New Method for Characterization of the Open Circuit Potential Curve for Battery Cathode Materials

We present the preparation and inhibition behavior of rebar in the presence of calcium nitrate (CN)-containing microcapsules with concentrations of 0.50, 2.00, and 5.00 wt.% in concrete. From both open circuit potential (OCP) and electrochemical impedance spectroscopy spectra, it was found that an addition of microcapsules containing CN corrosion inhibitor into concrete beams successfully repassivated or maintained the passivity of the rebar when the concrete was cracked. This corrosion inhibitor repassivated the rebar by forming a passive layer on the rebar surface under the crack. This repassivation process was evident by an increase of OCP values to more positive values or by stable OCP values at around -100 mV vs SCE. An increase in phase angle after corrosion activation for the sample with 2.00 wt.% microcapsule clearly showed this repassivation process. The optimum concentration for maintaining the passivity on rebar in the cracked concrete was found to be 5.00 wt.%.

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Synthesis and characterization of sintered hydroxyapatite/lignin coatings on titanium

Hemijska industrija ◽

10.2298/hemind110919086s ◽

2012 ◽

Vol 66 (2) ◽

pp. 187-192

Author(s):

Rade Surudzic ◽

Sanja Erakovic ◽

Vesna Miskovic-Stankovic

Keyword(s):

Simulated Body Fluid ◽

Body Fluid ◽

Open Circuit Potential ◽

Electrochemical Impedance ◽

Open Circuit ◽

Constant Voltage ◽

Corrosion Stability ◽

Similar Chemical ◽

Titanium Surfaces

In order to improve corrosion stability and biocompatibility of titanium surfaces, hydroxyapatite (Ca10(PO4)6(OH)2, HAP) has been used as coating material due to the fact that it possess similar chemical composition as bone tissue. Lignin?s (Lig) usage in medical applications could be interesting because it could lead to thermal stability, hydrophilicity, biocompatibility and biodegradability of different materials. Bioceramic hydroxyapatite/lignin (HAP/Lig) coatings on titanium were obtained from ethanol suspension by electrophoretic deposition method. The uniform and compact HAP/Lig coatings were deposited at constant voltage of 60 V for 45 s and sintered at 900?C in argon atmosphere. The corrosion stability of sintered HAP/Lig coatings in simulated body fluid (SBF) at 37?C was investigated by open circuit potential-time measurements and electrochemical impedance spectroscopy (EIS). The greater values of open circuit potential, as well as EIS results, indicated improved corrosion resistance and good corrosion stability of HAP/Lig coatings in simulated body fluid at 37?C .

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Characterization of Acrylic Hydrogels by Open Circuit Potential Monitoring

Journal of Applied Electrochemistry ◽

10.1023/b:jach.0000031165.06422.b5 ◽

2004 ◽

Vol 34 (7) ◽

pp. 729-734 ◽

Cited By ~ 8

Author(s):

J.P. Wilburn ◽

M. Ciobanu ◽

D.A. Lowy

Keyword(s):

Open Circuit Potential ◽

Open Circuit ◽

Potential Monitoring

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Non-Destructive Degradation Diagnostics of Lithium-Ion Cells Considering Aging-Related Changes in the Shape of the Half-Cell Open Circuit Potential Curve of Silicon-Graphite

ECS Meeting Abstracts ◽

10.1149/ma2021-023381mtgabs ◽

2021 ◽

Vol MA2021-02 (3) ◽

pp. 381-381

Author(s):

Julius Schmitt ◽

Markus Schindler ◽

Andreas Jossen

Keyword(s):

Open Circuit Potential ◽

Lithium Ion ◽

Open Circuit ◽

Potential Curve ◽

Half Cell ◽

Lithium Ion Cells ◽

Non Destructive

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The Bevavior of Ceramic Coating on Titanium Using Chemical and Electrochemical Deposition

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.330-332.577 ◽

2007 ◽

Vol 330-332 ◽

pp. 577-580 ◽

Cited By ~ 3

Author(s):

D. Ionita ◽

D. Bojin ◽

Ioana Demetrescu

Keyword(s):

Electrochemical Deposition ◽

Open Circuit Potential ◽

Ceramic Coating ◽

Open Circuit ◽

Electrochemical Methods ◽

Bioactive Coating ◽

Cyclic Voltametry

The goal of this paper is elaboration and characterization of chemical and electrochemical phosphate deposition on titanium. The behavior of the bioactive coating was evaluated using electrochemical methods (open circuit potential, cyclic voltametry) and spectroscopy (FTIR and atomic adsorbtion spectroscopy).

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Obtaining and Characterization of Zirconium and Cerium Coatings

Materials Science Forum ◽

10.4028/www.scientific.net/msf.869.711 ◽

2016 ◽

Vol 869 ◽

pp. 711-715

Author(s):

Larissa Oliveira Berbel ◽

Larissa Aparecida Corrêa Matos ◽

Paulo Vitor Sochodolak ◽

Claudia Schlindwein ◽

Paulo Rogério Pinto Rodrigues ◽

...

Keyword(s):

Metal Surfaces ◽

Anodic Polarization ◽

Open Circuit Potential ◽

Electrochemical Impedance ◽

Pechini Method ◽

Open Circuit ◽

Good Resistance ◽

Potentiodynamic Anodic Polarization ◽

Scanning Electron

Some metals prior to receiving a layer of paint should be submitted to a treatment of metal surface, since they are subjected to corrosion. This work aims the obtaining and characterization of a coating based on ceramics of cerium and / or zirconium for metal surfaces treatment. The ceramics were obtained by immersing the aluminum alloy 3003 and the carbon steel (SAE 1010) in the polymeric resin of citric acid and ethylene glycol according to the Pechini method. The characterization of the samples was performed using the following techniques: scanning electron microscopy (SEM), open circuit potential (OCP), electrochemical impedance spectroscopy (EIS) and Potentiodynamic Anodic Polarization (PAP). It was confirmed that the coatings of cerium and / or zirconium presented themselves as promise in the treatment of metal surfaces, because both showed good resistance, protecting the metal from corrosion.

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