Evaluating the impact of curing temperature in delayed ettringite formation using electrochemical impedance spectroscopy

2021 ◽  
Vol 282 ◽  
pp. 122726
Author(s):  
Yogesh Kumar Ramu ◽  
Vute Sirivivatnanon ◽  
Paul Thomas ◽  
Yuvaraj Dhandapani ◽  
Kirk Vessalas
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Curing Temperature ◽  
Delayed Ettringite Formation ◽  
Ettringite Formation ◽  
The Impact

scholarly journals Electrochemical Impedance Spectroscopy as a Diagnostic Tool in Polymer Electrolyte Membrane Electrolysis

Materials ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1368 ◽  
Author(s):  
Stefania Siracusano ◽  
Stefano Trocino ◽  
Nicola Briguglio ◽  
Vincenzo Baglio ◽  
Antonino Aricò
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Polymer Electrolyte ◽  
Diagnostic Tool ◽  
Electrochemical Impedance ◽  
Polymer Electrolyte Membrane ◽  
Membrane Electrode ◽  
Short Side ◽  
Electrolyte Membrane ◽  
The Impact

Membrane–electrode assemblies (MEAs) designed for a polymer electrolyte membrane (PEM) water electrolyser based on a short-side chain (SSC) perfluorosulfonic acid (PFSA) membrane, Aquivion®, and an advanced Ir-Ru oxide anode electro-catalyst, with various cathode and anode noble metal loadings, were investigated. Electrochemical impedance spectroscopy (EIS), in combination with performance and durability tests, provided useful information to identify rate-determining steps and to quantify the impact of the different phenomena on the electrolysis efficiency and stability characteristics as a function of the MEA properties. This technique appears to be a useful diagnostic tool to individuate different phenomena and to quantify their effect on the performance and degradation of PEM electrolysis cells.

scholarly journals Electrochemical Impedance Spectroscopy (EIS): Principles, Construction, and Biosensing Applications

Sensors ◽  
2021 ◽  
Vol 21 (19) ◽  
pp. 6578
Author(s):  
Hend S. Magar ◽  
Rabeay Y. A. Hassan ◽  
Ashok Mulchandani
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
State Of The Art ◽  
Theoretical Background ◽  
Review Article ◽  
Antigen Recognition ◽  
Biomedical Diagnosis ◽  
Basic Concepts ◽  
The Impact

Electrochemical impedance spectroscopy (EIS) is a powerful technique used for the analysis of interfacial properties related to bio-recognition events occurring at the electrode surface, such as antibody–antigen recognition, substrate–enzyme interaction, or whole cell capturing. Thus, EIS could be exploited in several important biomedical diagnosis and environmental applications. However, the EIS is one of the most complex electrochemical methods, therefore, this review introduced the basic concepts and the theoretical background of the impedimetric technique along with the state of the art of the impedimetric biosensors and the impact of nanomaterials on the EIS performance. The use of nanomaterials such as nanoparticles, nanotubes, nanowires, and nanocomposites provided catalytic activity, enhanced sensing elements immobilization, promoted faster electron transfer, and increased reliability and accuracy of the reported EIS sensors. Thus, the EIS was used for the effective quantitative and qualitative detections of pathogens, DNA, cancer-associated biomarkers, etc. Through this review article, intensive literature review is provided to highlight the impact of nanomaterials on enhancing the analytical features of impedimetric biosensors.

Modeling the impedance spectra of mixed conducting thin films with exposed and embedded current collectors

2017 ◽  
Vol 19 (38) ◽  
pp. 26310-26321 ◽  
Author(s):  
Jiapeng Liu ◽  
Francesco Ciucci
Keyword(s):  
Thin Films ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Impedance Spectra ◽  
Current Collectors ◽  
The Impact

This article studies the electrochemical impedance spectroscopy response of mixed ionic-electronic conducting (MIEC) films with embedded current collectors (CCs). Even though the MIEC surface is fully exposed, the impact of the CCs can be significant.

Aging Behavior of Polyaspartic Polyurea under Salt-Fog Exposure Studied by Electrochemical Impedance Spectroscopy

2012 ◽  
Vol 455-456 ◽  
pp. 760-764
Author(s):  
Wei Bo Huang ◽  
Jing Zhang ◽  
Xin Mao Li ◽  
Ping Lu
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Coating Thickness ◽  
Electrochemical Impedance ◽  
Great Influence ◽  
Low Frequency ◽  
Curing Temperature ◽  
Aging Behavior ◽  
Protective Properties ◽  
Salt Fog

- Electrochemical impedance spectroscopy (EIS) was used to study the thickness and curing temperature influence on the aging behavior of polyaspartic ester (PAE) polyurea under salt fog exposure in this paper. The result has demonstrated that coating thickness and curing temperature had great influence on aging behavior of the PAE-t-HDI prepolymer-D2000H65 aliphatic polyurea (T3). The low frequency impedance after 1day exposure increased from 5.31×1010Ω·cm to 7.96×1010Ω while coating thickness was increased from 40μm to 200μm, and the low frequency impedance of 200μm coating was 7.42×1010Ω·cm2 high after 200 days exposure. The low frequency impedance after 1day and 200 days exposure increased by 0.83×1010 Ω·cm2 and 0.39×109Ω·cm2 respectively, while curing temperature were increased from 60°C to 80°C. Suggestions have been made, namely that increase the coating thickness and curing temperature can improve low frequency impedance of PAE polyurea, as a result, improve the protective properties of the coatings.

The Influence of the Curing Temperature on the Properties of Some Silane Films

2017 ◽  
Vol 68 (7) ◽  
pp. 1413-1418
Author(s):  
Ioana Alina Ciobotaru ◽  
Danut Ionel Vaireanu ◽  
Irina Elena Ciobotaru ◽  
Oana Claudia Ciobotea Barb
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Electrochemical Techniques ◽  
Open Circuit ◽  
Curing Temperature ◽  
Drying Process ◽  
Pearson Coefficient ◽  
Coefficient Versus ◽  
Electrochemical Impedance Spectroscopy Data

This paper discusses the importance of the temperature drying process on some silane films in order to obtain a coating with specific properties (stability in time, resistance to corrosion attack and compactness) that would make them appropriate to be used as anticorrosive protection layers. Electrochemical techniques such as open circuit potential and electrochemical impedance spectroscopy were employed in order to characterize the investigated deposited silane films on aluminium substrate. The validation of the experimental electrochemical impedance spectroscopy data was carried out using the comparison of the validation coefficient versus the Pearson coefficient computed for a a=0.05.

Sign in / Sign up

Export Citation Format

Share Document