Publication detail

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.

Original Title

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

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

MECHANICAL PRESSURE, NEGATIVE ELECTRODES, LEAD ACID ACCUMULATOR

Authors

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

RIV year

2012

Released

1. 4. 2012

Publisher

ELSEVIER

Location

USA

ISBN

0378-7753

Periodical

Journal of Power Sources

Year of study

1

Number

1

State

Kingdom of the Netherlands

Pages from

37

Pages to

44

Pages count

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"
}