Preparation and performance of gel polymer electrolyte based on electrospun polymer membrane and ionic liquid for lithium ion battery

Fabrication and properties of polybutadiene rubber-interpenetrating cross-linking poly(propylene carbonate) network as gel polymer electrolytes for lithium-ion battery

“…[1][2][3][4][5] However, studies on lithium ion batteries that use liquid electrolytes have been reported to raise the possibility of explosions because of the existence of highly ammable organic liquid electrolytes. [6][7][8][9] Polymer electrolytes provide an ideal way to solve the safe problem, because of their potential application as the electrolyte in all-solid-state rechargeable lithium batteries.…”

“…The gel polymer electrolytes (GPEs) exhibit a number of advantages, which include featuring the characteristics of both solid and liquid electrolytes, providing ionic transport at par with liquid electrolytes, being chemically compatible with electrode materials, showing acceptable ionic conductivity over a wide temperature range, possessing high thermal stability and exibility, as well as leak free in operation. [11][12][13][14] Host polymers used for GPE preparation include poly-(ethylene oxide) (PEO), 15,16 poly(vinylidene uo-ride) (PVdF), 17 poly(vinylidene uoride-co-hexaouropropylene) (P(VdF-HFP)), 18,19 poly(urethane) (PU), 20 poly-(acrylonitrile) (PAN), 21 and poly(methyl methacrylate) (PMMA). 22 However, the performances of these GPEs are still unsatisfactory.…”

High performance hybrid Al2O3/poly(vinyl alcohol-co-ethylene) nanofibrous membrane for lithium-ion battery separator

“…However, the huge pore size is unfavorable for separator to block any penetration of particles from electrodes. High porosity of separator can hold sufficient liquid electrolyte for the ionic conductivity between the electrodes, thus greatly affecting battery charge and discharge performance [19,20]. The porosity of the Al 2 O 3 @NFs/ PET/NFs separator is estimated to be 51.4 % according to Equation (1), which is slightly lower than that of NFs/PET/NFs separator (58 %), but much higher than that of commercial PP/PE/PP separator (35 %).…”

“…This result indicates that coating inorganic Al 2 O 3 layer on NFs/PET/NFs separator can greatly reduce the interfacial resistance from electrolyte and Li electrodes. The reason is that Al 2 O 3 nanoparticles and PVA-co-PE nanofibrous membrane possess high specific surface area, in favor of trapping trace amounts of impurities (such as HF, O 2 , H 2 O) and protecting Li metal electrode from corrosion, thus leading to a less resistive solid-electrolyte-interface (SEI) film on the electrode in the lithium-ion batteries [19,[29][30][31]. In the case of Al 2 O 3 @NFs/PET/ NFs separator, as the resistance for Li + ions migration in the interfacial layer is smaller, therefore lower interfacial resistance is yielded compared to that of NFs/PET/NFs and Al 2 O 3 @NFs/PET/NFs separator.…”

Physicochemical properties of poly(vinylidene fluoride-trifluoroethylene)/poly(ethylene oxide) blend membranes for lithium ion battery applications: Influence of poly(ethylene oxide) molecular weight

“…Different polymer blends have been prepared by solvent casting, electrospinning and hot-press techniques [37][38][39][40] aiming at improving the thermal, mechanical and electrical properties for lithium ion battery separators.…”