摘要：【中文】本发明公开了一种锂离子电池电解液，包括锂盐、添加剂和非水性有机溶剂，按在锂离子电池电解液中的质量百分含量，所述添加剂组成为：成膜型添加剂1.5‑3.0％，磷酸酯添加剂0.5‑2.0％，具有三氟化硼烃基硫酸锂结构的化合物0.5‑2.0％。本发明还提供含有上述锂离子电池电解液的锂离子电池。本发明通过将三类添加剂的有机组合可以实现在高电压或高镍体系中具有较好的常温和高温循环稳定性，同时电池的阻抗较低，可以实现高低温性能的兼顾。 【EN】The invention discloses a lithium ion battery electrolyte, which comprises lithium salt, an additive and a non-aqueous organic solvent, wherein the additive comprises the following components in percentage by mass in the lithium ion battery electrolyte: 1.5-3.0% of film-forming additive, 0.5-2.0% of phosphate additive and 0.5-2.0% of compound with boron trifluoride hydrocarbyl lithium sulfate structure. The invention also provides a lithium ion battery containing the lithium ion battery electrolyte. According to the invention, the organic combination of the three additives can realize better normal temperature and high temperature cycling stability in a high voltage or high nickel system, and simultaneously, the impedance of the battery is lower, so that the compatibility of high and low temperature performance can be realized.

摘要：【中文】本发明公开了一种锂离子电池电解液，包括锂盐、添加剂和非水溶剂，按在锂离子电池电解液中的质量百分含量，所述添加剂组成为：芳基含硫酯类添加剂0.1‑5％，含磷锂盐类添加剂0.1‑6％。本发明的锂离子电池电解液提高了电池的安全性能和循环稳定性，改善了电池的循环性能和库伦效率。 【EN】The invention discloses a lithium ion battery electrolyte, which comprises lithium salt, an additive and a non-aqueous solvent, wherein the additive comprises the following components in percentage by mass in the lithium ion battery electrolyte: 0.1-5% of aryl sulfur-containing ester additive and 0.1-6% of phosphorus-containing lithium salt additive. The lithium ion battery electrolyte improves the safety performance and the cycling stability of the battery, and improves the cycling performance and the coulombic efficiency of the battery.

摘要：【中文】本发明公开了一种锂离子电池电解液，包括锂盐、非水溶剂和添加剂，按在锂离子电池电解液中的质量百分含量，所述添加剂组成为：芳基含硫酯类化合物0.1‑5％，含硼锂盐0.1‑3％，负极成膜添加剂0.5‑5％。本发明还公开了包括正极、负极、隔膜和该锂离子电池电解液的锂离子电池。本发明的锂离子电池具有循环寿命长和高低温性能好的优点。 【EN】The invention discloses a lithium ion battery electrolyte, which comprises a lithium salt, a non-aqueous solvent and an additive, wherein the additive comprises the following components in percentage by mass in the lithium ion battery electrolyte: 0.1-5% of aryl sulfur-containing ester compound, 0.1-3% of boron-containing lithium salt and 0.5-5% of negative electrode film-forming additive. The invention also discloses a lithium ion battery comprising the anode, the cathode, the diaphragm and the lithium ion battery electrolyte. The lithium ion battery has the advantages of long cycle life and good high-low temperature performance.

摘要：【中文】本发明公开了一种高电压锂离子电池非水电解液，包括非水有机溶剂、电解质和添加剂，按在锂离子电池非水电解液中的质量百分含量，所述添加剂组成为：硅烷基异氰酸酯类添加剂0.1‑5％，低阻抗添加剂0.1‑5％。本发明还公开了包括正极、负极、隔膜和该高电压锂离子电池非水电解液的锂离子电池。本发明的高电压锂离子电池非水电解液通过各组分的协同作用，可以提高锂离子电池的电化学性能，尤其是降低高温下的阻抗和产生气体，大大提高了循环寿命。 【EN】The invention discloses a high-voltage lithium ion battery non-aqueous electrolyte, which comprises a non-aqueous organic solvent, an electrolyte and an additive, wherein the additive comprises the following components in percentage by mass in the lithium ion battery non-aqueous electrolyte: 0.1-5% of silane isocyanate additive and 0.1-5% of low-impedance additive. The invention also discloses a lithium ion battery comprising the anode, the cathode, the diaphragm and the high-voltage lithium ion battery non-aqueous electrolyte. The high-voltage lithium ion battery non-aqueous electrolyte can improve the electrochemical performance of the lithium ion battery through the synergistic effect of the components, particularly reduce the impedance and generate gas at high temperature, and greatly improve the cycle life.

