Local Feedback Mode of Scanning Electrochemical Microscopy for Electrochemical Characterization of One-Dimensional Nanostructure:  Theory and Experiment with Nanoband Electrode as Model Substrate

2006 ◽  
Vol 78 (6) ◽  
pp. 1946-1957 ◽  
Author(s):  
Hui Xiong ◽  
Darrick A. Gross ◽  
Jidong Guo ◽  
Shigeru Amemiya
Keyword(s):  
Scanning Electrochemical Microscopy ◽  
Electrochemical Characterization ◽  
One Dimensional ◽  
Feedback Mode ◽  
Local Feedback ◽  
Theory And Experiment ◽  
Electrochemical Microscopy

scholarly journals Use of Amperometric and Potentiometric Probes in Scanning Electrochemical Microscopy for the Spatially-Resolved Monitoring of Severe Localized Corrosion Sites on Aluminum Alloy 2098-T351

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1132 ◽  
Author(s):  
Rejane M. P. da Silva ◽  
Javier Izquierdo ◽  
Mariana X. Milagre ◽  
Abenchara M. Betancor-Abreu ◽  
Isolda Costa ◽  
...  
Keyword(s):  
Scanning Electrochemical Microscopy ◽  
Oxygen Depletion ◽  
Localized Corrosion ◽  
Alloy Surface ◽  
Al Alloy ◽  
Spatially Resolved ◽  
Lower Oxygen ◽  
Local Ph ◽  
Electrochemical Microscopy

Amperometric and potentiometric probes were employed for the detection and characterization of reactive sites on the 2098-T351 Al-alloy (AA2098-T351) using scanning electrochemical microscopy (SECM). Firstly, the probe of concept was performed on a model Mg-Al galvanic pair system using SECM in the amperometric and potentiometric operation modes, in order to address the responsiveness of the probes for the characterization of this galvanic pair system. Next, these sensing probes were employed to characterize the 2098-T351 alloy surface immersed in a saline aqueous solution at ambient temperature. The distribution of reactive sites and the local pH changes associated with severe localized corrosion (SLC) on the alloy surface were imaged and subsequently studied. Higher hydrogen evolution, lower oxygen depletion and acidification occurred at the SLC sites developed on the 2098-T351 Al-alloy.

Characterization of Cathode/Electrolyte Interfacial Processes By Scanning Electrochemical Microscopy

2020 ◽  
Vol MA2020-02 (1) ◽  
pp. 159-159
Author(s):  
Di Huang ◽  
Chaiwat Engtrakul ◽  
Sanjini U. Nanayakkara ◽  
Hongmei Luo ◽  
Robert Tenent
Keyword(s):  
Scanning Electrochemical Microscopy ◽  
Interfacial Processes ◽  
Electrochemical Microscopy
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