Lithium-ion batteries are high-performance rechargeable power sources that have become essential in our modern lives. They are widely used in portable electronics, electric vehicles, and renewable energy systems due to their high energy density, long lifespan, and fast charging capabilities. These batteries consist of a lithium-based compound as the cathode, a carbon-based material as the anode, and an electrolyte that allows the flow of lithium ions between the electrodes. This electrochemical process enables the storage and release of electrical energy.