Editors' Choice—Reaction Kinetics of Metal Deposition via Surface Limited Redox Replacement of Underpotentially Deposited Monolayer Studied by Surface Reflectivity and Open Circuit Potential Measurements

2017 ◽  
Vol 164 (4) ◽  
pp. D159-D168 ◽  
Author(s):  
Ela Bulut ◽  
Dongjun Wu ◽  
Nikhil Dole ◽  
Hasan Kilic ◽  
Stanko R. Brankovic
Keyword(s):  
Reaction Kinetics ◽  
Open Circuit Potential ◽  
Open Circuit ◽  
Metal Deposition ◽  
Surface Reflectivity ◽  
Kinetics Of ◽  
Underpotentially Deposited

Study on the swelling kinetics of superabsorbent using open circuit potential measurement

2008 ◽  
Vol 44 (3) ◽  
pp. 743-754 ◽  
Author(s):  
Xiaohua Qi ◽  
Mingzhu Liu ◽  
Zhenbin Chen ◽  
Fen Zhang
Keyword(s):  
Open Circuit Potential ◽  
Open Circuit ◽  
Swelling Kinetics ◽  
Potential Measurement ◽  
Kinetics Of

scholarly journals Efecto del tipo de acero y su acabado superficial sobre la cinética de fosfatizado con manganeso

2020 ◽  
pp. 1-17
Author(s):  
Josúe Gómez-Macías ◽  
Ricardo Conejo-Flores ◽  
Juan Manuel García-Gonzále ◽  
Juan Carlos Fuentes-Aceituno
Keyword(s):  
Steel Surface ◽  
Open Circuit Potential ◽  
Open Circuit ◽  
Phosphate Coating ◽  
Energy Dispersion Spectroscopy ◽  
X Ray ◽  
Manganese Phosphate ◽  
Kinetics Of ◽  
Scanning Electron

The objective of this work is to study the process of phosphatizing with manganese by immersion. In the literature there is not enough information on the phosphate process with manganese phosphate, hence the main contribution of the present. The methodology involves an electrochemical study, using open circuit potential techniques in order to follow the kinetics of the process. In the same way, the characterization of the coating formed on the surface of each steel used was carried out using scanning electron microscopy and X-ray energy dispersion spectroscopy. Through this technique, the time was found in which the internal layer of the coating developed on the phosphatized substrates, both on the rough and the rough sides of the steel samples. The results obtained show that the formation of the manganese phosphate coating on the steels depends both on the grain size of the steels at the beginning of the process, as well as on the surface finish to which the steel surface is subjected, resulting in an increase in the size of the crystals, and affecting the rate of disintegration and growth of the same.

Kinetics of Light-Induced Effects in Mixed-Phase Hydrogenated Silicon Solar Cells

2003 ◽  
Vol 762 ◽  
Author(s):  
Guozhen Yuea ◽  
Baojie Yan ◽  
Jeffrey Yang ◽  
Kenneth Lord ◽  
Subhendu Guha
Keyword(s):  
Solar Cells ◽  
Fill Factor ◽  
Equivalent Circuit Model ◽  
Open Circuit ◽  
Mixed Phase ◽  
Silicon Solar Cells ◽  
Initial Increase ◽  
Soaking Time ◽  
Hydrogenated Silicon ◽  
Kinetics Of

AbstractWe have observed a significant light-induced increase in the open-circuit voltage (Voc) of mixed-phase hydrogenated silicon solar cells. In this study, we investigate the kinetics of the light-induced effects. The results show that the cells with different initial Voc have different kinetic behavior. For the cells with a low initial Voc (less than 0.8 V), the increase in Voc is slow and does not saturate for light-soaking time of up to 16 hours. For the cells with medium initial Voc (0.8 ∼ 0.95 V), the Voc increases rapidly and then saturates. Cells with high initial Voc (0.95 ∼ 0.98 V) show an initial increase in Voc, followed bya Voc decrease. All light-soaked cells exhibit a degradation in fill factor. The temperature dependence of the kinetics shows that light soaking at high temperatures causes Voc increase to saturate faster than at low temperatures. The observed results can be explained by our recently proposed two-diode equivalent-circuit model for mixed-phase solar cells.

Impact Of Synthesis Route on the Water Oxidation Kinetics of Hematite Photoanodes

2020 ◽  
Author(s):  
Camilo A. Mesa ◽  
Ludmilla Steier ◽  
Benjamin Moss ◽  
Laia Francàs ◽  
James E. Thorne ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Reaction Kinetics ◽  
Water Oxidation ◽  
Oxidation Kinetics ◽  
Oxidation Reaction ◽  
Charge Accumulation ◽  
Optical Signals ◽  
Current Voltage ◽  
Voltage Performance ◽  
Kinetics Of

<p><i>Operando</i> spectroelectrochemical analysis is used to determine the water oxidation reaction kinetics for hematite photoanodes prepared using four different synthetic procedures. Whilst these photoanodes exhibit very different current / voltage performance, their underlying water oxidation kinetics are found to be almost invariant. Lower photoanode performance was found to correlate with the observation of optical signals indicative of charge accumulation in mid-gap oxygen vacancy states, indicating these states do not contribute directly to water oxidation.</p>

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