This nonaqueous electrolyte secondary battery is provided with a positive electrode, a negative electrode, and a nonaqueous electrolyte. The nonaqueous electrolyte includes: a nonaqueous solvent including a fluorine-containing cyclic carbonate; a maleimide compound such as N-ethyl maleimide; and a cyclic carboxylic acid anhydride such as diglycolic acid anhydride.
Titles:
ELECTROLYTE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING SAME
리튬 이차전지용 전해액 및 이를 포함하는 리튬 이차전지
Abstracts:
The invention relates to an electrolyte for a lithium secondary battery, the electrolyte comprising an additive capable of preventing a chemical reaction between the electrolyte and an electrode through the formation of a stable SEI film and a protective layer on a surface of the electrode and to a lithium secondary battery having improved lifetime characteristics and high-temperature safety by comprising the electrolyte.
본 발명은 전극 표면 상에 안정적인 SEI 막 및 보호층을 형성하여 전해액과 전극 간의 화학 반응을 방지할 수 있는 첨가제를 포함하는 리튬 이차전지용 전해액과, 이를 포함함으로써 수명 특성 및 고온 안전성이 개선된 리튬 이차전지에 관한 것이다.
Applicant:
LG CHEMICAL LTD [KR]
Inventors:
AHN KYOUNG HO [KR]
JEONG YU RA [KR]
LEE CHUL HAENG [KR]
LIM YOUNG MIN [KR]
OH JEONG WOO [KR]
LEE JUNG HOON [KR]
Titles:
Nonaqueous electrolytic solution and electric storage device using the same
非水系電解液及びそれを用いた蓄電デバイス
Abstracts:
PROBLEM TO BE SOLVED BY THE INVENTION The object of the present invention is to provide an energy device with excellent battery characteristics over an extended period of use with respect to an energy device. SOLUTION: The nonaqueous electrolytic solution of the present invention is a nonaqueous electrolytic solution in which an electrolyte is dissolved in a nonaqueous solvent and contains a cyclic carbonate and a compound represented by the following general formula (1) Based electrolyte solution. (In the formula (1), R 1 to R 3 may be the same or different and each represents an organic group having 1 to 20 carbon atoms which may have a substituent, provided that R 1 to R 3 At least one of them has a carbon-carbon unsaturated bond or a cyano group.) 【Selection drawing】 None
Titles:
Nonaqueous alkali metal type storage element
非水系アルカリ金属型蓄電素子
Abstracts:
PROBLEM TO BE SOLVED: To provide a nonaqueous alkali metal type electric storage element exhibiting excellent low temperature characteristics while adding sufficient high temperature durability necessary for on-vehicle mounting. SOLUTION: By including a specific compound at both the negative electrode and the positive electrode interface and setting the ratio within a certain range, it is possible to prevent the reductive decomposition of the electrolytic solution which may occur at the negative electrode interface and the oxidative decomposition of the electrolytic solution which can occur at the positive electrode interface High input / output characteristics in a wide temperature range, smooth diffusion of alkali metal ions at both positive and negative electrode interfaces, and suppression of gas generation and deterioration of characteristics due to decomposition of electrolytic solution under high temperature environment Compatible nonaqueous alkali metal type storage element. 【Selection drawing】 None
Titles:
Method for producing nonaqueous electrolyte secondary battery
非水電解液二次電池の製造方法
Abstracts:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a non-aqueous electrolyte secondary battery capable of suppressing a decrease in capacity retention rate by sufficiently forming a coating film derived from LiBOB on a negative electrode. A method of manufacturing a secondary battery provided by the present invention comprises the steps of accommodating an electrolytic solution to which an amount of LiBOB exceeding a saturated dissolution amount with respect to a fluorinated solvent is added together with an electrode body in a battery case, And an aging step of maintaining the battery assembly in a voltage range not lower than the decomposition potential of LiBOB and lower than the decomposition potential of the fluorinated solvent by charging the battery assembly while warming the battery assembly . BACKGROUND OF THE INVENTION
