Electrochemical behavior of α-Keggin-type nanoparticles, Co(en)3(PMo12O40), in polyethylene glycol

被引：3

作者：

Zhao, F ^{[1
]}

Bi, LH ^{[1
]}

Jiang, JG ^{[1
]}

Qi, L ^{[1
]}

Wang, MK ^{[1
]}

Dong, SJ ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2003年 / 7卷 / 06期

关键词：

diffusion coefficient; polyoxometalates; poly(ethylene glycol); nanoparticles; microelectrode;

D O I：

10.1007/s10008-002-0332-1

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrochemical behavior of alpha-Keggin-type nanoparticles, Co(en)(3)(PMo12O40) (abbreviated as PMo12-Co), have been studied in poly(ethylene glycol) for four different molecular weights (PEG, average MW 400, 600, 1000, and 2000 g mol(-1)) and containing LiClO4 (O/Li=100/1) supporting electrolyte. The diffusion coefficients of the PMo12-Co nanoparticles were determined using a microelectrode by chronoamperometry for PEG of different molecular weights that were used to describe the diffusion behavior of PMo12-Co nanoparticles in different phase states. Moreover, the conductivity of the composite system increases upon addition of PMo12-Co nanoparticles, which was measured by an a.c. impedance technique. FT-IR spectra and DSC were used to follow the interactions of PEG-LiClO4-PMo12-Co, and well described the reason that the PMo12-Co nanoparticles could promote the conductivity of the PEG-LiClO4-PMo12-Co system.

引用

页码：337 / 343

页数：7

共 39 条

[1] Electroactive probe diffusion through DMF/polyacrylonitrile gels: free volume behaviour [J].