'Activated' polypyrrole electrodes for high-power supercapacitor applications

被引：80

作者：

Ingram, MD

Staesche, H

Ryder, KS

机构：

[1] Univ Aberdeen, Dept Chem, Aberdeen AB24 3UE, Scotland

[2] Univ Loughborough, Dept Chem, Loughborough, Leics, England

来源：

SOLID STATE IONICS | 2004年 / 169卷 / 1-4期

基金：

英国工程与自然科学研究理事会;

关键词：

electrochemical supercapacitors; polypyrrole; doping mechanisms; high power devices;

D O I：

10.1016/j.ssi.2002.12.003

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 [物理化学]; 081704 [应用化学];

摘要：

Several strategies are investigated for 'activating' polypyrrole electrodes for use in electrochemical supercapacitors. These include: the development of columnar morphologies by micellar deposition, self-doping by attachment of anions' and the use of aryl sulfonates to promote cross-linking and hydrophilicity. The key to improved performance, especially in this last example, is the apparent coupling of doping processes to structural relaxations that encourage solvent uptake by the polymer and ready access for dopant ions to all available sites. Thick (15-20 mum) films of polypyrrole activated in this way can be charged and discharged reversibly at scan rates up to 300 mV s(-1), indicating a possible use in high-power supercapacitors. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：51 / 57

页数：7

共 25 条

[1]

High-capacitance supercapacitor using a nanocomposite electrode of single-walled carbon nanotube and polypyrrole [J].