Li‐Ion Batteries: Understanding the Outstanding High‐Voltage Performance of NCM523||Graphite Lithium Ion Cells after Elimination of Ethylene Carbonate Solvent from Conventional Electrolyte (Adv. Energy Mater. 14/2021)

In article number 2003738, Martin Winter, Tobias Placke, Johannes Kasnatscheew and co-workers report that a simple elimination of ethylene carbonate (EC) from conventional electrolytes counterintuitively boosts the high voltage performance in Li-ion batteries. It is attributed to the beneficially formed LixPOyFz-species, which can scavenge the hazardous transition metals (Ni, Co, Mn) dissolved from NCM cathodes.