Raman Electrochemical Flow Cell, active area: 3.5 cm2, volume: 4.5 mL (redox.me)
This cell combines two classical analytical techniques such as electrochemistry and Raman spectroscopy, to obtain in-situ chemical information about the reactions taking place during an electrochemical experiment. It consists mainly of three elements: (i) sample holder with Tantalum (formerly Copper) foil serving as an electric contact to working electrode surface, (ii) chamber in which reference and counter electrodes are installed together with electrolyte inlet and outlet and (iii) lid which seals the cell and holds the Sapphire window. The sample consisting of a thin film of electrochemically active material deposited on a rigid or flexible substrate (working electrode) is loaded from the bottom via magnetic or screw mount. The counter or/and reference electrodes are mounted in a top casing (either 2-, or 3-electrode setup. The oval counter electrode made of e.g. Platinum wire assures uniform distribution of the field lines along the path to working electrode. During an experiment Raman laser is focused onto the surface of a thin film working electrode through a transparent Sapphire window and thin layer of electrolyte (total optical path of 3.25 mm). The electrolyte thickness of 2.25 mm ensures free diffusion of ions (e.g. protons) and its counter ions.
The electrode adapter for installing 6 mm dia. electrodes inside Raman ECFC is available here. It enables using disk electrode, plug with clip or any other rod-shape electrode (e.g. graphite rod) or current collector (e.g. metal mesh, graphite coated metal mesh, metal foil, graphite coated metal foil, metal foam, carbon woven and non-woven fabrics, carbon paper, etc.) as working electrode instead of a flat electrode in default Raman ECFC configuration.
The screw mount variant of Raman ECFC can be converted into GDE Raman ECFC by using Gas Compartment. This conversion allows installation of Gas Diffusion Electrodes as working electrode.
The cell elements are constructed with materials that are inert to the sample (PEEK, Fluorocarbons). It well fits aqueous (FKM O-Rings) and organic solvent (FFKM O-Rings) electrolyte requirements. The construction is gas-tight and can be used when the removal and exclusion of contaminants such as oxygen and water is required by bubbling of an inert gas through the electrolyte (in an external reservoir).
Application note:
This cell can be used to track kinetic phenomena such as the near-surface proton concentration changes during oxidation and reduction reaction at working electrode. It can be also used to identify materials such as carbon, metal oxides, polymers and electrolytes, and to determine their structure and distribution. Various metals are suitable for this cell as auxiliary electrode including Platinum, Gold and Silver.
Specification:
nominal exposure area: 3.5 cm2
electrolyte volume: 4.5 mL
optical path (including Sapphire window): 3.25 mm
electrode plug diameter: 6 mm
Intrastat data:
HS Code: 90275000
Country of Origin: Sweden
NET weight: 200 g
Product includes:
1 x chamber
1 x Reference electrode (Ag/AgCl, or Ag/Ag+), 30mm
1 x Metal wire auxiliary electrode – ST 0.6/150 mm, Platinum
1 x Sapphire window – 0054PSPCM
1 x lid
1 x WE Tantalum contact
1 x sample holder
1 x plug – 0005CPEMA
Select configuration
Electrolyte type: water-based / organic electrolyte
Mount type: magnetic / screw
Operating video manual
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Rotation speed of integrated stirrer: 10-4000 rmp.
Miniature ion-selective electrodes and reference electrode were designed for integration into the flow cell for determination of Cl-, K+, Ca2+ and Na+ ions.
In flow mode, the system can operate automatically. The speed of the integrated stirrer can also be controlled by applying the corresponding voltage to the motor, connected to a stabilized source.
The flow cell with one selected ISE can be used for:
- Automatic or semi-automatic measurement of concentration of Cl-, K+, Ca2+ and Na+ ions in various solutions (following prior calibration)
- For continuous measurement of changes in concentration of Cl-, K+, Ca2+ and Na+ ions.
* For this product, we recommend our customers use the Training Service from BVT.
(https://bvt.cz/produkt/offer-of-long-term-automated-measurements-on-bvt-apparatus/)
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Membrane Capacitive Deionization configurable cell (redox.me)
Read moreMembrane Capacitive Deionization (MCDI) configurable cell has been designed to conduct research on removal of charged ionic species from aqueous or organic solutions (i.e., Desalination/Demineralization) via electrostatic (i.e., non-Faradaic) or electrochemical (redox) interactions. The MCDI cell contains two graphite current collectors that can serve as polarization electrodes. However, if the electrode material is the subject of research, it should be applied to an additional current collector, such as graphite paper or metal felt (not included in the product). Different electrode materials can be installed on both sides of the cell. If the thickness of these electrodes exceeds 250 micrometers, different gaskets are required. In such a case, please contact us for a solution.
