Cathode

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A cathode is a negatively charged electrode which attracts cations (positive ions). The cathode can cause a reduction to occur as it is an electron donor. A cathode is often used in juxtaposition to an anode, which is the converse of a cathode. A good example of these two being used together is in gel electrophoresis[1].

Also see anode.

References

  1. Chimed.chem.wisc.edu/chempaths/GenChem-Textbook/Electrolysis-696.html
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