Investigation of the effect of mechanical pressure on the performance of negative lead accumulator electrodes during partial state of charge operation

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F12%3A00376010" target="_blank" >RIV/61388955:_____/12:00376010 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.jpowsour.2012.01.151" target="_blank" >http://dx.doi.org/10.1016/j.jpowsour.2012.01.151</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jpowsour.2012.01.151" target="_blank" >10.1016/j.jpowsour.2012.01.151</a>

Result language

angličtina

Original language name

Investigation of the effect of mechanical pressure on the performance of negative lead accumulator electrodes during partial state of charge operation

Original language description

In the present work, our attention has been focused on the desired prevention of irreversible sulphation of negative test electrodes during cycling under simulated high-rate HEV duty. To this end, the negative active material was doped with carbon and, for comparison, with titanium dioxide as a nonconducting powdered additive, and the negative as well as positive electrodes were subjected to a defined pressure. Accelerated cycling revealed that electrodes doped with carbon in laboratory VRLA cells perform, in the first run, better than those doped with TiO2 since they reached about 30,000 cycles regardless of the applied pressure. However, the electrode performances were almost equalized in the second run. Mechanical pressure of 4 N cm2 has a pronounced favourable effect on the cycle life of negative electrodes with expanders. Higher pressures are not recommended. Electrodes doped with carbon but without standard expanders are capable of long-life cycling at elevated pressures around 6

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CG - Electrochemistry

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2012

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Power Sources

ISSN

0378-7753

e-ISSN

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Volume of the periodical

207

Issue of the periodical within the volume

JUN 1 2012

Country of publishing house

CH - SWITZERLAND

Number of pages

8

Pages from-to

37-44

UT code for WoS article

000302666800007

EID of the result in the Scopus database

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