The cell is designed in such a way that replacing the electrodes does not require removing the membranes or flow fields. It is enough to unscrew the plungers on both sides and replace the electrodes. In the standard configuration, the liquid in the main channel and side channels flows through the flow field cut from PEEK. However, these can be replaced with a porous material such as felt or a battery spacer, which will allow fluid flow. If work with materials of dimensions different from those listed in the specification is required, we can supply seals of different thicknesses or customize the cell. The cell allows for the installation of one or two ion-exchange membranes (not included in the setup). Their thickness is not critical, and it is not necessary to adjust the thickness of the membrane gaskets pressing them. The cell elements are constructed with inert materials to the sample (PEEK). It well fits aqueous (FKM gaskets and O-rings) and organic solvent (FFKM gaskets and O-rings) electrolyte requirements. The construction of the cell is gas-tight.
Application note:
MCDI cell can be configured to allow the following cell architectures:- Flow-by CDI consisting of: (i) two porous carbon or metal based current collectors coated with capacitive (e. non-Faradaic) material, and (ii) a main flow field enabling the feed water to be transported between electrodes. In this configuration, side flow fields and membranes are not installed.
- Membrane CDI consisting of: (i) two porous carbon or metal based current collectors coated with capacitive (e. non-Faradaic) material, (ii) two ion-exchange membranes (cation exchange membrane and anion exchange membrane) separating electrodes from the main flow field, and (iii) a main flow field enabling the feed water to be transported between electrodes. In this configuration, side flow fields are typically not installed. However, there are cases where installing both side flow fields is justified. All the graphics included in the product page refer to that configuration.
- Inverted CDI consisting of: (i) two porous carbon or metal based current collectors coated with capacitive (e. non-Faradaic) material where anode is treated for net negative surface charge and a cathode is treated for net positive surface charge, and (ii) a main flow field enabling the feed water to be transported between electrodes. In this configuration, side flow fields and membranes are not installed.
- Flow-electrode CDI consisting of: (i) two porous carbon or metal based current collectors with flowing electrodes made of capacitive (e. non-Faradaic) carbon suspension, (ii) two ion-exchange membranes (cation exchange membrane and anion exchange membrane) separating electrodes from the flow chamber, (iii) a main flow field enabling the feed water to be transported between electrodes, and (iv) two side flow fields for liquid electrodes. All the graphics included in the product page refer to that configuration.
- Hybrid CDI consisting of: (i) a Faradaic (e. battery) electrode for cation adsorption/desorption, (ii) a capacitive (i.e. non-Faradaic) electrode for anion adsorption/desorption, (iii) an anion exchange membrane placed adjacent to the capacitive electrode, and (iv) a main flow field enabling the feed water to be transported between electrodes. In this configuration, side flow fields and a cation-exchange membrane are not installed.
- Cation intercalation desalination consisting of: (i) two porous carbon or metal based current collectors coated with Faradaic cation intercalation materials, (ii) an anion exchange membrane separating electrodes, and (iii) a main flow field enabling the feed water to be transported between electrodes. In this configuration, one side flow field and cation-exchange membrane are not installed.
- Desalination battery consisting of: (i) two porous carbon or metal based current collectors coated with redox (e. Faradaic) material (one for cation adsorption/desorption and the other for anion adsorption/desorption), and (ii) a main flow field enabling the feed water to be transported between electrodes. In this configuration, side flow fields and membranes are not installed.
Specification:
tubing size: 4 mm OD
fitting type: push-in, M5 male
electrode size: 60 mm x 60 mm (36 cm2)
recommended total electrode thickness: 200-250 µm
membrane size: 70 mm x 85 mm
maximum operating pressure: 20 bar
maximum operating temperature 150 ºCIntrastat data:
HS Code: 90278080
Country of Origin: Sweden
NET weight: 1300 gProduct includes:
2 x stand, anodized aluminum
2 x plunger holder, SS 316L
2 x PEEK plunger
2 x tantalum current collector
2 x graphite current collector
1 x threaded end plate, SS 316L
1 x unthreaded end plate, SS 316L
1 x PEEK outer cell body
1 x PEEK inner cell body
1 x set of fittings
2 x female banana connectors, 4 mm dia.
1 x PEEK main flow field, 0.5 mm thick
2 x PEEK side flow field, 0.5 mm thick
1 x set of gaskets (FKM or FFKM) including:1 x main flow gasket, 0.5 mm thick
2 x membrane gasket, 0.25 mm thick
2 x side flow gasket, 0.5 mm thick
2 x electrode gasket, 0.25 mm thick -
USB Potentiostat Galvanoplot
Read moreUSB Potentiostat Galvanoplot is a super small, low-cost and affordable device suitable for dedicated volume applications, which is optimized for screen-printed sensor and biosensor applications. It can be used in many other research areas and with other electrochemical sensors, for corrosion measurement, battery and super-capacitors or fuel cells.
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- Operating system compatibility: Windows 8, 10+
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Device Usage
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Set of twenty electrochemical sensors with a simple connector to find the best one to fit your application.
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