PTFE Basic Electrochemical Cell

PTFE Basic Electrochemical Cell

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This cell is a sister version of BEC 50 mL. In this cell concept, all elements that stay in contact with an electrolyte or its fumes are made of PTFE and other fluorinated materials (tubing, fittings, and O-Rings). This cell is used wherever PEEK fails, i.e. when using electrolytes containing:

• Aqua regia - HNO3 + HCl
• Benzenesulfonic acid - aqueous C6H5SO3H
• Bromine (liquid) - pure Br2
• Carbolic Acid (Phenol) - C6H5OH
• Carbon Disulfide - CS2
• Chlorine (aqueous and anhydrous liquid) - Cl2
• Chlorosulfonic acid - pure ClSO3H
• Chromic Acid - aqueous H2CrO4 >50%
• Ethylene bromide (anhydrous) - pure CH2CHBr
• Fuming sulphuric acid (Oleum) - pure H2SO
• Hydrobromic acid - aqueous HBr
• Hydrofluoric acid - concentrated aqueous HF
• Nitric acid - aqueous HNO3 >50%
• Sulphuric acid - concentrated (96%) H2SO4
• Sulphurous acid - aqueous H2SO3

The chamber is also alkali-resistant, so it can be used instead of glass in experiments including high pH hot electrolytes. A full description of the difference between PEEK and PTFE cells can be found in our blog post. 
This is a stationary solution basic electrochemical (electrolytic) cell for measurements of electrodes in a form of: a) rod/disc (6 mm dia.), b) thin film deposited on flat substrate (using a wire clip) and c) membrane (using a wire clip). The working, counter and reference electrodes are mounted in a top casing either in 2-, or 3-electrode setup. When the reference electrode has a glass body, a liquid junction adapter is needed. The cell elements are constructed with materials that are inert to the sample (PTFE). 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.

Application note:

The reference electrode (or liquid junction adapter insertion tube) tip should be placed at the level of the working electrode center. This will ensure a low potential drop throughout the electrolyte solution for low-current experiments. Various auxiliary electrodes are suitable for this cell including metal wire and metal foil electrodes as well as graphite rod. The bubbling of gas through the solution must be stopped prior to experiment.

Specification:

Maximum electrolyte volume: 35 mL
Electrode plug diameter: 6 mm

Product includes

1 x PTFE lid
1 x PTFE chamber
1 x PTFE plug