Study of the conductivity of solid polymeric electrolyte based on PVA/GA blend with addition of acetic acid
Study of the conductivity of solid polymeric electrolyte based on PVA/GA blend with addition of acetic acid
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DOI：
10.1007/s10008-020-04605-2
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发表时间：
2020-05-20
影响因子：
2.5
通讯作者：
Avellaneda, Cesar O.
中科院分区：
文献类型：
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作者：
Cholant, Camila M.;Rodrigues, Marco P.;Avellaneda, Cesar O.
本研究研究了含聚乙烯醇（PVA）和阿拉伯胶（GA）的固体聚合物电解质（spe）在不同乙酸量下的离子传输行为和结构研究，以期在电化学器件中有可能的应用。采用铸造法制备了固相萃取体系，并采用电阻抗谱（EIS）、原子力显微镜（AFM）、x射线衍射（XRD）和傅里叶变换红外光谱（FTIR）对固相萃取体系进行了研究。在25℃和80℃条件下，PVA/GA的最佳离子电导率分别为2.22 × 10（-5）和17.70 × 10(-5) S.cm（-1）。FTIR分析证实了PVA， GA和乙酸- oh， - c =O和- coo -特征峰。通过XRD衍射图的反褶积分析，发现PVA/GA SPE的离子电导率受其离子输运性质和非晶性的影响。此外，AFM图像证明样品的表面主要是均匀的。
This study searches the ion transport behavior and structural investigation of solid polymer electrolytes (SPEs) containing poly(vinyl alcohol) (PVA) and gum arabic (GA) with diverse amount of acetic acid for a possible application in electrochemical devices. The SPE system was prepared by the casting method and studied by electrical impedance spectroscopy (EIS), atomic force microscopy (AFM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). The best ionic conductivities of 2.22 x 10(-5) and 17.70 x 10(-5) S.cm(-1) at 25 and 80 degrees C, respectively, were measured for PVA/GA with 42 wt% of acetic acid. FTIR analysis confirmed PVA, GA, and acetic acid -OH, -C=O, and -COO- characteristic peaks. The ionic conductivity of PVA/GA SPE was affected by its ionic transport properties and amorphousness, which was revealed by deconvolution of XRD diffractograms. Additionally, AFM images proved predominantly homogeneous surface of the samples.