Department Of Physics

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Subject: search.filters.subject.Electrical Conductivity

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    Effect of Nano filler on PEO based polymer electrolytes for energy storage devices applications
    (Intergated Science, 2017) Sharma, P. K.; Sharma, A. K.; Sadiq, M.; Sharma, A. L.
    Ionically conducting solid polymer films have been utilized in many energy related sectors like high energy density solid polymer batteries, PEM fuel cells, and super capacitors, etc.In the present study, we report innovative study on the prepared high quality solid state free standing thin polymeric separator. In prepared free standing polymeric separator, polymer (PEO) has been used as host matrix; appropriate bulky anion salt (NaClO 4 ) as conducting species and nano ceramic filler (BaTiO 3 ) is used to enrich the mechanical and thermal stability of separator used for the device applications. The Fourier Transform Infra-Red (FTIR) result has been analysed properly of the prepared materials to look the microscopic interaction among polymer-ion, ion-ion and polymer-ion-filler interaction. Electrical conductivity results has been recorded using the impedance spectroscopy results which gives the estimated value of the order of ~10 Scm of the nano ceramic doped polymeric separator which is desirable for energy storage application. A fine correlation has been established between the electrical conductivity and FTIR results analysis
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    Electrical Conductivity and Ion Transport Number Analysis of Polymer Nanocomposite Films
    (The Research Publication, 2016) Sharma, Parul Kumar; Sharma, Anshu Kumar; Sadiq, M.; Sharma, A. L.
    Solid state free standing polymer nanocomposite films have been used in numerous vitality related segments like: high energy density solid polymer batteries, PEM fuel cells, super capacitors, etc. Such applications require a desirable conductivity value of the order of ~10-3 Scm-1at room temperature. A free standing transparent film of solid state polymer electrolyte based on PEO+ LiPF6 with different compositions of nano sized filler (BaTiO3) in weight percent (x = 0, 1, 2, 5, 10, 15, 20 ) is synthesized by using standard solution cast technique. Surface morphology of the prepared polymer composition is examined by field emission scanning electron microscopy (FESEM). I-V characteristics of the prepared sample have been characterized for the stability of electrochemical potential window. The transport number analysis of prepared sample has been done to separate out the contribution due to ions and electrons in the electrical conductivity results. The transference number has been estimated and found of the order of ~94%.