基于聚（乙烯醇）-聚（乙烯基吡咯烷酮）共混聚合物的镁离子传导的电化学研究

Investigation of Electrochemical Studies of Magnesium Ion Conducting Poly(vinyl alcohol)-Poly(vinyl pyrrolidone) Based Blend Polymers.

作者信息

Jeyabanu K, Siva V, Nallamuthu N, Selvanayagam S, Bahadur S Asath, Manikandan A

机构信息

International Research Centre, Department of Physics, Kalasalingam University, Krishnankoil 626126, India.

PG and Research, Department of Physics, Government Arts College, Melur 625106, India.

出版信息

J Nanosci Nanotechnol. 2018 Feb 1;18(2):1103-1109. doi: 10.1166/jnn.2018.13969.

DOI:10.1166/jnn.2018.13969

PMID:29448540

Abstract

Polymer blend electrolytes based on magnesium ion conducting PVA-PVP-MgCl2 polymer were prepared at different compositions by solution casting techniques. The prepared films were characterised by various techniques such as XRD and FTIR. Amorphous nature and structural coordination of polymer electrolyte were confirmed by X-ray diffraction and Fourier transform infrared spectroscopy studies. The ionic conductivity of the prepared polymer electrolytes were analysed through ac impedance spectroscopy. The highest conductivity was found to be in the order of ~10-6 Scm-1 at an ambient temperature for the composition of 50PVA:50PVP:5 wt% MgCl2. Conductivity versus temperature plot was found to follow an Arrhenius nature. The dielectric behaviour and ionic transport properties of the polymer electrolytes were also analyzed.

摘要

通过溶液浇铸技术，以镁离子传导性的聚乙烯醇-聚乙烯吡咯烷酮-氯化镁聚合物为基础，制备了不同组成的聚合物共混电解质。采用X射线衍射（XRD）和傅里叶变换红外光谱（FTIR）等多种技术对制备的薄膜进行了表征。通过X射线衍射和傅里叶变换红外光谱研究，证实了聚合物电解质的非晶性质和结构配位。通过交流阻抗谱分析了制备的聚合物电解质的离子电导率。对于50聚乙烯醇:50聚乙烯吡咯烷酮:5 wt%氯化镁的组成，在室温下发现最高电导率约为10-6 S/cm。电导率与温度的关系曲线呈现出阿仑尼乌斯特性。还分析了聚合物电解质的介电行为和离子传输性质。