A lithium-ion (Li-ion) battery is a rechargeable energy storage device widely used in consumer electronics, electric vehicles (EVs), renewable energy systems, and industrial applications. It provides high energy density, long cycle life, and efficient power delivery, making it the preferred choice for modern battery technology.

How Does a Lithium-Ion Battery Work?
Charging Phase – Lithium ions move from the positive electrode (cathode) to the negative electrode (anode) through an electrolyte.

Discharging Phase – When in use, lithium ions move back from the anode to the cathode, releasing electrical energy.

Electrolyte Function – The electrolyte facilitates ion movement while preventing short circuits.

Key Features of Lithium-Ion Batteries
✔ High Energy Density – Stores more power in a compact size.
✔ Long Cycle Life – Supports hundreds to thousands of charge-discharge cycles.
✔ Fast Charging – Charges significantly faster than traditional batteries.
✔ Low Self-Discharge Rate – Retains power longer when not in use.
✔ Lightweight Design – Ideal for portable and electric applications.
✔ Eco-Friendly & Reduced Carbon Footprint – Compared to lead-acid batteries.

Applications of Lithium-Ion Batteries
1. Consumer Electronics