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Intermittent discharging of nickel–metal hydride secondary battery

Intermittent discharging of nickel–metal hydride secondary battery A nickel–metal hydride secondary battery is discharged intermittently through a switch of 30 s on/30 s off mode via an external load R r. The discharge current i g is measured during switch-on and an open-circuit voltage V oc during switch-off. In the course of discharge run, i g drops at some time by depletion of an active material within the positive electrode. The pulse shapes of i g and V oc in each on/off duration are featureless before the i g drop, satisfying the relation V oc=i g(R i+R r) (R i being the internal resistance of a battery). After the i g drop, they become time dependent; yet, the above relation still holds. It is found that V oc changes continuously through the onset times of switch-on and -off. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ionics Springer Journals

Intermittent discharging of nickel–metal hydride secondary battery

Ionics , Volume 12 (3) – Jul 25, 2006

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References (8)

Publisher
Springer Journals
Copyright
Copyright © 2006 by Springer-Verlag
Subject
Chemistry; Electrochemistry; Renewable and Green Energy; Optical and Electronic Materials; Condensed Matter Physics; Energy Storage
ISSN
0947-7047
eISSN
1862-0760
DOI
10.1007/s11581-006-0033-3
Publisher site
See Article on Publisher Site

Abstract

A nickel–metal hydride secondary battery is discharged intermittently through a switch of 30 s on/30 s off mode via an external load R r. The discharge current i g is measured during switch-on and an open-circuit voltage V oc during switch-off. In the course of discharge run, i g drops at some time by depletion of an active material within the positive electrode. The pulse shapes of i g and V oc in each on/off duration are featureless before the i g drop, satisfying the relation V oc=i g(R i+R r) (R i being the internal resistance of a battery). After the i g drop, they become time dependent; yet, the above relation still holds. It is found that V oc changes continuously through the onset times of switch-on and -off.

Journal

IonicsSpringer Journals

Published: Jul 25, 2006

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