Mondal, D and Gayen, A L and Paul, B K and Bhar, D S and Das, K and Nandy, P and Das, S (2019) Colossal Dielectric Response of PVDF-HFP Amalgamated Ultra-Low-Density Metal-Derived Nanoparticles: Frontier of an Excellent Charge Separator. Journal of Electronic Materials, 48 (9). pp. 5570-5580. ISSN 0361-5235

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As a high-dielectric separator, a wide variety of polymers like poly(vinylidene fluoride) (PVDF) and its co-polymer such as poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) are commonly employed due to having modifiable electrical properties with impregnating suitable dopants in the fabrication of a high-performance charge storage device. In this report, improvement of efficiency has been studied by tuning the doping concentration of triturated material like ultra-low-density copper sulphate (ULDCS) within PVDF-HFP matrix and found a massive increment in beta phase (beta%), dielectric constant (epsilon(r)) and ac conductivity (sigma(ac)) with similar to 2.3,similar to 56 and similar to 21 fold (at 100-Hz frequency), respectively, at a critical percentage of 10-ml doping compared to the pristine polymer matrix. One crucial factor like dielectric leakage has been taken into account intensely with reduction of similar to 2.6 times at 100-Hz frequency with respect to the pristine one to obtain excellent behaviour of the separator. These extremely desirable properties can make the sample a very promising candidate to be used as a high-dielectric separator of an extraordinary charge storage device. In this context, a super-charge storage device has been fabricated using our synthesized high-dielectric material as a separator, and the device performance is amplified to a greater extent. Generation of high potential up to 3.77V with high rate of retentivity (similar to 88.86%) is the key function of our device, and the efficiency of the device has also been verified by lighting up to 25 light-emitting diodes (LEDs) for 10min.

Item Type: Article
Subjects: Electronics
Depositing User: Bidhan Chaudhuri
Date Deposited: 15 Nov 2019 07:43
Last Modified: 15 Nov 2019 07:43

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