Counter Electrode
Electrochemistry Supplies, Electrodes, Equipment Accessories
Oxidation, solvent and acid resistant platinum wire counter electrodes
Widely used in standard electrochemistry cells for cyclic voltammetry and more
Overview | Specifications | Pricing and Options
Platinum wire counter electrodes (also known as auxiliary electrodes) are widely used in standard electrochemistry cells for cyclic voltammetry, linear sweep voltammetry, and other electrochemical techniques. They are favoured over others largely due to their low price and resistance to oxidation, solvents and acids. Our 99.99% purity platinum wire counter electrodes are available in polytetrafluoroethylene (PTFE) plastic bodies.
Buy our high-quality counter electrode in packs of 5 to save up to 5% or packs of 10 to save up to 10%. Our counter electrode is also available in our excellent value electrochemical cells kit and our low price potentiostat bundle for a complete system. Qualifying orders ship free as part of the Ossila Guarantee.
Platinum Wire Counter Electrode
High quality counter electrode with PTFE body and 99.99% purity platinum
From £190
Counter Electrode Multipacks
Buy counter electrode in pack of 5 to save up to 5% or pack of 10 to save up to 10%
From £950
What is the Function of a Counter Electrode?
In a three electrode system, current is recorded as electrons flowing through the working electrode and the counter electrode. In this set up, the potential of the counter electrode is not normally measured but is adjusted to balance the reaction occurring at the working electrode.
When reduction occurs at the working electrode, oxidation takes place at the counter electrode. To avoid oxidised species generated at the counter electrode interfering and contaminating with any ongoing reactions at the working electrode, the counter electrode can sometimes be physically separated from the working electrode compartment using a glass frit.
In a two electrode system, a single electrode serves as both the counter electrode and the reference electrode. In this case, the surface area of the counter electrode should be greater than the surface area of the working electrode to ensure that the kinetics of the reaction occurring at the counter electrode do not inhibit those occurring at the working electrode.
Why use a Platinum Counter Electrode?
Platinum is a good choice of material for a counter electrode mostly due to its inertness. It is important for all electrochemical methods that the counter electrode allows current to flow without causing a chemical change in the solution being studied, as this would alter the results of the experiment or measurement. Platinum counter electrodes are oxidation, solvent and acid resistant.
Specifications
All dimensions are in millimetres.
| Purity | 99.99% |
Pricing and Options
| Product Name | Product Code | Price |
| Platinum Wire Counter Electrode | C2014A1 | £190 |
| Platinum Wire Counter Electrode - Pack of 5 | C2014A1-5 | £950 |
| Platinum Wire Counter Electrode - Pack of 10 | C2014A1-10 | £1700 |
| Electrochemical Cell Kit with Electrodes | C2016A1 | £560 |
| Luggin Capillary Electrochemical Cell Kit with Electrodes | C2016B1 | £620 |