Measurements of flicker noise in supercapacitor cells

Szewczyk, Arkadiusz; Lentka, Łukasz; Smulko, Janusz; Babuchowska, Paulina; Béguin, François

doi:10.1109/icnf.2017.7985985

Cited by 8 publications

(4 citation statements)

References 18 publications

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“…In another study of activated carbon (AC) for EDLC application, structural changes negatively affected ion transport, particularly together with decreasing electronic conductivity and an electrochemically active surface were observed as the main causes of performance degradation [ 19 ]. Measurements of electric flicker noise have been indicated as a possible method of detecting changes in interfacial behaviour in supercapacitor cells, supplementing capacitance and ESR data [ 20 ]. Dilatometric measurements may help to gather information about volume changes of materials and components in devices [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Ag(e)ing and Degradation of Supercapacitors: Causes, Mechanisms, Models and Countermeasures

Chen

Holze

2023

Molecules

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The most prominent and highly visible advantage attributed to supercapacitors of any type and application, beyond their most notable feature of high current capability, is their high stability in terms of lifetime, number of possible charge/discharge cycles or other stability-related properties. Unfortunately, actual devices show more or less pronounced deterioration of performance parameters during time and use. Causes for this in the material and component levels, as well as on the device level, have only been addressed and discussed infrequently in published reports. The present review attempts a complete coverage on these levels; it adds in modelling approaches and provides suggestions for slowing down ag(e)ing and degradation.

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Section: Introductionmentioning

confidence: 99%

Ag(e)ing and Degradation of Supercapacitors: Causes, Mechanisms, Models and Countermeasures

Chen

Holze

2023

Molecules

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“…Noise in the range of low frequency can also be used as an indicator of the quality of capacitors [28] and supercapacitors [29,30]. The phenomena associated with the accumulation of charges in the supercapacitor, occurring at the at the electrode/electrolyte interface, are random processes.…”

Section: Introductionmentioning

confidence: 99%

Methods of Assessing Degradation of Supercapacitors by Using Various Measurement Techniques

et al. 2019

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This article presents the qualitative analyses of the construction of supercapacitor samples. The analyses are based on the suggested thermographic measurements as well as the technique of testing the inherent noise of the investigated element. The indicated assessment methods have been referred to the currently used parameters for the qualitative evaluation of supercapacitors. The approach described in this paper, which introduces additional parameters assessing worn out of supercapacitors, can be included in the so-called non-invasive measurement methods, which allow the assessment of the condition of the sample under test. This article presents the applied measurement stands and verifies of the applicability of measurement methods in relation to the currently used parameters allowing for the qualitative assessment of supercapacitors. The measurement method presented in this article was used to study prototypes of supercapacitors. The measurement results allow for more accurate characterization of the observed element. Conducted tests revealed, at the same time, that one of the proposed evaluation methods, based on measurements of inherent noise of tested supercapacitors, is a method predicting their degradation.

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“…12 On another example, calendar aging of supercapacitors were followed by careful investigations of their flicker noise. 13 In batteries, early reports of electrochemical noise measurements were conducted using aqueous chemistries as extensions to the corrosion studies. Lead-acid batteries were the focus of these reports where electrolysis can be followed via noise measurements.…”

mentioning

confidence: 99%

“…Therefore, noise studies on batteries are focused on voltage noise only. [13][14][15]17 For simplicity, throughout the rest of this manuscript, noise always refers to voltage noise.…”

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confidence: 99%

A Method for Voltage Noise Measurement and Its Application to Primary Batteries

Uzundal

Ülgüt

2018

J. Electrochem. Soc.

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Though proven effective in localized corrosion studies, electrochemical noise measurements in batteries with Lithium based chemistries suffer from lack of well-defined measurement and analysis methods. The high capacitance electrodes made out of highly porous materials requires noise measurements to be extremely precise since the small charge due to stochastic events leading to electrochemical noise leads to very small voltage changes due to the large capacitance. Typically, the required precision is achieved by high gain after the offset is corrected. In this article, we are introducing a new offset correction scheme that mitigates the negative effects of electronic offset reduction methods. Using this new offset correction scheme we report the measurement of the otherwise elusive voltage noise of primary Li batteries.

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Measurements of flicker noise in supercapacitor cells

Cited by 8 publications

References 18 publications

Ag(e)ing and Degradation of Supercapacitors: Causes, Mechanisms, Models and Countermeasures

Ag(e)ing and Degradation of Supercapacitors: Causes, Mechanisms, Models and Countermeasures

Methods of Assessing Degradation of Supercapacitors by Using Various Measurement Techniques

A Method for Voltage Noise Measurement and Its Application to Primary Batteries

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