Brza Mohamad A, Aziz Shujahadeen B, Anuar Hazleen, Alshehri Saad M, Ali Fathilah, Ahamad Tansir, Hadi Jihad M
Department of Manufacturing and Materials Engineering, Faculty of Engineering, International Islamic University of Malaysia, Kuala Lumpur, Gombak 53100, Malaysia.
Advanced Polymeric Materials Research Lab., Department of Physics, College of Science, University of Sulaimani, Qlyasan Street, Sulaimani 46001, Iraq.
Membranes (Basel). 2021 Apr 20;11(4):296. doi: 10.3390/membranes11040296.
Poly (vinyl alcohol) (PVA)-based solid polymer electrolytes doped with ammonium thiocyanate (NHSCN) and glycerol were fabricated using a solution casting method. Lithium-based energy storage devices are not environmentally friendly materials, and they are toxic. Thus, proton-conducting materials were used in this work as they are harmless and are smaller than lithium. The interaction between PVA and the electrolyte elements was shown by FTIR analysis. The highest conductivity of 1.82 × 10 S cm was obtained by the highest-conducting plasticized system (PSP_2) at room temperature. The mobility, diffusion coefficient, and number density of anions and cations were found to increase with increasing glycerol. FESEM was used to investigate the influence of glycerol on film morphology. TNM showed that the cations and anions were the main charge carriers. LSV showed that the electrochemical stability window of the PSP_2 system was 1.99 V. The PSP_2 system was applied in the preparation of an electrical double layer capacitor device. The shape of the cyclic voltammetry (CV) curve was nearly rectangular with no Faradaic peaks. From the galvanostatic charge-discharge analysis, the power density, energy density, and specific capacitance values were nearly constant beyond the first cycle at 318.73 W/Kg, 2.06 Wh/Kg, and 18.30 F g, respectively, for 450 cycles.
采用溶液浇铸法制备了掺杂硫氰酸铵（NHSCN）和甘油的聚乙烯醇（PVA）基固体聚合物电解质。锂基储能器件不是环保材料，且具有毒性。因此，本工作中使用了质子传导材料，因为它们无害且比锂小。通过傅里叶变换红外光谱（FTIR）分析表明了PVA与电解质元素之间的相互作用。在室温下，最高导电增塑体系（PSP_2）获得了1.82×10 S cm的最高电导率。发现阴离子和阳离子的迁移率、扩散系数和数密度随甘油含量的增加而增加。使用场发射扫描电子显微镜（FESEM）研究甘油对薄膜形态的影响。热重-质谱联用（TNM）表明阳离子和阴离子是主要的电荷载流子。线性扫描伏安法（LSV）表明PSP_2体系的电化学稳定窗口为1.99 V。PSP_2体系应用于制备双电层电容器器件。循环伏安法（CV）曲线的形状几乎为矩形，没有法拉第峰。通过恒电流充放电分析，在450个循环中，除第一个循环外，功率密度、能量密度和比电容值分别在318.73 W/Kg、2.06 Wh/Kg和18.30 F g时几乎保持恒定。
