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首页> 美国卫生研究院文献>Polymers >The Study of Plasticized Amorphous Biopolymer Blend Electrolytes Based on Polyvinyl Alcohol (PVA): Chitosan with High Ion Conductivity for Energy Storage Electrical Double-Layer Capacitors (EDLC) Device Application
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The Study of Plasticized Amorphous Biopolymer Blend Electrolytes Based on Polyvinyl Alcohol (PVA): Chitosan with High Ion Conductivity for Energy Storage Electrical Double-Layer Capacitors (EDLC) Device Application

机译：基于聚乙烯醇（PVA）的增塑无定形生物聚合物混合电解质的研究：壳聚糖具有高离子传导性的储能双层电容（EDLC）装置应用

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In this study, plasticized films of polyvinyl alcohol (PVA): chitosan (CS) based electrolyte impregnated with ammonium thiocyanate (NH4SCN) were successfully prepared using a solution-casting technique. The structural features of the electrolyte films were investigated through the X-ray diffraction (XRD) pattern. The enrichment of the amorphous phase with increasing glycerol concentration was confirmed by observing broad humps. The electrical impedance spectroscopy (EIS) portrays the improvement of ionic conductivity from 10−5 S/cm to 10−3 S/cm upon the addition of plasticizer. The electrolytes incorporated with 28 wt.% and 42 wt.% of glycerol were observed to be mainly ionic conductor as the ionic transference number measurement (TNM) was found to be 0.97 and 0.989, respectively. The linear sweep voltammetry (LSV) investigation indicates that the maximum conducting sample is stable up to 2 V. An electrolyte with the highest conductivity was used to make an energy storage electrical double-layer capacitor (EDLC) device. The cyclic voltammetry (CV) plot depicts no distinguishable peaks in the polarization curve, which means no redox reaction has occurred at the electrode/electrolyte interface. The fabricated EDLC displays the initial specific capacitance, equivalent series resistance, energy density, and power density of 35.5 F/g, 65 Ω, 4.9 Wh/kg, and 399 W/kg, respectively.
机译：在该研究中，使用溶液浇铸技术成功地制备了浸渍有硫氰酸铵（NH4SCN）的基于氯氰酸（CS）的电解质的塑化薄膜。通过X射线衍射（XRD）图案研究了电解质膜的结构特征。通过观察宽驼峰证实了随着甘油浓度的增加，无定形相的富集。电阻抗光谱（EIS）在加入增塑剂时描绘了从10-5 s / cm到10-3 s / cm的离子电导率的改善。掺入28重量％和42重量％的电解质。观察到甘油的％，主要是离子导体，因为离子转移数测量（TNM）分别为0.97和0.989。线性扫描伏安法（LSV）研究表明，最大导电样品稳定至2V。采用最高导电率的电解质制造储能电双层电容器（EDLC）装置。循环伏安法（CV）图描绘了偏振曲线中没有可区分的峰，这意味着在电极/电解质界面处没有发生氧化还原反应。制造的EDLC分别显示出初始特定电容，等效串联电阻，能量密度和35.5F / g，65Ω，4.9WH / kg和399 w / kg的功率密度。

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