循环伏安法
介电谱
材料科学
电解质
傅里叶变换红外光谱
分析化学(期刊)
水平扫描速率
线性扫描伏安法
聚合物
电容
离子电导率
电化学
化学工程
化学
电极
色谱法
复合材料
物理化学
工程类
作者
Shujahadeen B. Aziz,Elham M. A. Dannoun,Ary R. Murad,Khaled H. Mahmoud,Mohamad A. Brza,Muaffaq M. Nofal,Khaled A. Elsayed,Sozan N. Abdullah,Jihad M. Hadi,M. F. Z. Kadir
标识
DOI:10.1016/j.aej.2021.11.020
摘要
Solid polymer electrolytes containing methylcellulose:dextran (MC-DEX), ammonium hexafluorophosphate (NH4PF6), and glycerol have been prepared via the solution cast method. Various techniques have been used to characterize the prepared electrolyte samples. Fourier transform infrared spectroscopy (FTIR) analysis revealed the interaction between polymers and electrolyte components. According to the electrical impedance spectroscopy (EIS), the highest conducting plasticized system achieves a conductivity of 6.71 × 10-4 S cm−1 at ambient temperature. The mobility, number density, and diffusion coefficient of ions were measured using both FTIR and EIS methods, and it was found that their values rise as the amount of glycerol increases. Polarization due to ion migration is responsible for the high value of dielectric parameters. According to transference number measurement (TNM), the transport ion (tion) is 0.92, verifying that the ions are the primary charge carriers. The electrochemical stability window of the maximum conducting plasticized system is 1.58 V, based on linear sweep voltammetry (LSV) analysis. The electrical double-layer capacitor (EDLC) device is fabricated using the highest conducting plasticized system. The cyclic voltammetry (CV) curve is roughly rectangular in shape and with no presence of Faradaic peaks with its specific capacitance of 32.69F/g at 10 mV/s.
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