transference number is found to be > 96% in 510 sec. LSV measurements confirm that the SBPEs material can be used in device fabrication up to 2.3 V. These properties of electrolytes make them a promising material for application in energy storage devices.

Automated summary

Solid polymer electrolytes based on biopolymers are green and environment-friendly materials with excellent strength, flexibility, and elasticity, suitable for energy storage devices.