Ni0.3Co2.7O4 spinel particles/polypyrrole composite electrode:: Study by X-ray photoelectron spectroscopy

被引：35

作者：

Gautier, JL

Marco, JF

Gracia, M

Gancedo, JR

Guadarrama, VD

Nguyen-Cong, H

Chartier, P

机构：

[1] Univ Santiago Chile, Fac Quim & Biol, Lab Eelctroquim, Dpto Quim Mat, Santiago 7254758, Chile

[2] CSIC, Inst Quim Fis Rocasolano, E-28006 Madrid, Spain

[3] Univ Strasbourg, UMR CNRS 7512, Fac Chim, Lab Electrochim & Chim Phys Crops Solide, F-67000 Strasbourg, France

来源：

ELECTROCHIMICA ACTA | 2002年 / 48卷 / 02期

关键词：

Ni-Co oxide; polypyrrole; composite electrode; oxygen electrocatalyst and spinel;

D O I：

10.1016/S0013-4686(02)00514-5

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In this work we have studied the multilayered polypyrrole/oxide composite electrode on glassy carbon having the structure GC/PPy/PPy(Ni0.3CO2O4)/PPy, in which the spinel oxide Ni0.3CO2.7O4 is known to be an electrocatalyst of the oxygen reduction reaction in alkaline medium. The successive GC/PPy, GC/PPy/PPy(Ni0.3Co2.7O4) and GC/PPy/PPy(Ni0.3CO2.7O4)/PPY parts of the electrode were examined by X-ray photoelectron spectroscopy. The results indicate that the electronic structure of the PPy is independent of the thickness of the PPy used to prepare the electrodes. The XPS data also show that cobalt is present in both divalent and trivalent states. The PPy doping degree by Cl- ions (in terms of the Cl-/N) and the oxide/PPy mass ratio observed by XPS were 19 and 4.5%, respectively. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：119 / 125

页数：7

共 29 条

[1] Electrocatalysis of O2 reduction at polyaniline plus molybdenum-doped ruthenium selenide composite electrodes [J].