scholarly journals Modeling the electrochemical behavior and interfacial junction profiles of bipolar membranes at solar flux relevant operating current densities

2021 ◽  
Vol 5 (7) ◽  
pp. 2149-2158
Author(s):  
Meng Lin ◽  
Ibadillah A. Digdaya ◽  
Chengxiang Xiang
Keyword(s):  
Chemical Reactions ◽  
Electrochemical Behavior ◽  
Solar Flux ◽  
Water Dissociation ◽  
Bipolar Membranes ◽  
Operating Current ◽  
Current Densities ◽  
Physics Model ◽  
And Diffusion

A 1D, multi-physics model that accounts for the migration and diffusion of species, electrostatics, and chemical reactions, in particular water dissociation, at BPM interfaces was developed to study the electrochemical behavior.

scholarly journals Electrochemical behavior of AgCu50 in alkaline media in the presence of chlorides and 2-mercaptobenzothiazole

2017 ◽  
Vol 53 (3) ◽  
pp. 349-356 ◽  
Author(s):  
V. Grekulovic ◽  
M. Rajcic-Vujasinovic ◽  
A. Mitovski
Keyword(s):  
Electrochemical Behavior ◽  
Electrode Surface ◽  
Anodic Polarization ◽  
Pure Copper ◽  
Inhibitory Effect ◽  
Open Circuit ◽  
Alkaline Media ◽  
Nacl Solution ◽  
Pure Silver ◽  
Current Densities

Electrochemical behavior of an alloy AgCu50, pure copper, and pure silver, respectively, was investigated by measuring the open circuit potentials using anodic potentiodynamic polarization and potentiostatic method in 0.1 moldm-3 NaOH + 0.02 moldm-3 NaCl solution, without and with adding 2-mercaptobenzothiazole in various concentrations (0.00001 - 0.001 moldm-3). Anodic polarization curves for AgCu50 alloy, showed four current peaks. Potentiostatic curves showed that values of the stationary current densities drop down with the increase of 2-mercaptobenzothiazole concentration in the electrolyte. The electrode surface was analyzed by optical microscopy after the potentiostatic oxidation. Micrographs confirmed that 2-mercaptobenzothiazole has got the inhibitory effect by forming the film of CuMBT and AgMBT which protect the electrode surface from corrosion.

Shock Wave Structure in a Linear Elastic Mixture With Binary Chemical Reactions

1975 ◽  
Vol 42 (1) ◽  
pp. 171-175 ◽  
Author(s):  
J. W. Nunziato ◽  
E. K. Walsh ◽  
D. E. Amos
Keyword(s):  
Chemical Reactions ◽  
Numerical Technique ◽  
Wave Structure ◽  
Compressive Wave ◽  
Exothermic Reactions ◽  
Linear Elastic ◽  
Elastic Mixture ◽  
Solid Explosives ◽  
Thermochemical Equilibrium ◽  
And Diffusion

In this paper we consider the propagation of small-amplitude, one-dimensional shock waves in a linear elastic mixture with binary chemical reactions. The effects of heat conduction and diffusion are neglected. Using a numerical technique, along with the results of a singular surface analysis, the behavior of a compressive wave generated by a constant velocity suddenly applied to the boundary of a half space is determined. The influence of the type of chemical reaction and of the underlying state of thermochemical equilibrium on the wave behavior is discussed. In the case of exothermic reactions the results are found to be in qualitative agreement with some recent experimental observations on solid explosives.

Effect of Bi Addition on the Electrochemical Behavior of Zinc Electrodes in Concentrated Alkaline Solutions

2013 ◽  
Vol 805-806 ◽  
pp. 1240-1249
Author(s):  
Hong Xia Liang ◽  
Fu Rong Li ◽  
Zhi Lin Wang
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Linear Polarization ◽  
Electrochemical Behavior ◽  
Open Circuit Potential ◽  
Open Circuit ◽  
Exchange Current ◽  
Zinc Electrode ◽  
Current Densities ◽  
Scanning Electron

The electrochemical behavior of zinc electrode with bismuth addition in 35%KOH solutions has been investigated systematically by electrochemical methods including linear polarization, potentiostatic polarization, potential-time measurements at a constant current density, combining the observations of scanning electron microscopy (SEM). Linear polarization results showed that the open circuit potential shifted positively with increasing bismuth content, which is explained based on the gassing data and change in the exchange current of the zinc electrode. Addition of bismuth increased the exchange current of zinc reaction and caused an increase in the measured open circuit potential. Galvanostatic results showed that the addition of bismuth shortened the passivation time. Scanning electron microscopy images showed that the addition of bismuth aggravated the corrosion of zinc electrode which may be responsible for the increased tendency to passivation at high current densities. It has been found that at low current densities the reaction kinetics may be increased by addition of Bi, which is general agreement with the discharging test of actual alkaline batteries.

scholarly journals Controlling Chemical Reactions in Confined Environments: Water Dissociation in MOF-74

2018 ◽  
Vol 8 (2) ◽  
pp. 270 ◽  
Author(s):  
Erika Fuentes-Fernandez ◽  
Stephanie Jensen ◽  
Kui Tan ◽  
Sebastian Zuluaga ◽  
Hao Wang ◽  
...  
Keyword(s):  
Chemical Reactions ◽  
Water Dissociation
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