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Working Electrodes


Product Code C2013F1
Price £190.00

High quality working electrodes including platinum and gold electrodes

Perfect for use in standard cyclic voltammetry electrochemistry cells


Due to their resistance to oxidation in both air and acids, platinum and gold disc working electrodes are widely used in standard cyclic voltammetry electrochemistry cells to investigate the oxidation and reduction potentials of organic and inorganic semiconductors. Organic semiconductors such as polymers in solution can be drop-cast onto the disc to form films, or alternatively the electrochemical cell can be set up to measure the properties of a material in solution. Both platinum and gold disc working electrodes are easy to use and clean.

Solvent and acid resistant working electrodes are now available to buy with either a highly polished platinum (included with our potentiostat system for cyclic voltammetry) or gold disc embedded in polytetrafluoroethylene (PTFE) plastic bodies.

Working Electrodes available at Ossila


Platinum Disc Working Electrode

(1mm, 2mm, 3mm and 4mm in diameter)

Platinum Disc Working Electrode

From £163.00

Gold Disc Working Electrode

(2mm in diameter)


Gold Disc Working Electrode

From £163.00

Glassy Carbon Working Electrode

(3mm and 4mm in diameter)


Glassy Carbon Working Electrode

From £190.00

L-Shaped Glassy Carbon Working Electrode

(3mm and 4mm in diameter)


L-Shaped Glassy Carbon Working Electrode

From £260.00

Graphite Working Electrode

(2mm, 3mm, and 4mm in diameter)

Graphite Working Electrode

From £80.00

Platinum Plate Working Electrode

(10*10*0.1mm)


Platinum Plate Working Electrode

From £240.00

Platinum Working Electrode Holder

(10*15mm, suitable for holding ITO, FTO electrodes)

Platinum Working Electrode Holder

From £210.00


Save 5% and 10% per electrode when you buy packs of five and ten respectively or get three electrodes and cell glassware with an electrochemical cell kit.

Net electrodes and L-shape platinum electrodes of different sizes are also available to our customers upon request. Please contact us for more details.

The working electrode is probably the most important component of an electrochemical cell: the working electrode is where the electrically driven chemical reaction and electron transfer happens.

Platinum, gold, carbon and mercury are the most commonly used materials but being electrochemically inert and easy to be fabricated into many forms, platinum is often preferred. Gold electrodes are less tolerant to oxidation in the positive potential range, but good to form self-assembled monolayer on its surface while carbon electrodes are more tolerant to more negative potentials.

Redox Reactions

Redox reactions, also referred to as oxidation-reduction reactions, involve the loss or gain of electrons. The loss of electrons is called oxidation and the gain of the electrons reduction.

Oxidation could happen onto the working electrode if the working electrode of the electrochemical cell is driven to a relatively positive potential to the reference electrode. However, while a negative potential is applied to the working electrode, it will result into a reduction reaction. When the potential reaches to a point where an oxidation or reduction is induced, current starts to flow.

The potential of this point is referred to as the onset oxidation or reduction potential (Eonset), shown below where Epa is the anodic peak potential, Epc is the cathodic peak potential and E1/2 is the half-wave potential [E1/2 = (Epa + Epc)/2].

When the applied potential rises through the half-wave potential, oxidation becomes thermodynamically favourable as the current also continues to increase. The oxidation process, however, becomes limited by rate of diffusion process to the electrode surface, characterised by a drop of the current resembling a duck beak.

The potential sweep of the electrode is then reversed and scanned in the opposite direction until the initial potential is reached. For a chemically reversible charge transfer process, the reversed potential sweep gives the rise of the cathodic peak potential passing the half-wave potential by the  reduction of the electrochemically generated species from the first half sweep.

The reversed potential sweep is mostly associated with a reductive (negative) current.

Ferrocene oxidation
Voltammogram of a single electron oxidation-reduction
Find out more about cyclic voltammetry

Specifications

All dimensions are in millimetres.

Platinum Disc Working Electrode

Platinum Working Electrode Dimensions
Platinum Working Electrode Dimensions (mm)

Available disc sizes in diameter (n) 1 mm, 2 mm, 3 mm, 4 mm.

 Purity 99.99%

Gold Disc Working Electrode

Gold Working Electrode Dimensions
Gold Working Electrode Dimensions (mm)

Available disc sizes in diameter (n) 2 mm. Other disc sizes (0.5 mm, 1 mm, 3 mm, 4 mm) are available on demand. Please contact us for more details.

 Purity 99.99%

Platinum Plate Working Electrode

Platinum Plate Working Electrode Dimensions
Platinum Plate Working Electrode Dimensions (mm)

L-Shaped Glassy Carbon Working Electrode

L-Shaped Glassy Carbon Working Electrode Dimensions
L-Shaped Glassy Carbon Working Electrode Dimensions (mm)

Available disc sizes in diameter (n) 3 mm, and 4 mm.

Glassy Carbon Working Electrode

Glassy Carbon Working Electrode Dimensions
Glassy Carbon Working Electrode Dimensions (mm)

Available disc sizes in diameter (n) 3 mm, and 4 mm.

Graphite Working Electrode

Graphite Working Electrode Dimensions
Graphite Working Electrode Dimensions (mm)

Available disc sizes in diameter (n) 2 mm, 3 mm, and 4 mm.

Platinum Sheet Working Electrode Holder / Exchangable Platinum Electrode

Platinum Sheet Working Electrode Holder
Platinum Sheet Working Electrode Holder Dimensions (mm)

Pricing and Options

Product Name Product Code Price
Platinum Disc Working Electrode - 2mm dia. - Single C2013A1 £163.00
Platinum Disc Working Electrode - 2mm dia. - Pack of 5 C2013A1-5 £774.00
Platinum Disc Working Electrode - 2mm dia. - Pack of 10 C2013A1-10 £1,460.00
Gold Disc Working Electrode - 2mm dia. - Single C2013B1 £163.00
Gold Disc Working Electrode - 2mm dia. - Pack of 5 C2013B1-5 £774.00
Gold Disc Working Electrode - 2mm dia. - Pack of 10 C2013B1-10 £1,460.00
Platinum Disc Working Electrode - 1mm dia. C2013C1 £126.00
Platinum Disc Working Electrode - 3mm dia. C2013D1 £202.00
Platinum Disc Working Electrode - 4mm dia. C2013E1 £283.00
Glassy Carbon Working Electrode - 3mm dia. C2013F1 £190.00
Glassy Carbon Working Electrode - 4mm dia. C2013G1 £210.00
L-Shaped Glassy Carbon Working Electrode - 3mm dia. C2013H1 £260.00
L-Shaped Glassy Carbon Working Electrode - 4mm dia. C2013J1 £290.00
Graphite Working Electrode - 2mm dia. C2013K1 £80
Graphite Working Electrode - 3mm dia. C2013L1 £85
Graphite Working Electrode - 4mm dia. C2013M1 £120
Platinum Plate Working Electrode - 10*10*0.1mm C2013N1 £240
Platinum Working Electrode Holder - 10*15mm C2013P1 £210

To the best of our knowledge the information provided here is accurate. However, Ossila assume no liability for the accuracy of this page. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. All products are for laboratory and research and development use only, and may not be used for any other purpose including health care, pharmaceuticals, cosmetics, food or commercial applications.

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