Enhancement of β-phase crystallization and electrical properties of PVDF by impregnating ultra high diluted novel metal derived nanoparticles: prospect of use as a charge storage device

• Published in: Journal of materials science. Materials in electronics 2018-09, Vol.29 (17), p.14535-14545
• Main Authors: Mondal, D., Gayen, A. L., Paul, B. K., Bandyopadhyay, P., Bera, D., Bhar, D. S., Das, K., Nandy, P., Das, S.
• Format: Article
• Language: English
• Subjects: Batteries; Beta phase; Characterization and Evaluation of Materials; Chemistry and Materials Science; Crystallization; Dielectric properties; Dilution; Doping; Electrical properties; Electrical resistivity; Impregnation; Materials Science; Multilayers; Nanomaterials; Nanoparticles; Optical and Electronic Materials; Polymer matrix composites; Polymers; Storage; Vinylidene; Vinylidene fluoride
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-018-9588-9

Under certain conditions, ultra high diluted triturated material achieve nanodimension. This nanoparticle aspect of the materials has been used in various technical applications. The electrical properties of the polymer, Poly (vinylidene fluoride), commonly used as dielectric separator in high charge storage multilayer capacitor, get improved when doped with these triturated material. We have reported here how these effects get further increased by changing the doping concentration. With incorporation of 2 ml of triturated copper acetate salt, there are ~ 14.0, ~ 2.74, ~ 9.0 fold increment in β-phase, dielectric constant and ac conductivity respectively compared to the undoped polymer matrix. This is also associated with significant decrease (~ 66%) in tangent loss. Doping of these nanomaterials in the highly insulating matrix of the polymer is an effective way to fabricate composites with tunable dielectric behavior, making them a promising candidate in electronic industry. A device, using our material as separator have been designed and observed that the charge storing ability of the composite persists for more than 24 h. After 1 h of charging, maximum recorded voltage using our fabricated system is 2.034 V, whereas electrode separator system of commercial Li-polymer ion mobile battery can store 0.566 V.