Preparation and characterization of Jatropha oil-based Polyurethane as non-aqueous solid polymer electrolyte for electrochemical devices

Abstract

Jatropha-oil based polyurethane is one of the initiative for replacing conventional petroleum based polyurethane. The vegetable oil-based polyurethane is more cost-effective and synthesize from renewable resources. Polyurethane was synthesized through prepolymerization method between jatropha oil-based polyol and diphenylmethane 4, 4'diisocyanate, (MDI) in inert condition. Then, lithium perchloride ion (LiClO 4) was added to the polyurethane system to form electrolyte film via solution casting technique. The polymer electrolytes were prepared by varying the amount of LiClO 4 ion 10 wt.% to 30 wt. %. The highest conductivity is achieved at 25 wt.% of LiClO 4 salt content, which is 1.29 × 10 −4 S/cm at room temperature 30 °C. The FTIR results showed the shifting of carbonyl group (C O) (1750 cm −1-1730 cm −1), ether and ester group (C-O-C) (1300 cm −1-1000 cm −1) and amine functional groups (N-H) (1650 cm −1-1500 cm −1) in polyurethane electrolytes from the blank polyurethane shows that oxygen and nitrogen atom acts as electron donor in the electrolytes system. It also confirmed that the intermolecular reaction had occurred in the electrolytes system. While, the XRD analysis showed the semi-crystalline properties of polyurethane have been reduced to amorphous phase upon the increasing addition of lithium ion. SEM results revealed the morphology analysis of the polyurethane electrolytes. There is homogenous and smooth surface in polyurethane and the dissociation of salt was observed after the addition of salt indicates there was interaction between salt and the polymer host.

Flexible, high-voltage, ion-conducting composite membranes with 3D aramid nanofiber frameworks for stable all-solid-state lithium metal batteries

“…We have also proven the much lower ionic conductivity of the ANF (i.e., PPTA)-LiTFSI electrolyte (9.2×10 −8 S cm −1 at 30°C, Fig. S7), consistent with other reports on the rigid amidebenzene backbone-based polymer electrolytes [76][77][78].…”

Synthesis and Characterization of Biodegradable Jatropha Oil Based Polyurethanes Using Modified Sesame Oil as Cross-Linker Containing Different NCO Groups with Improved Thermal Stability

“…From thermogram, five different weight loss were identified and the values are listed in Table-1. The comparative studies of PU-1 to PU-3 hard segment relatively increases, depending on diisocyanate linkage between polyol [5]. This is due to the intermolecular attraction between amine and carbonyl groups of the polymeric chain in it.…”

“…Synthesis of 9-methoxy-octadec-9-ene-1,10-diol: S-diol was prepared according to the reported procedure [4,5]. Firstly, 100 mL of THF was added to LiBH 4 in a 1000 mL three-neck flask at 0 °C.…”

Bio-Based Polymer Electrolytes for Electrochemical Devices: Insight into the Ionic Conductivity Performance

“…For the polymer electrolyte purpose, palm oil, jatropha oil, and castor oil have been used as the raw material to prepare polyurethane (PU). Figure 14 shows the reaction of a vegetable oil-based polyol with the isocyanate group to produce polyurethane [50]. PU with lithium iodide (LiI) and sodium iodide (NaI) salt from 0-40 wt% salt concentration.…”