In-situ UV cured acrylonitrile grafted epoxidized natural rubber (ACN-g-ENR)-LiTFSI solid polymer electrolytes for lithium-ion rechargeable batteries
Document Type
Article
Publication Date
7-1-2021
Abstract
Solid polymer electrolytes (SPEs) of newly synthesized acrylonitrile grafted epoxidized natural rubber (ACN-gENR) were successfully prepared with lithium bis(trifluoromethanesulfonyl)imide salt (LiTFSI) via UV curing technique. The highest ionic conductivity of the SPEs was accomplished at 40 wt% LiTFSI with conductivity value of 1.1 x 10-6 S cm- 1 at room temperature. Further analysis indicates that the ion transport of the SPEs follows the VTF model. Chronoamperometry study estimated low lithium ions contribution to overall ionic conductivity (ca. 3%). A persuasive value of 2.7 V was obtained from the electrochemical stability. It is suitable to be applied in lithium-ion rechargeable batteries. An additional investigation by infrared (FTIR) spectroscopy revealed the polymer salt complexation occurred between Li+ of dopant salt with the ether group (C-O-C) oxygen of the epoxy ring. The inclusion of LiTFSI salts was decreased crystallinity, nevertheless, the glass transition temperature (Tg) and thermal stability, as well as the dynamic mechanical properties of the polymer electrolytes were enhanced. All in all, the initial electrochemical characteristics showed a promising potential of ACN-g-ENR host polymeric electrolyte to be used in lithium-ion storage energy applications.
Keywords
Battery, Energy storage, Epoxidized natural rubber, Radical polymerization, Solid polymer electrolyte
Divisions
physics
Funders
UniversitiKebangsaan Malaysia (UKM) [UKMGUP2019073]
Publication Title
Reactive and Functional Polymers
Volume
164
Publisher
Elsevier
Publisher Location
RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS