We just learned that an electrode is pretty much just a wire
that has electricity going through it.
If you look closely on a battery, you should see a plus (+) and minus (-) sign.
This is for the positive (+) and negative (-) parts of the battery.
When you hook a wire up to both ends of the battery, that wire is an electrode.
The wire touching the negative (-) part of the battery is called the anode,
and the wire touching the positive (+) part of the battery is called the cathode.
Those words really just mean which way the electricity is flowing.
(from: wikipedia - rechargable battery)
Electrons are negatively charged, and the electrical current
flows from the negative (-) anode to the positive (+) cathode.