Features of our Electrochemical Test Cell ElyFlow
Manufactured from Plastic
ElyFlow test cell is made of polytetrafluoroethylene (PTFE). With the PTFE test cell, you can even measure in fluoride-containing and strongly alkaline media.
ElyFlow is insensitive to breakage and virtually indestructible.
CNC technology enables precise and reproducible production of all relevant bores, recesses for seals, etc.
Homogeneous Electrical Field
Working and counter electrodes are arranged in parallel, as with FlexCell.
The electrolyte chamber is tubular. This also ensures a homogeneous electric field in ElyFlow.
Electrode Size – Electrode Distance
The working surface of the electrode is 10 cm².
The distance between the working electrode and the counter electrode is
2 cm. Measurements in poorly conducting electrolytes are possible now.
Higher current densities can be impressed.
Haber-Luggin Capillaries
There are two small reservoirs for the reference electrode, which merge into immobile Haber-Luggin capillaries. The Haber-Luggin capillaries end close to the working surface. This means that the potential is not disturbed by the streamline field or by any gas bubbles that are generated. The voltage drop across the electrolyte is very low due to the close distance.
CNC-technology in plastic allows the precise positioning of the Haber-Luggin capillary to the working electrode. This ensures the comparability of the measurements among each other and between the test cells.
Electrolyte Distribution and Removal of Gas Bubbles
There is an electrolyte inlet with three openings on each side that distribute the electrolyte flow toward the working and counter electrodes.
At the electrolyte outlet, there is a cavity (dome) for collecting the electrolyte and the controlled removal of gas bubbles from the electrochemical process.
Gas Supply of Gas Diffusion Electrodes
Gas diffusion electrodes can be supplied with reaction gases via the connections on the gas compartment. It is best to use a needle valve to control the gas flow.
Electrolyte Volume and Electrolyte Analysis
The electrolyte volume in the cell is 25 ml. However, it can be increased by pumping the electrolyte from a storage vessel through the measuring cell with the aid of a diaphragm pump. In this way, longer measuring times are possible.
In addition, the electrolyte in the storage vessel can be continuously monitored during the measurement: temperature, conductivity, pH-value, analysis of reaction products.
Use a heatable storage vessel when measuring at higher temperatures.
Protection against Unwanted By-products
Often the counter electrode is the anode. This means that very oxidizing ions are generated there. Depending on the electrolyte, these can be peroxides, perchlorate, persulfates, etc. Even the smallest amount of these ions reaching the working electrode can trigger severe corrosion processes.
With the additional analyte compartment for ElyFlow, a membrane can be installed to protect the working electrode from the reaction products.
Would you like to learn more about the test cell ElyFlow?
Electrochemical test cell ElyFlow
ElyFlow is a test cell optimized for electrolyte circuits for electrochemistry with a three-electrode set-up. Here you can find some general information.
What are Electrochemical Cells?
Electrochemical cells are systems that convert energy of chemical reactions into electrical energy. Conversely, electrical energy can also be used for electrochemical reactions.
How to Work with the Test Cell ElyFlow
Here you will find information on commissioning, maintenance and troubleshooting of the electrochemical test cell ElyFlow.
Would you like to learn more about the principles of electrochemical cells?
The Importance of Field Lines
The potentials which are to be measured are only identical on the so-called equipotential surfaces.
Homogeneous electric field lines are required for correct measurements. Here you can learn more about parallel field lines, equipotential surfaces and IR-drop.
The Importance of Haber-Luggin Capillaries
The electrolytical contact between the working and the reference electrode is made by the Haber-Luggin capillary. Haber-Luggin capillaries are reducing the IR-Drop between reference electrode and working electrode.
Electrolyte Key – Salt Bridge
An electrolyte bridge, also known as a salt bridge, is used for the contacting of various electrolytes. Commercial reference electrodes rely on salt bridges.
Are you convinced to purchase one of our voltammetric cells?
Electrochemical test cell ElyFlow PTFE
ElyFlow with its three-electrode set-up is optimized for electrolyte circuits.