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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CG - Elektrochemie

OECD FORD obor

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Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Journal of Power Sources

ISSN

0378-7753

e-ISSN

—

Svazek periodika

207

Číslo periodika v rámci svazku

JUN 1 2012

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

8

Strana od-do

37-44

Kód UT WoS článku

000302666800007

EID výsledku v databázi Scopus

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