Electrochemical efficiency in multiple discharge recharge cycling of supercapacitors in hybrid EV applications

被引：104

作者：

Pell, WG

Conway, BE

Adams, WA

de Oliveira, J

机构：

[1] Univ Ottawa, Dept Biol, Ottawa, ON K1N 6N5, Canada

[2] ESTCO, Nepean, ON, Canada

[3] IEAElect Hybrid Vehicle Operating Agcy Annex 5, Nepean, ON, Canada

来源：

JOURNAL OF POWER SOURCES | 1999年 / 80卷 / 1-2期

基金：

加拿大自然科学与工程研究理事会;

关键词：

supercapacitors; porous electrodes; hardware simulation;

D O I：

10.1016/S0378-7753(98)00257-2

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 ; 081704 ;

摘要：

The use of large capacitance supercapacitors in series or series/parallel configurations has been envisaged and evaluated as a basis for load-levelling, and hence performance enhancement, in electric vehicles (EV) powered primarily by rechargeable batteries or fuel-cells. In this paper, charge/discharge efficiency in duty-cycles of the supercapacitor component are examined in relation to distributed resistance in porous double-layer and redox-type devices which restricts efficiency of discharge and recharge cycling, especially at high rates. Results of quantitative experiments on the responses of a five-element RC model hardware equivalent-circuit and a gold brush electrode an presented. Potential-recovery after discharge and potential-decay after recharge, and potential changes following load variations, enable efficiencies of charge delivery and acceptance to be evaluated. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：134 / 141

页数：8

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