✔ 最佳答案
In the set-up of electrolysis, electrons cannot flow in the electrolyte (aqueous solution or molten liquid), but electrons flow in the external circuit.
At the anode, the anions in the electrolyte lose electrons to the anode. In the external circuit, electrons flow from the anode to the battery, and then to the cathode. At the cathode, the cations gain electrons from the cathode. The above process completes the electron flow.