ELECTROCHEMICAL PROPERTIES OF POLYANILINE IN HIGHLY CONCENTRATED ACIDS

被引：7

作者：

KOGAN, YL

SHUNINA, IG

SAVCHENKO, VI

机构：

[1] Institute of Chemical Physics, U.S.S.R. Academy of Sciences

来源：

SYNTHETIC METALS | 1990年 / 37卷 / 1-3期

关键词：

D O I：

10.1016/0379-6779(90)90125-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An electrochemical pulse method for the synthesis of polyaniline thin films stable in concentrated sulfuric acid is suggested. Transition from diluted to concentrated 9 - 12 M sulfuric acid solutions is shown to result in an increase of the Ha/Hc peak ratio (equal to 3) and an extreme narrowing of the anode peak (up to 35 mV at half height). The data obtained have been interpreted as revealing a transition, characterized by the transfer coefficient α = 0.75 and the two-electron elementary stage, into a kinetic region. It was found that the polyaniline redox potential rises sharply at -Ho ≈ 5, which may probably be assigned to polymer dehydration in concentrated acids. © 1990.

引用

页码：63 / 68

页数：6