How does a cathode work?

Question

Cathodes work using "reduction," right? By what mode of action is it able to take things? For example, in a battery, the anode is giving up a pair of electrons to sulfuric acid, and I suppose the cathode is doing the opposite by taking the electrons?

Answer 1

You are correct about the electrical charge anode give up electrons, cathodes take up electrons.
When I worked in a nickel refinery, an Nickel sulfide anode dissolved and pure nickel was plated on the cathode. There was a purification process involved but doesn't matter in the explanation