Used primarily in lithium-ion batteries as a key component of the electrolyte solution. It enables efficient ion transport between the anode and cathode, ensuring high conductivity and stable battery performance. Its application is critical in portable electronics, electric vehicles, and energy storage systems due to its ability to function well within a wide temperature range and support high energy density. However, it is sensitive to moisture, which can lead to the generation of harmful byproducts, so it must be handled in dry environments. Ongoing research focuses on improving its thermal stability and reducing its reactivity with water for safer battery operation.