公开(公告)号：EP4435921A1

公开(公告)日：2024-09-25

申请号：EP22911650.4

申请日：2022-11-23

申请人： LG Energy Solution, Ltd.

发明人： AN, Yu Ha ,  OH, Jeong Woo ,  LEE, Chul Haeng

IPC分类号： H01M10/0567 ,  H01M4/58 ,  H01M10/052 ,  H01M4/587

CPC分类号： Y02E60/10 ,  H01M4/5825 ,  H01M4/583 ,  H01M50/46 ,  H01M2004/02720130101 ,  H01M2300/002520130101 ,  H01M2300/005120130101 ,  H01M2300/003720130101 ,  H01M10/0569 ,  H01M4/364 ,  H01M2004/02820130101 ,  H01M10/0568 ,  H01M10/0567 ,  H01M4/587 ,  H01M10/052 ,  H01M10/0525 ,  H01M4/525

摘要： The present invention relates to a lithium secondary battery including: a non-aqueous electrolyte including a lithium salt, an organic solvent, a first additive represented by Chemical Formula 1 and a second additive represented by Chemical Formula 2; a positive electrode including a positive electrode active material including a lithium iron phosphate-based composite oxide; a negative electrode including an negative electrode active material; and a separator interposed between the positive electrode and the negative electrode.

公开(公告)号：EP4383397A1

公开(公告)日：2024-06-12

申请号：EP21942141.9

申请日：2021-10-15

申请人： Contemporary Amperex Technology Co., Limited

发明人： HUANG, Lei ,  HAN, Changlong ,  WU, Zeli ,  ZHANG, Cuiping

IPC分类号： H01M10/0569

CPC分类号： Y02E60/10 ,  H01M10/052 ,  H01M10/0569 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/4235 ,  H01M2300/003720130101 ,  H01M2300/00420130101 ,  H01M2300/005120130101 ,  H01M4/5825

摘要： The present application provides an electrolyte solution, a secondary battery, and a power consumption apparatus. The electrolyte solution includes a solvent and an additive; the solvent includes a compound of formula I, and a mass percentage of the compound of formula I in the solvent is 35% or more; in formula I, R1 and R2 are each independently selected from any one of a hydrogen atom, a C1-C3 chain alkyl group, and a C2-C3 alkenyl group; and the additive includes a compound of formula II, and in formula II, R3, R4, and R5 are each independently selected from any one of a hydrogen atom, a fluorine atom, a phenyl group, a cyano group, a C1-C6 chain alkyl group, a C3-C6 cyclic alkyl group, and a C2-C6 alkenyl group. In the present application, good kinetic performance, high-temperature performance and excellent overcharge prevention performance of a battery can be taken into account.