Graphene BMM EC 7mm x 7mm - Graphene Bottom Magnetic Mount Electrochemical Cell
This is a stationary solution voltammetry cell for measurements of the monolayer GRAPHENE on 7x7 mm2 SiC substrate. The sample is loaded from the bottom via magnetic mount, while counter or/and reference electrodes are mounted in a top casing (either 2-, or 3-electrode setup). The cell elements are constructed with materials that are inert to the sample (glass and PEEK). It well fits aqueous (EPDM 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.
Another version of this cell equipped with classical screw mount instead of magnets is available here.
The reference electrode tip should be placed close to the GRAPHENE surface. This will ensure a negligible potential drop throughout the electrolyte solution for low-current experiment. 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. For troubleshooting instruction see the redox.me blog post.
nominal exposure area: 0.2 cm2
minimum electrolyte volume: 2.5 mL
maximum electrolyte volume: 15 mL
electrode plug diameter: 6 mm
substrate size: 7 mm x 7 mm
substrate thickness: 0.5 mm
Monolayer Graphene on SiC - 7 mm x 7 mm
Metal Wire Auxiliary Electrode - 50HX15 0.6/250 mm
Metal Wire Auxiliary Electrode - ST 0.6/custom
Silver Chloride Reference Electrode - 70mm
Graphite rod electrode - GR 6/70 mm