摘要：【中文】本发明公开了一种高电压钴酸锂锂离子电池非水电解液，包括非水有机溶剂、电解质锂盐和添加剂，按在电解液中的质量百分含量，所述添加剂组成为：异氰酸酯类添加剂0.5～1.0％，其它添加剂0.5～20％。本发明还公开了一种高电压钴酸锂锂离子电池。本发明的高电压钴酸锂锂离子电池非水电解液中的异氰酸酯类添加剂能够正极成膜，抑制正极材料遭受电解液中氢氟酸的侵蚀和抑制氢氟酸导致正极材料结构的坍塌和钴离子的溶出，提高高电压钴酸锂锂离子电池的电化学性能。 【EN】The invention discloses a high-voltage lithium cobaltate lithium ion battery non-aqueous electrolyte, which comprises a non-aqueous organic solvent, electrolyte lithium salt and an additive, wherein the additive comprises the following components in percentage by mass in the electrolyte: 0.5-1.0% of isocyanate additive and 0.5-20% of other additives. The invention also discloses a high-voltage lithium cobalt oxide lithium ion battery. The isocyanate additive in the non-aqueous electrolyte of the high-voltage lithium cobalt oxide lithium ion battery can form a film on the positive electrode, inhibit the positive electrode material from being corroded by hydrofluoric acid in the electrolyte, inhibit the positive electrode material structure from collapsing and cobalt ions from dissolving out caused by the hydrofluoric acid, and improve the electrochemical performance of the high-voltage lithium cobalt oxide lithium ion battery.

摘要：【中文】本发明公开了一种三元高电压锂离子电池非水电解液，包括非水性有机溶剂、电解质锂盐和添加剂，按在电解液中的质量百分含量，所述添加剂组成为吡啶三氟化硼0.5～2.0％，其它添加剂8.0～18.0％。本发明还公开了使用该电解液的锂离子电池。本发明通过组合的常规添加剂和新型添加剂PBF共同作用，PBF能在负极材料界面还原，形成优良致密的SEI膜，改善动力学性能。同时该新型添加剂中含有硼元素，而该元素具有未成对空轨道，使得该添加剂能够与正负极界面钝化膜上的LiF进行结合，从而溶解LiF，降低循环过程中电池阻抗的增加。 【EN】The invention discloses a ternary high-voltage lithium ion battery non-aqueous electrolyte, which comprises a non-aqueous organic solvent, electrolyte lithium salt and an additive, wherein the additive comprises 0.5-2.0% of pyridine boron trifluoride and 8.0-18.0% of other additives in percentage by mass in the electrolyte. The invention also discloses a lithium ion battery using the electrolyte. According to the invention, through the combined common action of the conventional additive and the novel additive PBF, the PBF can be reduced at the interface of the negative electrode material, so that an excellent and compact SEI film is formed, and the dynamic performance is improved. Meanwhile, the novel additive contains boron element which has unpaired hollow tracks, so that the additive can be combined with LiF on the passive film of the positive and negative electrode interfaces, LiF is dissolved, and the increase of battery impedance in the circulating process is reduced.

摘要：【中文】本发明公开了一种高电压锂离子电池非水电解液，包括电解质锂盐、非水有机溶剂和添加剂，按在高电压锂离子电池非水电解液中的质量百分含量，所述添加剂组成为：硫系化合物0.5～1.0％，正极保护添加剂0.5～3.0％，负极成膜添加剂0.1～8.0％。本发明还公开了一种高电压锂离子电池。本发明中的高电压锂离子电池非水电解液能够有效抑制金属离子的溶出，减少电解液的分解产气，提高电池在高电压下的循环性能，同时能够降低电池的阻抗，改善锂离子电池的低温性能。 【EN】The invention discloses a high-voltage lithium ion battery non-aqueous electrolyte, which comprises electrolyte lithium salt, a non-aqueous organic solvent and an additive, wherein the additive comprises the following components in percentage by mass in the high-voltage lithium ion battery non-aqueous electrolyte: 0.5 to 1.0% of a sulfur compound, 0.5 to 3.0% of a positive electrode protective additive, and 0.1 to 8.0% of a negative electrode film forming additive. The invention also discloses a high-voltage lithium ion battery. The high-voltage lithium ion battery non-aqueous electrolyte can effectively inhibit the dissolution of metal ions, reduce the decomposition and gas production of the electrolyte, improve the cycle performance of the battery under high voltage, reduce the impedance of the battery and improve the low-temperature performance of the lithium ion battery.

摘要：【中文】本发明公开了一种锂离子电池电解液，包括有机溶剂、电解质锂盐和添加剂，按在锂离子电池电解液中的质量百分含量，所述添加剂组成为：芳基含硫酯类化合物0.1‑5％，硼锂盐0.2‑5％。本发明还公开了包括正极、负极、隔膜和该锂离子电池电解液的锂离子电池。本发明有效解决了锂离子二次电池的循环寿命和安全性较差，以及高电压下的容量衰减问题。 【EN】The invention discloses a lithium ion battery electrolyte, which comprises an organic solvent, electrolyte lithium salt and an additive, wherein the additive comprises the following components in percentage by mass in the lithium ion battery electrolyte: 0.1-5% of aryl sulfur-containing ester compound and 0.2-5% of boron lithium salt. The invention also discloses a lithium ion battery comprising the anode, the cathode, the diaphragm and the lithium ion battery electrolyte. The invention effectively solves the problems of poor cycle life and safety of the lithium ion secondary battery and capacity attenuation under high voltage.