含功能化纳米黏土的聚合物复合电解质的电化学行为

Electrochemical behaviors of polymer composite electrolytes containing functionalized nanosize clays.

作者信息

Kim Seok, Park Soo-Jin

机构信息

Department of Chemical and Biochemical Engineering, Pusan National University, San 30, Jangjeon-dong, Geumjeong-gu, Busan 609-735, South Korea.

出版信息

J Nanosci Nanotechnol. 2010 Jan;10(1):325-8. doi: 10.1166/jnn.2010.1525.

DOI:10.1166/jnn.2010.1525

PMID:20352855

Abstract

Functionalized nanosize clay effect on the poly(ethylene oxide) (PEO)-based polymer composite electrolytes (PCE) were prepared and studied. In order to understand the effects of organic-functionalized montmorillonite (OMMT) on the ionic conductivity, microstructure and electrochemical property were investigated. XRD results revealed that the PCE containing MMT-20A showed interlayer spacing length, 2.55 nm, while the PCE containing Na-MMT showed the value, 1.16 nm. By changing the OMMT species, the interlayer spacings were controlled. The XRD and thermal analysis results indicated that the PCE showed the reduced crystallinity by introduction of OMMT fillers. PCE containing MMT-20A showed the triple higher conductivity, 6.1 x 10(-4) S/cm, than PCE containing Na-MMT. This indicated that the improved ion conductivity was dependent on the reduced crystallinity that was correlated with the d-spacing of MMT.

摘要

制备并研究了功能化纳米黏土对聚环氧乙烷（PEO）基聚合物复合电解质（PCE）的影响。为了了解有机功能化蒙脱土（OMMT）对离子电导率的影响，对其微观结构和电化学性能进行了研究。X射线衍射（XRD）结果表明，含MMT - 20A的PCE的层间距长度为2.55 nm，而含钠基蒙脱土（Na - MMT）的PCE的层间距长度为1.16 nm。通过改变OMMT种类，层间距得以控制。XRD和热分析结果表明，通过引入OMMT填料，PCE的结晶度降低。含MMT - 20A的PCE的电导率为6.1×10⁻⁴ S/cm，是含Na - MMT的PCE的三倍。这表明离子电导率的提高取决于与MMT的d间距相关的结晶度降低。