Advances and Challenges in Lithium-Ion Battery Technology

Electrochemical energy storage devices are classified into various types based on their operational mechanisms, including capacitors, supercapacitors, batteries, and fuel cells. All battery systems consist of core components such as an anode, a cathode, an aqueous or non-aqueous electrolyte, and a membrane that separates the electrodes while allowing ion transfer. Lithium-ion batteries, which are integral to modern electronic devices and electric vehicles, have attracted significant attention recently. They store and deliver energy through the insertion and extraction of lithium ions within the electrode materials during repeated charging and discharging cycles. The performance of these batteries is primarily determined by their energy and power densities. To enhance their energy capacity, power output, and cycle life, careful selection of electrode materials and electrolytes is essential. Cathode materials store energy via intercalation or conversion reactions, whereas anode materials utilize intercalation, conversion reactions, or alloying/dealloying processes. The specific mechanisms involved depend on the electrode material, directly influencing battery performance. Each class of electrode materials offers distinct advantages and limitations; thus, selecting appropriate materials is crucial for the practical application of lithium-ion batteries. This review discusses the fundamental principles of energy storage in lithium-ion batteries, the mechanisms associated with electrode materials, recent technological advances, and the challenges faced in improving lithium-ion battery performance.

کلیدواژه ها:

Lithium ion batteries ، Anode ، Cathode ، Mechanism ، Performance