The active surface of the electrode is a silver disk set into the tip of the body. In CO₂ reduction (CO₂RR) research, silver stands out for producing carbon monoxide (CO) with high selectivity; a flat silver disk gives a well-defined surface for comparison with powder catalysts. On the analytical side, it is used for cyanide and sulfide determination.

In this L-shaped model the silver disk sits on the end face of the PTFE body's perpendicular head, so it faces sideways. This suits in-situ Raman cells, where the disk must be close to the window, and photoelectrochemistry, where it faces the light. Disk diameters: Ø2–6 mm. PTFE is inert to nearly all chemicals but soft; handle with care. Other shapes and bodies are on separate pages.

Key Features

L-shaped body: the disk is on the end face of a short perpendicular head; the surface faces sideways, 90° to the body axis
Silver disk: a catalyst surface with high CO selectivity in CO₂ reduction
PTFE body: inert to nearly all acids, bases and solvents; as a soft material (Shore D ≈ 55) it needs care against scratches and dents
Suitable for analytical applications such as cyanide and sulfide determination
Disk diameter options Ø2, 3, 4, 5 and 6 mm
Easy surface renewal with a 1–2 minute alumina polish
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	L-shaped; disk on the end face of a short perpendicular head (faces sideways, 90° to the body)
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
Photoelectrochemistry setups: the disk surface can be turned toward the light source
Cells with an optical window such as in-situ Raman cells: the disk faces the window and sits close to it
Cyanide and sulfide determination
Comparing electrocatalyst surfaces against a flat silver reference surface