1 results about "Ethoxy Compounds" patented technology

A secondary battery and an electrical apparatus. The secondary battery comprises a positive electrode, a negative electrode, and an electrolyte. The electrolyte comprises an ethoxy-containing additive and a nitrogen-containing additive. In a solid electrolyte interphase film, 3≤2WO+WN≤10. By controlling the type of the electrolyte in the secondary battery, and controlling the contents of nitrogen and oxygen elements in the solid electrolyte interphase film formed on the surface of a negative electrode active material layer to be within a specific range, a nitrogen-containing compound and an ethoxy-containing compound achieve a structurally synergistic effect, which improves the fast charging performance and low-temperature performance of the battery, suppresses the fracture of the SEI film during a high-temperature cycling process, and further prolongs the cycle performance of the secondary battery, especially the cycle life and storage performance at high temperatures.