The role of Li4Ti5O12 nanoparticles on enhancement the performance of PVDF/PVK blend for lithium-ion batteries

The effective role of Lithium Titanate (Li4Ti5O12) filled in Poly (vinylidene fluoride)/Poly (n-vinyl carbazole) (PVDF/PVK) (80/20 wt/wt%) blend matrix was demonstrated. PVDF/PVK/Li4Ti5O12 nanocomposite films with ratios 0.2, 0.5, 1.5, and 2.0 wt% of Li4Ti5O12 NPs have been successfully synthesized via casting technique. Structural, optical, and electrical properties of the prepared PVDF/PVK/Li4Ti5O12 films have been evaluated via several techniques such as; XRD, FTIR-ATR, UV–vis and A.C. conductivity. The XRD and FTIR-ATR results confirmed the interaction between the PVDF/PVK blend and Li4Ti5O12 NPs. Also, the increasing of ratios of lithium titanate NPs decreased the degree of crystallinity of PVDF/PVK blend. UV–vis data obtain that there are two new peaks at 348 nm and 380 nm and their intensities increase with increasing lithium titanate NPs. The behavior of dielectric constant and dielectric loss are progressively decreased as the frequency increased. The values of AC conductivity are increased as the ratios of Li4Ti5O12 NPs in the PVDF/PVK blend matrix increased. AC conductivity results of PVDF/PVK/Li4Ti5O12 blend confirm the ability of this nanocomposite in Rechargeable Batteries Applications.

Abstract licence: CC BY-NC

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