Free-standing polydimethylsiloxane-based cross-linked network solid polymer electrolytes for future lithium ion battery applications. (1st June 2019)

• Record Type: Journal Article
• Authors: Grewal, Manjit Singh; Tanaka, Manabu; Kawakami, Hiroyoshi
• Is Part Of: Electrochimica acta. Volume 307(2019)
• Page Start: 148
• Page End: 156
• Publication Date: 2019-06-01
• Subjects: Cross-linked network polymer -- Polymer electrolyte -- Lithium ion batteries -- Polydimethylsiloxane -- Ionic conductivity; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2019.03.172
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: A series of cross-linked network solid polymer electrolytes based on dual end-functionalized polydimethylsiloxane bearing reactive thiol terminal groups with poly(ethylene glycol) diglycidyl ether and pentaerythritol tetrakis(3-mercaptopropionate) have been synthesized and characterized. The obtained results can be briefed as: ionic conductivity in the range of 1.5 × 10 −6 S cm −1 at room temperature to 1.6 × 10 −4 S cm −1 at 90 °C, lithium ion transference number ranged from 0.15 to 0.20, electrochemical window up to 5.3 V ( vs. Li + /Li), thermal resistance ( T d5 ca. 254.5 °C), and tensile strength ( ca. 1.6 MPa at max.). The interplay taking place between structure and physico-electrochemical properties of in these systems based on merits of poly(ethylene glycol) moieties as high solvation matrix for Li + ions flexible along with smooth solid support from polydimethylsiloxane allow the tailoring of the design of polymer electrolytes for future all-solid-state lithium batteries. Graphical abstract: Image 1 Highlights: Network solid polymer electrolytes based on polydimethylsiloxane were fabricated. Polydimethylsiloxane usage enhanced ionic conductivity of the electrolytes. Mechanical and thermal properties were improved by the network structures. The solid electrolytes showed favorable electrochemical properties for batteries.