C. Bandaranayake, Y. Jayathilake, K. Vidanapathirana, K. Perera
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引用次数: 5
摘要
固态氧化还原电容器因其快速的能量输送、短的充电时间、高功率密度和延长的耐用性等特性而受到极大的关注。由于没有液体电解质，它们没有泄漏和不安全的缺点。本研究报道了由聚吡啶(PPy):十二烷基苯磺酸盐(DBS)电极和聚偏氟乙烯(PVdF)、碳酸乙烯(EC)、碳酸丙烯(PC)和硫氰酸钠(NaSCN)为基料的凝胶聚合物电解质(GPE)组成的氧化还原电容器的制备和表征。组成为0.4 PVdF: 1 EC: 1 PC: 0.075 NaSCN(重量计)的GPE的最大电导率为2.25× 10 -3 S cm -1。采用循环伏安法、电化学阻抗法和恒流充放电试验对氧化还原电容器进行了表征。它们的能量密度约为0.25 W h kg -1，平均功率密度为4 kW kg -1。
Performance of A Sodium Thiocyanate Based Gel Polymer Electrolyte In Redox Capacitors
Solid state redox capacitors have received a tremendous interest in terms of several characteristics such as their fast energy delivery, short charging time, high power density and extended durability. Due to the absence of a liquid electrolyte, they are free from drawbacks of leakage and unsafe. In this study, preparation and characterization of a redox capacitor consisting with two identical polypyrrole (PPy): dodecylbenzenesulfonate (DBS) electrodes and a gel polymer electrolyte (GPE) based on polyvinylidene fluoride (PVdF), ethylene carbonate (EC), propylene carbonate (PC) and sodium thiocyanate (NaSCN) is reported. The GPE having the composition, 0.4 PVdF: 1 EC: 1 PC: 0.075 NaSCN (by weight) showed the maximum conductivity of 2.25× 10 -3 S cm -1 . Redox capacitors were characterized using Cyclic Voltammetry, Electrochemical Impedance Spectroscopy and Galvanostatic Charge Discharge test. They exhibited an energy density about 0.25 W h kg -1 and an average power density of 4 kW kg -1 .
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