Abstract
Safe lithium ion batteries with long life and high energy density have long been a promising energy storage technology for emerging applications in automobiles and smart grids. Development of functionalized electrolytes is an effective approach to dramatically improve the performance of these batteries. In this chapter, several classes of fluorinated electrolyte components will be introduced and their mechanism to improve the battery performance discussed. The fluorinated compounds include (1) electrolyte additives that form a stable artificial solid-electrolyte interphase, (2) fluorinated redox shuttles for overcharge protection and automatic capacity balance of lithium ion batteries, and (3) fluorinated solvents to enable high voltage cathode materials.
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