Investigation of the effect of mechanical pressure on the performance of negative lead accumulator electrodes during PSoC operation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F12%3APU94282" target="_blank" >RIV/00216305:26220/12:PU94282 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Investigation of the effect of mechanical pressure on the performance of negative lead accumulator electrodes during PSoC 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.cm-2 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

Název v anglickém jazyce

Investigation of the effect of mechanical pressure on the performance of negative lead accumulator electrodes during PSoC 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.cm-2 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

Druh

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

CEP obor

CG - Elektrochemie

OECD FORD obor

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Projekt

<a href="/cs/project/ED0014%2F01%2F01" target="_blank" >ED0014/01/01: Centrum výzkumu a využití obnovitelných zdrojů energie</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

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

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Svazek periodika

1

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

37-44

Kód UT WoS článku

000302666800007

EID výsledku v databázi Scopus

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