Plasticizer incorporated, novel eco-friendly bio-polymer based solid bio-membrane for electrochemical clean energy applications

摘要

High-molecular-weight, carbohydrate based Solid Biopolymer Electrolyte (SBE) pectin-lithium perchlorate [C6H10O7:LiClO4 = 60:40 molar mass percentage (m.m.%)] with ethylene carbonate (EC) as plasticizer has been prepared by simple solution casting technique. Addition of EC results in enhanced electrochemical window from 3.39 V to 3.55 V. The flexibility of the SBE is also improved which leads to attain an enriched ionic conductivity of 3.89 x 10(-4) Scm(-1) in the sample with optimum salt and plasticizer composition. The eco-friendly membrane with highest conductivity contributes good cycling properties and possesses higher value of cationic transference number when compared with other electrolyte samples. A lithium ion conducting battery constructed using the highly conducting polymer membrane sample is used to light up the red LED, display an Open Circuit Voltage (OCV) of 1.65 V. (C) 2018 Elsevier Ltd. All rights reserved.