Brza Mohamad, Aziz Shujahadeen B, Raza Saeed Salah, Hamsan Muhamad H, Majid Siti Rohana, Abdulwahid Rebar T, Kadir Mohd F Z, Abdullah Ranjdar M
Manufacturing and Materials Engineering Department, Faculty of Engineering, International Islamic University of Malaysia, Kuala Lumpur 50603, Malaysia.
Hameed Majid Advanced Polymeric Materials Research Laboratory, Physics Department, College of Science, University of Sulaimani, Qlyasan Street, Sulaimani 46001, Iraq.
Membranes (Basel). 2020 Nov 30;10(12):381. doi: 10.3390/membranes10120381.
Plasticized lithium-ion-based-conducting polymer blend electrolytes based on poly(vinyl alcohol) (PVA):chitosan (CS) polymer was prepared using a solution cast technique. The conductivity of the polymer electrolyte system was found to be 8.457 × 10 S/cm, a critical factor for electrochemical device applications. It is indicated that the number density (), diffusion coefficient (), and mobility () of ions are increased with the concentration of glycerol. High values of dielectric constant and dielectric loss were observed at low frequency region. A correlation was found between the dielectric constant and DC conductivity. The achieved transference number of ions (t) and electrons (t) for the highest conducting plasticized sample were determined to be 0.989 and 0.011, respectively. The electrochemical stability for the highest conducting sample was 1.94 V, indicated by linear sweep voltammetry (LSV). The cyclic voltammetry (CV) response displayed no redox reaction peaks through its entire potential range. Through the constructing electric double-layer capacitor, the energy storage capacity of the highest conducting sample was investigated. All decisive parameters of the EDLC were determined. At the first cycle, the specific capacitance, internal resistance, energy density, and power density were found to be 130 F/g, 80 Ω, 14.5 Wh/kg, and 1100 W/kg, respectively.
采用溶液浇铸技术制备了基于聚（乙烯醇）（PVA）：壳聚糖（CS）聚合物的增塑锂离子导电聚合物共混电解质。发现该聚合物电解质体系的电导率为8.457×10 S/cm，这是电化学器件应用的一个关键因素。结果表明，离子的数密度（）、扩散系数（）和迁移率（）随甘油浓度的增加而增大。在低频区域观察到较高的介电常数和介电损耗值。发现介电常数与直流电导率之间存在相关性。对于导电性最高的增塑样品，测得的离子迁移数（t）和电子迁移数（t）分别为0.989和0.011。通过线性扫描伏安法（LSV）表明，导电性最高的样品的电化学稳定性为1.94 V。循环伏安法（CV）响应在其整个电位范围内均未显示氧化还原反应峰。通过构建双电层电容器研究了导电性最高的样品的储能容量。确定了EDLC的所有决定性参数。在第一个循环中，比电容、内阻、能量密度和功率密度分别为130 F/g、80 Ω、14.5 Wh/kg和1100 W/kg。
