Modified TiO2-SiO2 ceramic filler for a composite gel polymer electrolytes working with LiMn2O4

Abstract

A new type of ceramic filler (TiO 2 -SiO 2 ) was used in composite gel polymer electrolytes for application in lithium-ion batteries (LiMn 2 O 4 |Li). TiO 2 -SiO 2 ceramic powders were obtained by co-precipitation from solutions of titanium sulphate and sodium silicate. The resulting submicronsize powders were used as fillers in composite gel polymer electrolytes for Li-ion batteries based on polyacrylonitrile (PAN) membranes and sulpholane (TMS). The composite gel polymer electrolytes (PE) were analysed structurally and electrochemically, demonstrating favourable properties in terms of electrolyte uptake and electrochemical characteristics in Li-ion cells. The surface morphology of the PE was studied using scanning electron microscopy (SEM). It was found to be a stable, porous and flexible polymer electrolyte with an ionic conductivity of 9.8×10 −4 S cm −1 at 25°C. The performance of the LiMn 2 O 4 |PE3|Li cell was tested using electrochemical impedance spectroscopy (EIS) and galvanostatic charge/discharge. The LiMn 2 O 4 cathode exhibited good cyclability and coulombic efficiency (ca. 145 mAh g −1 after 50 cycles) when used together with 1 M LiPF 6 in PAN/TMS/TiO 2 -SiO 2 + 8 wt.% VC.

Effect of lithium bis(trifluoromethylsulfonyl)imide salt-doped UV-cured glycidyl methacrylate

“…Solid polymer electrolytes (SPEs) are electrolyte having a polymer as host matrix [1][2][3]. SPEs are free standing and dimensionally stable film and do not contain any solvent.…”

Activation of Passive Nanofillers in Composite Polymer Electrolyte for Higher Performance Lithium‐Ion Batteries

“…The SEM images of trilayer PP‐supported CGPE (before LiClO 4 +LiPF 6 solution bath) in Figure c,d show that the pore diameter decreased to the range of 390–520 nm. Commonly, the pore size is controlled by the choice of solvents or other evaporating additives in GPEs . The availability of submicrometer pore size structure of trilayer PP separator contributed to the change in pore size of the coated CGPE .…”

Nanohybrid electrolytes for high-energy lithium-ion batteries: recent advances and future challenges

“…The movement of Li + occurs in the amorphous region assisted by the segmental motion of the polymer chain. However, the highconcentration crystalline phase in PEO hinders the 5×10 −3 25 Poly(vinylidene fluoride-hexafluoro propylene) (PVDF-HFP)/SiO 2 (SBA-15) [5] 3.78×10 −3 10 20 PVDF-HFP/NH 4 BF 4 /dimethylacetamide (DMA)/nanosize fumed SiO 2 [6] 7.2×10 −3 3 Room temperature PP nonwoven/PVDF-HFP/fluorinated SiO 2 [7] 1.9×10 −3 50 Room temperature PVDF-HFP/CNTs [8] 4.88×10 −3 2.2 Room temperature PVDF-HFP/CaTiO 3 [9] 3.557×10 −3 5 Room temperature PVDF-HFP/Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 (LAGP) [10] 2.01×10 −3 5 2 7 PVDF-HFP/Li 1.5 Al 0.5 Ti 1.5 (PO 4 ) 3 (LATP) [11] 7.41×10 −4 5 2 0 PVDF-HFP/Si-Ti molecular sieve [12] 3.263×10 −3 10 Room temperature PVDF-HFP/poly(methyl methacrylate) (PMMA)/TiO 2 [13] 2.77×10 −3 15 25 PVDF-HFP/PMMA/TiO 2 [14] 2.49×10 −3 5 Room temperature PVDF-HFP/PMMA/TiO 2 [15] 3.4×10 −3 10 25 PAN/poly-(acrylonitrile-vinyl acetate) (PAV)/PMMA [16] 3.5×10 −3 30 PAN/methacrylate (MA)-functionalized SiO 2 [17] 1.8×10 −3 5 Room temperature PAN/sulpholane (TMS)/TiO 2 /SiO 2 [18] 9.8×10 −4 3 2 5 PAN/TMS/TiO 2 /SiO 2 [19] 9.8×10 −4 3 2 5…”