Publication detail

Low frequency noise of electrochemical power sources

KUPAROWITZ, T. SEDLÁKOVÁ, V. SEDLÁK, P. ŠIKULA, J.

Original Title

Low frequency noise of electrochemical power sources

English Title

Low frequency noise of electrochemical power sources

Type

conference paper

Language

en

Original Abstract

Terminal voltage fluctuation of lithium-sulfur cells and nickel–metal-hydride cells was measured in different time intervals since cell charging to full capacity. The power noise spectral density is of 1/f^a type with exponent a varying in the range from 1 to 1.8. The main noise sources in charge storage systems are: i) fluctuation of potential barrier on the electrode-electrolyte interface (its height and width); ii) generation-recombination processes due to the chemical redox reactions, happening in the cell during its discharge. The state of health of each cell influences the noise spectral density shape and the rate of its decline. Further study of described behaviors may lead to development of reliable method for cell quality assessment.

English abstract

Terminal voltage fluctuation of lithium-sulfur cells and nickel–metal-hydride cells was measured in different time intervals since cell charging to full capacity. The power noise spectral density is of 1/f^a type with exponent a varying in the range from 1 to 1.8. The main noise sources in charge storage systems are: i) fluctuation of potential barrier on the electrode-electrolyte interface (its height and width); ii) generation-recombination processes due to the chemical redox reactions, happening in the cell during its discharge. The state of health of each cell influences the noise spectral density shape and the rate of its decline. Further study of described behaviors may lead to development of reliable method for cell quality assessment.

Keywords

Low frequency noise, 1/f noise, nickel-metal- hydride battery, lithium-sulfur battery, generation-recombination noise, battery state of health

Released

19.06.2017

Publisher

IEEE

Location

Vilnius, Lithuania

ISBN

978-1-5090-2760-6

Book

2017 International Conference on Noise and Fluctuations (ICNF)

Pages from

1

Pages to

4

Pages count

4

URL

BibTex


@inproceedings{BUT137504,
  author="Tomáš {Kuparowitz} and Vlasta {Sedláková} and Petr {Sedlák} and Josef {Šikula}",
  title="Low frequency noise of electrochemical power sources",
  annote="Terminal voltage fluctuation of lithium-sulfur cells and nickel–metal-hydride cells was measured in different time
intervals since cell charging to full capacity. The power noise spectral density is of 1/f^a type with exponent a varying in the range from 1 to 1.8. The main noise sources in charge storage systems are: i) fluctuation of potential barrier on the electrode-electrolyte interface (its height and width); ii) generation-recombination processes due to the chemical redox reactions, happening in the cell during its discharge. The state of health of each cell influences the noise spectral density shape and the rate of its decline. Further study of described behaviors may lead to development of reliable method for cell quality assessment.",
  address="IEEE",
  booktitle="2017 International Conference on Noise and Fluctuations (ICNF)",
  chapter="137504",
  doi="10.1109/ICNF.2017.7985993",
  howpublished="online",
  institution="IEEE",
  year="2017",
  month="june",
  pages="1--4",
  publisher="IEEE",
  type="conference paper"
}