PREPARATION AND CHARACTERIZATION OF PVA BASED SOLID POLYMER ELECTROLYTES FOR ELECTROCHEMICAL CELL APPLICATIONS

作     者：Anji Reddy Polu Ranveer Kumar 

作者机构：Department of PhysicsK L UniversityGuntur 522502India Department of PhysicsDr. Hari Singh Gour University (A Central University)Sagar M.P. 470003India 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2013年第31卷第4期

页      面：641-648页

核心收录：

学科分类：081704[工学-应用化学] 0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

主　　题：Polymer electrolyte XRD DSC Ionic conductivity Electrochemical cell. 

摘      要：Solid polymer electrolyte films containing poly（vinyl alcohol） （PVA） and magnesium nitrate （Mg（NO3）2） were prepared by solution casting technique and characterized by using XRD, FTIR, DSC and AC impedance spectroscopic analysis. The amorphous nature of the polymer electrolyte films has been confirmed by XRD. The complex formation between PVA and Mg salt has been confirmed by FTIR. The glass transition temperature decreases with increasing the Mg salt concentration. The AC impedance studies are performed to evaluate the ionic conductivity of the polymer electrolyte films in the range of 303-383 K, and the temperature dependence seems to obey the Arrhenius behavior. Transport number measurements show that the charge transport is mainly due to ions. Electrochemical cell of configuration Mg/（PVA ＋ Mg（NO3）2） （70：30）/（12 ＋ C ＋ electrolyte） has been fabricated. The discharge characteristics of the cell were studied for a constant load of 100 kΩ.