Ion transport refers to the process of charged ions migrating in the electrolyte or electrode material during the operation of a battery. It is one of the core mechanisms of battery energy conversion, directly affecting the charging and discharging speed, efficiency, thermal management, and cycle life of the battery.
Operation Principle:
In a lithium-ion battery:
During charging: lithium ions are released from the positive electrode, pass through the electrolyte, migrate to the negative electrode, and embed in it;
During discharging: lithium ions are released from the negative electrode and return to the positive electrode;
Throughout the process, electrons flow in the external circuit, while ions flow in the internal circuit (inside the battery), and both work together to complete the energy exchange.
