铝集流体的腐蚀是限制氟代磺酰亚胺锂盐在锂离子电池中广泛应用的主要因素。铝集流体在氟代磺酰亚胺锂盐电解液中的腐蚀大致分为两个步骤：首先铝集流体表面的氧化膜遭到破坏，暴露出活性更高的铝层；然后铝在较高的电位下产生的氧化产物溶解到电解液中，造成腐蚀。通过在氟代磺酰亚胺锂盐类电解液中加入含氟添加剂、使用高浓度电解液、改变电解液的溶剂组成和修饰亚胺阴离子结构等方法可抑制铝集流体的腐蚀。

Aluminum current collector is easily corroded,which is the main factor limiting the application of lithium fluorosulfonimide in lithium ion batteries.Approximately,the corrosion of aluminum current collector in lithium fluorosulfonimide based electrolyte consists of two steps:(1)the oxidation film on the surface of aluminum current collector is damaged,leading to exposure of higher-active aluminum layer;(2)the oxidation products generated from aluminum at high electrical potential dissolve into electrolyte,resulting in corrosion of aluminum current collector.The corrosion can be inhibited by adding fluorine-containing additives into lithium fluorosulfonimide based electrolyte,using high concentration electrolyte,changing the solvent composition of electrolyte or modifying the structure of imine anion.

曾双威(1995-),男,硕士生。