TiO2 nanoparticle dispersed porous gel polymer electrolyte membrane for room temperature Na-S battery. (2020)

• Record Type: Journal Article
• Authors: Verma, Harshlata; Mishra, Kuldeep; Rai, D.K.
• Is Part Of: Materials today. Volume 28:Part 1(2020)
• Page Start: 346
• Page End: 349
• Publication Date: 2020
• Subjects: Gel polymer electrolyte -- Sodium sulfur battery -- Conductivity -- Discharge capacity; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2020.02.585
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: Room temperature sodium-sulfur (Na-S) batteries are promising energy storage devices for meeting increasing energy demands. An electrolyte with reasonably high ionic conductivity (≥10 −4 S cm −1 ) is one of the key requirements for room temperature Na-S batteries. In this work, a sodium ion conducting flexible porous gel polymer electrolyte membrane of TiO2 (Titanium dioxide) dispersed Poly(vinylidene fluoride-hexafluoropropylene) soaked in a liquid electrolyte of NaPF6 (sodium hexafluorophosphate) in EC (ethylene carbonate): PC (Propylene carbonate) has been prepared. The electrolyte is obtained through phase inversion method and shows an ionic conductivity of 1.3 × 10 −3 S cm −1 . A proto-type Na-S battery has been fabricated and characterized using the prepared electrolyte membrane. The battery shows an open circuit voltage of ∼2.1 V and discharge capacity of 231 mA h g −1 . However, battery shows capacity fading during charge-discharge cycle.