A new battery system based on a two additive electrolyte system containing 2-furanone and method of its process

摘要

A battery system has been developed for lithium ion batteries.An improved battery system comprises a binary additive mixture in an electrolyte solvent.Such a battery system assembles the positive electrode and the negative electrode in the hermetically sealed cell, removes residual water from the hermetically sealed cell, fills the non-aqueous electrolyte in the sealed cell under an inert atmosphere, and seals the sealed cell in vacuum Fabricated by performing a chemical vapor deposition process including charging and discharging a sealed cell until the closed cell reaches an initial capacity.A non-aqueous electrolyte is a second non-aqueous solvent containing lithium ion, a carbonate solvent, and a second non-aqueous solvent comprising methyl acetate The first working additive of either vinylcarbonate or fluoroethylene carbonate and additive mixture of the second working additive of 2-furanone.During the chemical conversion process, gas generation is suppressed in the battery system.Fig. 7 (a)