Reliability of electrochemical noise measurements

Results of round-robin testing on electrochemical noise

Rik-Wouter Bosch, Robert A. Cottis, Kinga Csecs, Thomas Dorsch, Lucia Dunbar, Andreas Heyn, François Huet, Outi Hyökyvirta, Zsolt Kerner, Alena Kobzova, Jan Macák, Radek Novotny, Johan Öijerholm, Juha Piippo, Roy Richner, Stefan Ritter, José Sánchez-Amaya, András Somogyi, Saija Väisänen, Wenzhong Zhang

Research output: Contribution to journalArticleScientificpeer-review

21 Citations (Scopus)

Abstract

Sixteen laboratories have performed electrochemical noise (EN) measurements based on two systems. The first uses a series of dummy cells consisting of a "star" arrangement of resistors in order to validate the EN measurement equipment and determine its baseline noise performance, while the second system, based on a previous round-robin in the literature, examines the corrosion of aluminium in three environments. All participants used the same measurement protocol and the data reporting and analysis were performed with automatic procedures to avoid errors. The measurement instruments used in the various laboratories include commercial general-purpose potentiostats and custom-built EN systems. The measurements on dummy cells have demonstrated that few systems are capable of achieving instrument noise levels comparable to the thermal noise of the resistors, because of its low level. However, it is of greater concern that some of the instruments exhibited significant artefacts in the measured data, mostly because of the absence of anti-aliasing filters in the equipment or because the way it is used. The measurements on the aluminium samples involve a much higher source noise level during pitting corrosion, and most (though not all) instruments were able to make reliable measurements. However, during passivation, the low level of noise could be measured by very few systems. The round-robin testing has clearly shown that improvements are necessary in the choice of EN measurement equipment and settings and in the way to validate EN data measured. The results emphasise the need to validate measurement systems by using dummy cells and the need to check systematically that the noise of the electrochemical cell to be measured is significantly higher than the instrument noise measured with dummy cells of similar impedance.
Original languageEnglish
Pages (from-to)379-389
JournalElectrochimica Acta
Volume120
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

Fingerprint

Testing
Aluminum
Acoustic noise
Resistors
Anti-aliasing
Corrosion
Thermal noise
Acoustic impedance
Electrochemical cells
Pitting
Passivation
Stars

Keywords

  • electrochimical noise
  • round-robin
  • corrosion

Cite this

Bosch, Rik-Wouter ; Cottis, Robert A. ; Csecs, Kinga ; Dorsch, Thomas ; Dunbar, Lucia ; Heyn, Andreas ; Huet, François ; Hyökyvirta, Outi ; Kerner, Zsolt ; Kobzova, Alena ; Macák, Jan ; Novotny, Radek ; Öijerholm, Johan ; Piippo, Juha ; Richner, Roy ; Ritter, Stefan ; Sánchez-Amaya, José ; Somogyi, András ; Väisänen, Saija ; Zhang, Wenzhong. / Reliability of electrochemical noise measurements : Results of round-robin testing on electrochemical noise. In: Electrochimica Acta. 2014 ; Vol. 120. pp. 379-389.
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Bosch, R-W, Cottis, RA, Csecs, K, Dorsch, T, Dunbar, L, Heyn, A, Huet, F, Hyökyvirta, O, Kerner, Z, Kobzova, A, Macák, J, Novotny, R, Öijerholm, J, Piippo, J, Richner, R, Ritter, S, Sánchez-Amaya, J, Somogyi, A, Väisänen, S & Zhang, W 2014, 'Reliability of electrochemical noise measurements: Results of round-robin testing on electrochemical noise', Electrochimica Acta, vol. 120, pp. 379-389. https://doi.org/10.1016/j.electacta.2013.12.093

Reliability of electrochemical noise measurements : Results of round-robin testing on electrochemical noise. / Bosch, Rik-Wouter; Cottis, Robert A.; Csecs, Kinga; Dorsch, Thomas; Dunbar, Lucia; Heyn, Andreas; Huet, François; Hyökyvirta, Outi; Kerner, Zsolt; Kobzova, Alena; Macák, Jan; Novotny, Radek; Öijerholm, Johan; Piippo, Juha; Richner, Roy; Ritter, Stefan; Sánchez-Amaya, José; Somogyi, András; Väisänen, Saija; Zhang, Wenzhong.

