What are electrolyte additives?

Use of electrolyte additives is one of the most economic and effective methods to tailor the performance of lithium-ion batteries with regard to a desired functionality. In general, the amount of an electrolyte additive is less than 10% either by weight or by volume in order not to change the bulk electrolyte properties. Hundreds of different additives have been reported in the literature and can be classified according to their functionality. Vinylene carbonate (VC) is by far the most widely used and intensively studied film-forming electrolyte additive for graphite-based anodes.