ELECTROLYTE, BATTERY CELL AND PREPARATION METHOD THEREFOR, BATTERY, AND ELECTRICAL APPARATUS

An electrolyte includes a non-aqueous solvent and an electrolyte salt, where the non-aqueous solvent includes ethylene carbonate (EC), and a weight content of the EC in the non-aqueous solvent is denoted by x, based on a total weight of the non-aqueous solvent; the electrolyte salt includes a first electrolyte salt represented by formula (1) and a second electrolyte salt represented by formula (2), and a weight content of the first electrolyte salt in the electrolyte is denoted by y, and a weight content of the second electrolyte salt is denoted by z, based on a total weight of the electrolyte; Rand Reach independently include a fluorine atom or a C1-C6 fluoroalkyl group, Rincludes a fluorine atom or a C1-C6 fluoroalkyl group, and Mand Meach independently include one or more of Li, Na, and K; where 5%≤x≤25%, 0.75≤x/y≤5, and 120≤x/z≤3000.