Electrolyte Additive for Lithium Secondary Battery Electrolyte for Lithium Secondary Battery Including the Electrolyte Additive and Lithium Secondary Battery Including the Electrolyte

• Main Authors: KOO HONG JI, JO HA JIN, JUNG CHEOL SOO, KIM YONG EUN, SIM JUN SEOB, YOON YE EUN
• Format: Patent
• Language: English; Korean
• Published: 23.10.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

An additive for a lithium secondary battery electrolyte according to one embodiment of the present invention may include an acrylate-based compound containing an electron attractive group, and the acrylate-based compound containing the electron attractive group may be represented by the following chemical formula 1. [Chemical formula 1] (In the chemical formula 1, R1 is an electron attractive group, R2 is one selected from the group consisting of H, CH_3, C_2H_5, and n is a natural number selected from 1 to 5.) Accordingly, the present invention may induce effective SEI film formation on a carbon-based negative electrode of a lithium secondary battery, thereby improving the performance of the lithium secondary battery. 본 발명의 일 실시예에 따른 리튬 이차전지 전해질용 첨가제는 전자 흡인기를 함유하는 아크릴레이트계 화합물을 포함할 수 있고, 상기 전자 흡인기가 함유된 아크릴레이트계 화합물은 하기 화학식 1로 표시될 수 있다. [화학식 1] JPEGpat00004.jpg3159 (상기 화학식 1 중, R1은 전자 흡인기이고, R2는 H, CH3, C2H5로 이루어진 군에서 선택되는 1종이며, n은 1 내지 5에서 선택되는 자연수이다.)