In: Electrochimica Acta, Vol. 120, 2014, p. 379-389.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Reliability of electrochemical noise measurements

T2 - Results of round-robin testing on electrochemical noise

AU - Bosch, Rik-Wouter

AU - Cottis, Robert A.

AU - Csecs, Kinga

AU - Dorsch, Thomas

AU - Dunbar, Lucia

AU - Heyn, Andreas

AU - Huet, François

AU - Hyökyvirta, Outi

AU - Kerner, Zsolt

AU - Kobzova, Alena

AU - Macák, Jan

AU - Novotny, Radek

AU - Öijerholm, Johan

AU - Piippo, Juha

AU - Richner, Roy

AU - Ritter, Stefan

AU - Sánchez-Amaya, José

AU - Somogyi, András

AU - Väisänen, Saija

AU - Zhang, Wenzhong

N1 - Project code: 77488

PY - 2014

Y1 - 2014

N2 - Sixteen laboratories have performed electrochemical noise (EN) measurements based on two systems. The first uses a series of dummy cells consisting of a "star" arrangement of resistors in order to validate the EN measurement equipment and determine its baseline noise performance, while the second system, based on a previous round-robin in the literature, examines the corrosion of aluminium in three environments. All participants used the same measurement protocol and the data reporting and analysis were performed with automatic procedures to avoid errors. The measurement instruments used in the various laboratories include commercial general-purpose potentiostats and custom-built EN systems. The measurements on dummy cells have demonstrated that few systems are capable of achieving instrument noise levels comparable to the thermal noise of the resistors, because of its low level. However, it is of greater concern that some of the instruments exhibited significant artefacts in the measured data, mostly because of the absence of anti-aliasing filters in the equipment or because the way it is used. The measurements on the aluminium samples involve a much higher source noise level during pitting corrosion, and most (though not all) instruments were able to make reliable measurements. However, during passivation, the low level of noise could be measured by very few systems. The round-robin testing has clearly shown that improvements are necessary in the choice of EN measurement equipment and settings and in the way to validate EN data measured. The results emphasise the need to validate measurement systems by using dummy cells and the need to check systematically that the noise of the electrochemical cell to be measured is significantly higher than the instrument noise measured with dummy cells of similar impedance.

AB - Sixteen laboratories have performed electrochemical noise (EN) measurements based on two systems. The first uses a series of dummy cells consisting of a "star" arrangement of resistors in order to validate the EN measurement equipment and determine its baseline noise performance, while the second system, based on a previous round-robin in the literature, examines the corrosion of aluminium in three environments. All participants used the same measurement protocol and the data reporting and analysis were performed with automatic procedures to avoid errors. The measurement instruments used in the various laboratories include commercial general-purpose potentiostats and custom-built EN systems. The measurements on dummy cells have demonstrated that few systems are capable of achieving instrument noise levels comparable to the thermal noise of the resistors, because of its low level. However, it is of greater concern that some of the instruments exhibited significant artefacts in the measured data, mostly because of the absence of anti-aliasing filters in the equipment or because the way it is used. The measurements on the aluminium samples involve a much higher source noise level during pitting corrosion, and most (though not all) instruments were able to make reliable measurements. However, during passivation, the low level of noise could be measured by very few systems. The round-robin testing has clearly shown that improvements are necessary in the choice of EN measurement equipment and settings and in the way to validate EN data measured. The results emphasise the need to validate measurement systems by using dummy cells and the need to check systematically that the noise of the electrochemical cell to be measured is significantly higher than the instrument noise measured with dummy cells of similar impedance.

KW - electrochimical noise

KW - round-robin

KW - corrosion

U2 - 10.1016/j.electacta.2013.12.093

DO - 10.1016/j.electacta.2013.12.093

M3 - Article

VL - 120

SP - 379

EP - 389

JO - Electrochimica Acta

JF - Electrochimica Acta

SN - 0013-4686

ER -