Electrical and morphological analysis of chitosan:AgTf solid electrolyte
Electrical and morphological analysis of chitosan:AgTf solid electrolyte
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DOI：
10.1016/j.matchemphys.2013.12.029
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发表时间：
2014-04-15
影响因子：
4.6
通讯作者：
Abidin, Zul Hazrin Z.
中科院分区：
文献类型：
--
作者：
Aziz, Shujahadeen B.;Abidin, Zul Hazrin Z.
采用溶液流延技术，以壳聚糖（主体聚合物）和三氟甲磺酸银（AgCF3SO3，掺杂盐）为基础，使用（1%）乙酸作为常用溶剂制备固体聚合物电解质薄膜。分析了盐浓度对 EP 和散装材料介电性能的影响。从物理上解释了体介电常数和直流电导率之间的原始关系。结果表明，由于银离子的减少，介电常数和介电损耗值在较高温度下降低。扫描电子显微镜 (SEM) 和 X 射线能量色散分析 (EDAX) 表明存在金属银颗粒。交流电导率谱显示出三个不同的区域，并在高频区域遵循 Jonscher 幂律。频率指数 (s) 的温度依赖性显示了从 CBH 模型到 SP 模型的交叉。 (C) 2013 Elsevier B.V. 保留所有权利。
Solution cast technique is employed to prepare solid polymer electrolyte films based on chitosan (host polymer) and silver triflate (AgCF3SO3, doping salt) using (1%) acetic acid as a common solvent. The effect of salt concentration on both EP and bulk materials dielectric properties has been analyzed. Physically the original relationship between the bulk dielectric constant and DC conductivity has been interpreted. It is demonstrated that the dielectric constant and dielectric loss values decrease at higher temperatures due to the reduction of silver ions. Scanning electron microscopy (SEM) and energy dispersive analysis of X-ray (EDAX) indicate the presence of metallic silver particles. The ac conductivity spectra shows three distinct regions and obeys the Jonscher's power law at high frequency regions. The temperature dependence of frequency exponent (s) shows the crossover from CBH model to SP model. (C) 2013 Elsevier B.V. All rights reserved.