Deformable and flexible electrospun nanofiber-supported cross-linked gel polymer electrolyte membranes for high safety lithium-ion batteries

Abstract

A deformable and flexible cross-linked composite gel polymer electrolyte (CGPE) membrane, blended with an ionic liquid (IL) diluent, was successfully prepared for lithium-ion batteries. Herein, a cross-linked composite gel polymer electrolyte membrane in the presence of an IL resulted in the formation of a solid-like, elastic gel directly within the poly(vinylidene fluoride-co-hexafluoropropylene) electrospun skeleton via in situ UV-induced cross-linking of poly(ethylene glycol)methyl ether methacrylate (PEGMA), pentaerythritol tetraacrylate, and PEGMA monomers. The CGPE membrane exhibited significantly improved film flexibility and prevented liquid leakage while maintaining some advantageous features such as good liquid retention, high ionic conductivity, and good thermal stability. Moreover, the CGPE-3 exhibited the best performance, with a wide electrochemical potential window of up to 5.0 V vs. Li + /Li and a high ionic conductivity of 1.7 Â 10 À3 S cm À1. The Li/CGPE/LiFePO 4 cells with CGPE-3 exhibited stable electrochemical performance and yielded specific capacities of 160, 150, 136, 122, and 91 mA h g À1 at 0.1, 0.2, 0.5, 1.0, and 2.0C rates, respectively; moreover, they retained their properties well after 100 cycles for each rate. These solid-like gel polymer electrolyte membranes with excellent properties represent a very promising material for high-performance lithium-ion batteries with improved safety and reliability.

Highly‐Cyclable Room‐Temperature Phosphorene Polymer Electrolyte Composites for Li Metal Batteries

“…V vs. Li/Li + , which is ascribed to the electrolysis of remainder of trace trapped humidity in the system [64,65] . This wide ESW allows efficient charge transfer without limiting the cell voltage which allows delivering higher specific energy densities [66][67][68] .…”

Electrospun Poly(ethylene Terephthalate)/Silk Fibroin Composite for Filtration Application

“…Electrospun products have already been studied for many applications such as wound healing [ 12 , 13 ], tissue engineering [ 14 , 15 ], drug-releasing and drug target delivery systems [ 16 , 17 ], sensors [ 18 , 19 ], membranes [ 20 , 21 ], batteries [ 22 , 23 ], solar cells [ 24 , 25 ], catalysts [ 26 , 27 ], protecting clothing [ 28 , 29 ], separation [ 30 ], decommissioning [ 31 ], and environmental remediation [ 32 ]. However, the randomly arranged ultrafine fibers in the electrospun membranes, the high surface area to volume ratios, nano-porosity, good mechanical properties, and vapor permeability of such membranes pre-destined them for filtration membranes and especially for personal protection as face masks against very fine dirt and bacteria, but also viruses with dimensions of about 100 nm [ 33 , 34 , 35 , 36 ].…”

Integrated System of Solar Cells with Hierarchical NiCo2O4 Battery-Supercapacitor Hybrid Devices for Self-Driving Light-Emitting Diodes

“…Currently, electrochemical energy storage devices cover batteries and supercapacitors primarily [6][7][8][9][10][11][12]. Batteries are really a big family, including conventional lead-acid [13,14], nickel-cadmium [15,16], nickel-metal hydride [17][18][19], and lithium-ion batteries [20][21][22][23][24][25], as well as newly developed batteries such as lithium-sulfur [26][27][28], lithium-air [29][30][31], lithium-CO 2 [32][33][34], sodium/potassium/magnesium/aluminum/zinc ion [35][36][37][38][39][40][41][42][43][44], and aqueous metal ion batteries [45,46]. However, the batteries are unsuitable as energy storage devices in the frequently charge and discharge area, such as solar energy, wind energy, and tidal energy, due to the shortcomings of low cycling performance (usually in the order of hundreds of times) [47,48].…”