Role of Magnetic Forces in Electrochemical Reactions at Microstructures

2005 ◽  
Vol 109 (42) ◽  
pp. 19845-19850 ◽  
Author(s):  
A. Bund ◽  
H. H. Kuehnlein
Keyword(s):  
Electrochemical Reactions ◽  
Magnetic Forces

Role of electrochemical reactions in pressure solution

2009 ◽  
Vol 73 (10) ◽  
pp. 2862-2874 ◽  
Author(s):  
George W. Greene ◽  
Kai Kristiansen ◽  
Emily E. Meyer ◽  
James R. Boles ◽  
Jacob N. Israelachvili
Keyword(s):  
Electrochemical Reactions ◽  
Pressure Solution

The role of oxygen vacancies of ABO3 perovskite oxides in the oxygen reduction reaction

2020 ◽  
Vol 13 (5) ◽  
pp. 1408-1428 ◽  
Author(s):  
Qianqian Ji ◽  
Lei Bi ◽  
Jintao Zhang ◽  
Haijie Cao ◽  
X. S. Zhao
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Oxygen Vacancies ◽  
Reduction Reaction ◽  
Electrochemical Reactions ◽  
Abo3 Perovskite ◽  
Energy Conversion And Storage ◽  
Storage Technologies ◽  
And Storage

The oxygen reduction reaction (ORR) is one of the most important electrochemical reactions in energy conversion and storage technologies, such as fuel cells and metal–air batteries.

KINETICS OF ELECTROCHEMICAL REACTIONS ON MODEL SUPPORTED CATALYSTS: READSORPTION AND MASS TRANSPORT

2008 ◽  
Vol 15 (06) ◽  
pp. 745-751
Author(s):  
VLADIMIR P. ZHDANOV ◽  
BENGT KASEMO
Keyword(s):  
Mass Transport ◽  
Supported Catalysts ◽  
Reaction Scheme ◽  
Electrochemical Reactions ◽  
Subsequent Reaction ◽  
Flow Cells ◽  
2D And 3D ◽  
Kinetics Of ◽  
And Diffusion

To bridge the structure gap, electrochemical reactions can be studied in flow cells with nm-sized catalyst particles deposited or fabricated on the cell walls. The understanding of the role of mass transport in such cells is now limited. To clarify the likely effects in this field, we analyze the simplest reaction scheme including intermediate desorption, readsorption, and subsequent reaction and show how the net rate of the formation of intermediate can be influenced by its diffusion in the liquid phase. With certain approximations, we derive analytical results describing reaction and diffusion near catalyst particles and in more remote regions in the simplest 1D case and more complex 2D and 3D situations.

Aims of Electrocatalysis

2015 ◽  
Vol 228 ◽  
pp. 179-186
Author(s):  
B. Łosiewicz ◽  
Magdalena Popczyk
Keyword(s):  
Fuel Cells ◽  
Water Oxidation ◽  
Electrocatalytic Activity ◽  
Catalytic Process ◽  
Electrochemical Reactions ◽  
Direct Transfer

Electrocatalysis as a catalytic process involving oxidation or reduction through the direct transfer of electrons is of key importance subject in various fields of chemistry and associated sciences. Heterogeneous electrocatalysis is especially important to the development of water oxidation and fuel cells catalysts. This paper presents the brief description of the electrocatalysis and the mechanism of electrochemical reactions. Different factors and their influence on electrocatalytic activity, have been discussed. Role of nanoparticles in electrocatalysis received a particular emphasis. Long-term tasks of electrocatalysis were also definied.

scholarly journals The Straightforward Route Towards the Theoretical Specific Free Enthalpy of Electrochemical Reactions

2021 ◽  
Author(s):  
Roland Hermann Pawelke
Keyword(s):  
Ideal Gas ◽  
Electrochemical Reactions ◽  
Free Enthalpy ◽  
Hydrogen Electrode ◽  
Battery Cell ◽  
Faraday’S Law ◽  
Ideal Gas Law ◽  
Sodium Sulfur

<p></p>This paper outlines a simple yet precise method for identifying the theoretical specific free enthalpy of electrochemical reactions on basis of the ideal gas law, equilibrium thermodynamics and Faraday's law, exploiting the normative role of the standard hydrogen electrode in electrochemistry. The result of this approach are discussed in relation to four battery cell reaction examples: LiCoO<sub>2</sub>/C<sub>6</sub>, LiFePO<sub>4</sub>/C<sub>6</sub>, sodium-sulfur (NAS) and NaCl–Ni (ZEBRA). The agreement between calculated and practical values is near-excellent for even stoichiometries which bespeaks the virtually ideal nature of reversible reactions and the quality of the practical optimization efforts alike. These findings highlight the principal nature of intrinsic thermodynamic limitation to equilibrium mass transfer and its key role towards understanding reversible chemical energy storage in a global sense.<br><p></p>

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