Related Experiment Video
Updated: Aug 7, 2026

Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
Role of magnetic forces in electrochemical reactions at microstructures
1Institute of Physical Chemistry and Electrochemistry, Dresden University of Technology, D-01062 Dresden, Germany. andreas.bund@chemie.tu-dresden.de
Abstract:
The effect of an external magnetic field (up to 0.8 T) on the anodic dissolution of microstructures has been investigated systematically. Copper and silver wires (100 microm in diameter) were embedded in epoxy resin and dissolved potentiostatically while a magnetic field was periodically switched on and off. A special feature of the thus prepared structures is that they show a smooth transition from an inlaid disk to a recessed disk electrode. An increase or a decrease of the limiting current density in the presence of B was found depending on the orientation of the magnetic field and the hydrodynamic conditions in the cell (natural or forced convection). The magnetic forces which are responsible for this are the Lorentz force and the gradient force. We propose a model which discusses the interaction of these forces with the natural and the forced convection to explain the experimental results.
Related Concept Videos
Magnetic Fields
A magnetic field is defined by the force that a charged particle experiences...
Electrochemical Systems
Magnetic Force
The magnetic force acting on a moving charge...
Magnetism
An individual magnetic pole cannot be isolated. No matter how small, every piece of a magnet contains a north pole and a south...
Electromotive Force
Processes at Electrodes

