Titles:
Non-aqueous electrolyte solution and non-aqueous electrolyte secondary battery including the non-aqueous electrolyte solution
非水系電解液及び該非水系電解液を備える非水系電解液二次電池
Abstracts:
PROBLEM TO BE SOLVED: To provide a non-aqueous electrolyte solution capable of suppressing a gas generation amount at a high temperature storage and improving a resistance maintenance rate. A non-aqueous electrolyte solution containing a compound represented by the formula (I) and a fluorinated cyclic carbonate and / or an unsaturated cyclic carbonate. (In the formula, R1 is H, a halogen atom, a silyl group, an acyl group, a sulfonyl group, a sulfonyloxy group, or a phosphate group, and R2 and R5 are independently halogen atoms or hydrocarbon groups, R3. And R4 are independently H, halogen atoms, or hydrocarbon groups.) [Selection diagram] None
Titles:
NON-AQUEOUS ELECTROLYTE AND LITHIUM SECONDARY BATTERY COMPRSING THE SAME
비수 전해액 및 이를 포함하는 리튬 이차전지
Abstracts:
The present invention relates to a non-aqueous electrolyte solution capable of improving the lifespan characteristics of a lithium secondary battery by forming an electrode-electrolyte interface that is stable even at high temperatures and has low resistance, comprising: an organic solvent; lithium salt; and an additive comprising a sulfate-based compound represented by Formula I; and a lithium secondary battery comprising the same.
본 발명은 고온에서도 안정하고 저항이 낮은 전극-전해질 계면을 형성하여 리튬 이차전지의 수명 특성을 향상시킬 수 있는 비수 전해액에 관한 발명으로, 유기 용매; 리튬염; 및 화학식 I로 표시되는 설페이트계 화합물을 포함하는 첨가제;를 포함하는 비수 전해액 및 이를 포함하는 리튬 이차전지에 관한 것이다.
Titles:
A high-nickel high-voltage ternary lithium ion battery non-aqueous electrolyte and lithium ion battery
一种高镍高电压三元锂离子电池非水电解液及锂离子电池
Abstracts:
The invention discloses a high-nickel high-voltage ternary lithium ion battery non-aqueous electrolyte, which includes a non-aqueous organic solvent, an electrolyte lithium salt and an additive. The additive includes at least one imidazole additive with a specific structure. The invention also discloses a lithium ion battery containing the non-aqueous electrolyte of the high nickel and high voltage ternary lithium ion battery. The imidazole additive with a specific structure of the present invention can not only form a film on the surface of the positive electrode material, inhibit the generation of cracks in the positive electrode material particles during the cycle, and reduce the dissolution of transition metal elements at high temperatures; but also can form on the surface of the negative electrode material The SEI film inhibits the reduction reaction of the solvent at the negative electrode interface and reduces the oxidation and decomposition of the electrolyte on the surface of the negative electrode material; at the same time, it can also reduce the interface impedance, thereby effectively improving the cycle performance, high temperature storage performance and low temperature of the ternary high voltage lithium ion battery performance.
