The active surface of the electrode is a silver disk set into the tip of the body. A silver disk electrode is chosen for two main areas: as a catalyst surface with high CO selectivity in the electrochemical reduction of carbon dioxide, and in analytical work such as cyanide and sulfide determination. Between measurements the surface is easily renewed by a short polish with alumina.

This version has a T-shaped PTFE body: the lower part is a wider cylinder, with the silver disk on its end face. The T type is chosen to fit the body size required by specific cells or holders. Disk diameters: Ø2–6 mm. PTFE is inert to nearly all chemicals but soft. Straight, L-shaped and PEEK T-type versions are separate products.

Key Features

PTFE body: inert to nearly all acids, bases and solvents; as a soft material (Shore D ≈ 55) it needs care against scratches and dents
Silver disk: a catalyst surface with high CO selectivity in CO₂ reduction
T-shaped body: the lower section of the straight body is a wider cylinder; the disk sits on its end face
Suitable for analytical applications such as cyanide and sulfide determination
Easy surface renewal with a 1–2 minute alumina polish
Disk diameter options Ø2, 3, 4, 5 and 6 mm
Body length 60 mm, total length ≈75 mm (manufacturer data); gold-plated contact pin at the tail

Technical Specifications

Electrode type	Silver disk working electrode
Electrode shape	T-shaped; lower body section is a wider cylinder, disk on its end face
Body material	PTFE (polytetrafluoroethylene)
Disk material	Silver
Disk diameter	2, 3, 4, 5, 6 mm
Silver disk length	5–10 mm (manufacturer data)
Body / total length	60 mm / ≈75 mm (manufacturer data)
Connection	Gold-plated pin
Polishing	Alumina with pure water on microcloth for 1–2 minutes; rinse, and if needed ultrasonic cleaning for no more than 5 minutes
Body chemical resistance	Inert to nearly all chemicals and solvents; attacked only by very reactive substances such as elemental alkali metals, elemental fluorine and chlorine trifluoride
Operating temperature	Not specified for this product. One electrode maker recommends 10–25 °C for similar PTFE-body disk electrodes; a body expanding with heat can break the seal

Available Options

Diameter	Description
2 mm	Ø2 mm silver disk
3 mm	Ø3 mm silver disk
4 mm	Ø4 mm silver disk
5 mm	Ø5 mm silver disk
6 mm	Ø6 mm silver disk

For sizes and specifications not listed above, you can request a custom quotation through the Quote Form.

Applications

Electrochemical CO₂ reduction (CO₂RR) and CO selectivity studies
Non-aqueous electrolytes made with solvents reported to swell PEEK, such as dichloromethane, DMSO or THF
Voltammetry and impedance measurements in cells and holders designed for the T-shaped body
Cyanide and sulfide determination
Comparing electrocatalyst surfaces against a flat silver reference surface