Electrochemical systems are setups that convert chemical energy into electrical energy or vice versa through redox reactions. These systems typically involve electrodes, electrolytes, and a conductive medium, allowing for the flow of electrons and ions. Common examples include batteries and fuel cells, which are used in various applications, from powering electronic devices to electric vehicles. In an electrochemical system, the anode and cathode play crucial roles. The anode is where oxidation occurs, releasing electrons, while the cathode is where reduction takes place, accepting electrons. The movement of ions through the electrolyte completes the circuit, enabling the system to function effectively.