Detail publikačního výsledku

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

MICKA, K.; KŘIVÍK, P.; BAČA, P.; TONAR, K.; TOŠER, P.

Originální název

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

Anglický název

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

Druh

Článek WoS

Originální abstrakt

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 6 N.cm-2. Their cycle life is comparable to that of the electrodes with expanders.

Anglický abstrakt

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 6 N.cm-2. Their cycle life is comparable to that of the electrodes with expanders.

Klíčová slova

MECHANICAL PRESSURE, NEGATIVE ELECTRODES, LEAD ACID ACCUMULATOR

Klíčová slova v angličtině

MECHANICAL PRESSURE, NEGATIVE ELECTRODES, LEAD ACID ACCUMULATOR

Autoři

MICKA, K.; KŘIVÍK, P.; BAČA, P.; TONAR, K.; TOŠER, P.

Rok RIV

2013

Vydáno

01.04.2012

Nakladatel

ELSEVIER

Místo

USA

ISSN

0378-7753

Periodikum

JOURNAL OF POWER SOURCES

Svazek

1

Číslo

1

Stát

Nizozemsko

Strany od

37

Strany do

44

Strany počet

8

BibTex

@article{BUT74117,
  author="Karel {Micka} and Petr {Křivík} and Petr {Bača} and Karel {Tonar} and Pavel {Tošer}",
  title="Investigation of the effect of mechanical pressure on the performance of negative lead accumulator electrodes during PSoC operation",
  journal="JOURNAL OF POWER SOURCES",
  year="2012",
  volume="1",
  number="1",
  pages="37--44",
  issn="0378-7753"
}