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Laboratory Electrodes
These electrodes are ideal for electricity and electrochemistry experiments.
Aluminum Electrode, Flat (strip), approx.
24 mm wide, 124 mm (4.9 inches) long, and just under 0.7 mm thick.#C541.............$1.39 each
Carbon Electrode, Flat, approx. 18 mm wide
x 126 mm (5 inches) long x 5 to 6 mm thick. Carbon electrodes are
resistant to chemical attack and can substitute for platinum in many situations,
though carbon may erode faster in severe conditions. Important: These are not
always cut to a consistent size. Electrodes may vary in size and
shape, though they are roughly rectangular.#C543.............$3.99 each
For larger carbon plate electrodes, consider our carbon blocks. These are very durable, have a large surface area, and can withstand high temperatures.
Carbon Electrode, Round (Pencil type).
Approx. 6.5 mm (1/4") dia. x 126 mm (5 inches) long. #C551 ...... $2.29 each
Copper Electrode, Flat (strip), approx. 19
mm (3/4 inch) wide x 126 mm (5 inces) long x 1 mm thick.#C544 ........$2.19 each
Iron Electrode, Flat (strip), approx. 19 mm
(3/4 inch) wide x 126 mm (5 inches) long x 1.2 mm thick. These
arrive with a coating of grease to prevent rust; they must be de-greased
prior to use. After using, they should be cleaned and re-coated with
grease for storage, or else they will rust.#C545...........$1.49 each
Nickel Electrode, Flat (strip), approx. 19
mm (3/4 inch) wide x 126 mm (5 inches) long x 0.5 mm thick. Nickel
electrodes produce soluble Ni compounds (toxic) under some conditions;
be sure you're prepared to handle these.#C548..............$5.49 each
Tin Electrode, Flat (strip), approx.
19 mm (3/4 inch) wide x 126 mm (5 inces) long x 1 mm thick.#C549..............$4.49 each
Zinc Electrode, Flat (strip), approx. 19 mm
(3/4 inch) wide; 126 mm (5 inches) long; 1.1 mm thick. Zinc electrodes
acquire a film of oxidation readily in the air. They should be
cleaned prior to use. Note that acidic solutions will attack the
zinc vigorously and eat away the electrode.#C547.............$2.19 each
Electrochemical series (Order of reactivity). Higher in list = higher reactivity and more negative reduction potential.
Al - Aluminum
Zn - Zinc
Fe - Iron
Ni - Nickel
Sn - Tin
Cu - Copper
Notice that carbon doesn't really fit on this list when we're talking about aqueous electrochemistry (in other words, the typical electrolysis cell). Carbon, unlike the metals, does not actually go into solution as ions, nor can it be "plated out" from solution. Instead it erodes away as fine particles of solid carbon that settle to the bottom.
Wear gloves when handling electrodes; stamped metal may have sharp corners and / or edges. If you want to make the edges and corners smoother, use medium to fine sandpaper.
Also be sure to wear safety goggles during all experiments.
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