Plasticized Sodium-Ion Conducting PVA Based Polymer Electrolyte for Electrochemical Energy Storage—EEC Modeling, Transport Properties, and Charge-Discharge Characteristics

Polymers

卷:13

ElhamM. A. Dannoun¹  M.H. Hamsan²  M.F. Z. Kadir²  HewaO. Ghareeb³  MuaffaqM. Nofal⁴  ShujahadeenB. Aziz⁵  RebarT. Abdulwahid⁵  RanjdarM. Abdullah⁵ 

[1]Associate Director of General Science Department, Woman Campus, Prince Sultan University, P. O. Box 66833, Riyadh 11586, Saudi Arabia

[2]|Centre for Foundation Studies in Science, University of Malaya, Kuala Lumpur 50603, Malaysia

[3]|Chemistry Department, College of Science, University of Sulaimani, Qlyasan Street, Sulaimani 46001, Iraq

[4]|Department of Mathematics and General Sciences, Prince Sultan University, P. O. Box 66833, Riyadh 11586, Saudi Arabia

[5]|Hameed Majid Advanced Polymeric Materials Research Lab., Physics Department, College of Science, University of Sulaimani, Qlyasan Street, Sulaimani 46001, Iraq

关键词: PVA;    NaI;    glycerol;    polymer electrolyte;    impedance;    ion transport parameters;   

DOI  :  10.3390/polym13050803

来源: DOAJ

【 摘 要 】

This report presents the preparation of plasticized sodium ion-conducting polymer electrolytes based on polyvinyl alcohol (PVA)via solution cast technique. The prepared plasticized polymer electrolytes were utilized in the device fabrication of electrical double-layer capacitors (EDLCs). On an assembly EDLC system, cyclic voltammetry (CV), electrical impedance spectroscopy (EIS), linear sweep voltammetry (LSV), transfer number measurement (TNM) and charge–discharging responses were performed. The influence of plasticization on polymer electrolytes was investigated in terms of electrochemical properties applying EIS and TNM. The EIS was fitted with electrical equivalent circuit (EEC) models and ion transport parameters were estimated with the highest conductivity of 1.17 × 10⁻³ S cm⁻¹ was recorded. The CV and charge-discharging responses were used to evaluate the capacitance and the equivalent series resistance (ESR), respectively. The ESR of the highest conductive sample was found to be 91.2 at the first cycle, with the decomposition voltage of 2.12 V. The TNM measurement has shown the dominancy of ions with t_ion = 0.982 for the highest conducting sample. The absence of redox peaks was proved via CV, indicating the charge storing process that comprised ion accumulation at the interfacial region. The fabricated EDLC device is stable for up to 400 cycles. At the first cycle, a high specific capacitance of 169 F/g, an energy density of 19 Wh/kg, and a power density of 600 W/kg were obtained.

【 授权许可】

Unknown