High-Performance Electrospun Poly(vinylidene fluoride)/Poly(propylene carbonate) Gel Polymer Electrolyte for Lithium-Ion Batteries

Abstract

A novel high-performance gel polymer electrolyte (GPE) based on an electrospun polymer membrane of poly(vinylidene fluoride)/ poly(propylene carbonate) (PVdF/PPC) was prepared and investigated for high-performance lithium-ion battery applications. This study presents a methodology for introducing PPC into PVdF-based GPEs designed for highperformance lithium-ion batteries. SEM images and porosity measurements showed that the electrospun membrane had a uniform and highly interconnected porous structure with an average fiber diameter of 300−850 nm. Such a morphology resulted in excellent electrolyte uptake amount (500 wt %) and retention in PVdF/PPC membrane. The DSC result indicated that the PVdF crystallinity was deteriorated by the incorporation of PPC. The PVdF/PPC electrospun membrane showed significantly higher ionic conductivity (4.05 mS•cm −1 ) than that of the PVdF electrospun membrane (2.11 mS•cm −1 ) at 30 °C. The PVdF/PPC GPE was stable at a potential higher than 5.2 V (versus Li + /Li). The capacity of Li/ CGE-20/LiFePO 4 was 160, 151, 133, 119, and 102 mAh g −1 at a charge/discharge rate of 0.1, 0.2, 0.5, 1, and 2 C, respectively.

Self-assembly synthesis of solid polymer electrolyte with carbonate terminated poly(ethylene glycol) matrix and its application for solid state lithium battery

“…Blending suitable additives such as ionic liquid [6] , graphene [13] , ceramic and polymeric nanoparticles [14][15][16][17][18][19] are also useful to increase ionic conductivity of PEG based PEs. Besides PEG based PEs, polycarbonate is another potential candidate [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] , and in comparison the carbonate group possesses high dielectric constant and does not chelate with lithium ion as tightly as the ethylene oxide unit in PEG [25] . Whereas polycarbonates are usually rigid with high T g and pure polycarbonates usually possess low ionic conductivity under room temperature [20,36] .…”

Electrospun Nanomaterials for Energy Applications: Recent Advances

“…Electrospinning is a viable route to simultaneously implement all these ameliorative strategies. Therefore, it has been increasingly and extensively utilized for the production of all the battery components-not only anodes [12,[56][57][58]72,74,81,82,[84][85][86][87][88][89][90][91] and cathodes [12,[92][93][94][95], but also electrolytes [12,[96][97][98] and separators [12,99,100], which makes it feasible to manufacture secondary batteries by assembling components produced exclusively by electrospinning ( Figure 5). Actually, the increasing number of published papers focused on this subject witnesses the growing interest of the scientific community for the use of this technique in the manufacturing of LIB components.…”

Carbon Dioxide–Derived Poly(propylene carbonate) as a Matrix for Composites and Nanocomposites: Performances and Applications

“…Consequently, PPC‐based polymer electrolyte could be considered as a promising candidate for lithium‐ion battery application . Similarly, electrospun PPC/poly(vinylidene fluoride) and PPC/sodium iodide gel polymer electrolytes were used for LIBs application …”