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.
Also see anode.
- ↑ Chimed.chem.wisc.edu/chempaths/GenChem-Textbook/Electrolysis-696.html