Assessment of Solid Polymer Electrolyte Films of PVA Doped with Different Compositions of Zinc Sulphide (ZnS) Systems | Chapter 6 | Recent Developments in Chemistry and Biochemistry Research Vol. 4

The present paper investigates solid polymer electrolyte films of PVA doped with different compositions of zinc sulphide (ZnS) systems. Polyvinyl alcohol (PVA) is well-known for its tremendous impact strength at low temperatures, especially its flexibility, good moldability, high strength, heat-stable and chemical resistance. Polyvinyl alcohol (PVA) based Zn²⁺ ion conducting solid polymer electrolyte was prepared using a solution-cast method. To study the structure, measurements were made using Fourier transform infrared analysis (FT-IR) and X-ray diffraction (XRD). To learn more about the material's optical characteristics, the 200–800 nm range optical absorption spectra were examined. The material's optical absorption edge, direct energy gap, and indirect energy gap were included in this data. The direct optical energy gap for pure PVA lies at 6.08 eV, while PVA doped with zinc sulphide ranges from 5.28 to 5.68 eV for the different compositions. It was evident that the energy gaps and band edge values transferred to lower energies on doping with ZnS up to a dopant concentration of 92 wt.% of PVA and 8 wt.% of ZnS. In order to learn more about the conductivity order and charge transport in these materials, the ionic conductivity and transference number of PVA polymer electrolytes were measured for this investigation. The charge transport in PVA polymer electrolyte was measured to be largely due to ions (t_ion=0.97), as indicated by the transference number. Increasing the ZnS concentration and the temperature were both found to raise the ionic conductivity. The discharge properties of solid-state battery cells made with this PVA polymer electrolyte were studied while operating under a constant load of 100 kW. The evaluated cell para- meters of the cell (Zn/92 PVA:08 ZnS)/(I2 + C + electrolyte)) offer a significant application for solid-state batteries. Hence, the analyzed properties of Zn²⁺ ions doped with PVA polymer electrolytes are highly acceptable and promising for battery applications.

 

Author (s) Details

R. Venugopal
Department of Physics, Govt. Degree College, Mahabubabad, Mahabubabad (Dist.)-506101, Telangana, India.

 

K. Sudhakar
Department of Physics, University College of Engineering(A), Osmania University, Hyderabad-506007, India.

 

N. Narsimlu

Department of Physics, University College of Engineering(A), Osmania University, Hyderabad-506007, India.

 

CH. Srinivas
Department of Physics, University College of Engineering(A), Osmania University, Hyderabad-506007, India.

 

Please see the book here:- https://doi.org/10.9734/bpi/rdcbr/v4/490

Nanocomposite Polymer Electrolyte Films for Electrochemical Device Applications | Chapter 1 | New Frontiers in Physical Science Research Vol. 2

 The solution cast approach was used to create solid polymer electrolyte film samples of hydroxypropyl methylcellulose (HPMC)/poly vinyl alcohol (PVA) blends embedded with 1%–4% (wt.%) of copper oxide (CuO) nanoparticles. At room temperature, an LCR metre (ZM2376) was used to measure the AC conductivity of the produced samples in the frequency range of 50 Hz to 1 MHz. For the plots of AC conductivity in the high frequency band, Jonscher's power law is valid. DC conductivity is calculated using the plateau region of ac conductivity graphs. The predicted conductivity value based on bulk resistance is found to be compatible with the acquired dc conductivity values. It may be inferred from looking at the complex electrical modulus that the specified polymer electrolytes show non-debye type conductivity relaxation.

Author(s) Details:

N. Sandhya Rani,
Department of Physics, Vidyavardhaka College of Engineering, Mysore-570 002, India.

Please see the link here: https://stm.bookpi.org/NFPSR-V2/article/view/8200