ELECTROLYTE SOLUTION AND LITHIUM-ION BATTERY

Disclosed are an electrolyte solution and a lithium-ion battery. The electrolyte solution includes a first additive, a second additive, and a third additive; the first additive includes a silane compound; the second additive includes a polycyclic compound; the third additive includes lithium difluoro(oxalato)borate. Through synergistic interactions between additives, the electrolyte solution enhances cell and safety performance while maintaining long cycle life and low-expansion performance.