Publication result detail

Encountering Spurious Elements in Electrical Impedance Spectroscopy Data Fitting

VANÝSEK, P.

Original Title

Encountering Spurious Elements in Electrical Impedance Spectroscopy Data Fitting

English Title

Encountering Spurious Elements in Electrical Impedance Spectroscopy Data Fitting

Type

WoS Article

Original Abstract

The aim is to present situations in which collected impedance spectrum analysis data contain information that reflects not only the studied sample, but pertains also to the fundamental instrument properties or to the method in which the data is fitted or evaluated. Fitting of such data can lead to spurious, phantom elements in equivalent circuits and to frustration in data fitting. While illustrative experiments were done on specific instruments, the conclusions are generic and apply to any instrument with current supplying and potential probing inputs. The described spurious response stems from the existing unavoidable impedance of the reference inputs and from additional resistance, such as reference electrodes, connected to the inputs. Additionally is discussed a purely mathematical situation, when response artifacts are generated from correct impedance spectrum data, but incorrectly applied algebraic treatment.

English abstract

The aim is to present situations in which collected impedance spectrum analysis data contain information that reflects not only the studied sample, but pertains also to the fundamental instrument properties or to the method in which the data is fitted or evaluated. Fitting of such data can lead to spurious, phantom elements in equivalent circuits and to frustration in data fitting. While illustrative experiments were done on specific instruments, the conclusions are generic and apply to any instrument with current supplying and potential probing inputs. The described spurious response stems from the existing unavoidable impedance of the reference inputs and from additional resistance, such as reference electrodes, connected to the inputs. Additionally is discussed a purely mathematical situation, when response artifacts are generated from correct impedance spectrum data, but incorrectly applied algebraic treatment.

Keywords

impedance; artifact; frequency dependent permittivity; error

Key words in English

impedance; artifact; frequency dependent permittivity; error

Authors

VANÝSEK, P.

RIV year

2022

Released

27.10.2021

Publisher

The Electrochemical Society

ISBN

1945-7111

Periodical

JOURNAL OF THE ELECTROCHEMICAL SOCIETY

Volume

168

Number

10

State

United States of America

Pages from

1

Pages to

12

Pages count

12

URL

https://iopscience.iop.org/article/10.1149/1945-7111/ac2fc8

BibTex

@article{BUT172812,
  author="Petr {Vanýsek}",
  title="Encountering Spurious Elements in Electrical Impedance Spectroscopy Data Fitting",
  journal="JOURNAL OF THE ELECTROCHEMICAL SOCIETY",
  year="2021",
  volume="168",
  number="10",
  pages="1--12",
  doi="10.1149/1945-7111/ac2fc8",
  issn="0013-4651",
  url="https://iopscience.iop.org/article/10.1149/1945-7111/ac2fc8"
}

Documents

Vanýsek_2021_J._Electrochem._Soc._168_106512