Lg Energy Solution, Ltd.

Lg Chem, Ltd

Iucf-hyu

Chul Haeng Lee

Kyoung Ho Ahn

Jeong Woo Oh

Young Min Lim

Sol Ji Park

Won Kyung Shin

Hyun Seung Kim

Yu Ha An

Doo Kyung Yang

Gwang Yeon Kim

Jun Hyeok Han

Jung Min Lee

Yi Jin Jung

Jae Won Lee

Min Jung Kim

Ha Eun Kim

Min Soo Kim

Kyung Mi Lee

Sung Hoon Yu

Yoo Sun Kang

Shul Kee Kim

Byung Chun Park

Jonghyun Chae

Geun Chang Chung

Young Geun Choi

Jong Mo Jung

Je An Lee

Wang Mo Jung

Je Young Kim

Yong Ju Lee

Dong Won Kim

Jung Hoon Lee

Sung Soo Yoon

Seok Koo Kim

Young Bok Kim

Joong Jin Han

Min Ji Kim

Yong Jin Jang

Yo Han Kwon

Sang Hoon Choy

Jeong Ae Yoon

Su Jeong Kim

Won Jae Lee

Hyung Tae Kim

Sung Guk Park

Su Hyeon Ji

Won Tae Lee

Young Cheol Choi

Seung Jae Yoon

Yourim Yoon

Chul Eun Yeom

Hyun Yeong Lee

Jung Gu Han

Young Ho Oh

Jeongwoo Oh

Haeun Kim

Yoon Gyo Cho

Kwan Woo Nam

Yu Ra Jeong

You Kyeong Jeong

Solji Park

Young Mi Seo

Jin Hyun Park

Young Jea Kim

Kyung Ho Ahn

Junhyeok Han

Joo Yul Baek

Yoo Seok Kim

Jeong Ae Ahn

Junghoon Lee

Jun Muk Lim

Jeongae Yoon

Jungmin Lee

Jeong Hwan Koh

Wontae Lee

Yeon Ji Oh

Seung Won Park

Jaewon Lee

Yoosun Kang

Hyun Jik Lee

Suhyeon Ji

Won-Kyung Shin

Youngho Oh

Sujeong Kim

Young Duk Kim

Byung Soo Kang

Dmitry Pogozhev

Jinhyeon Jeong

Yong Joon Ha

Da Ae Lim

Chuleun Yeom

A lithium secondary battery is disclosed herein. The secondary battery has improved high temperature safety and may prevent generation of a large amount of gas under a high temperature condition, which prevents an increase in resistance and a decrease in capacity due to the elution of metal ions from an electrode by uniformly forming a coating film on an electrode surface during activation of the battery. A positive electrode active material of the battery includes a high concentration(s) of nickel and/or manganese and a non-aqueous electrolyte including an additive are used, which improves performance and high-temperature safety of the battery.

Lithium secondary battery with improved safety

The present disclosure provides a non-aqueous electrolyte solution for a lithium secondary battery, and a lithium secondary battery including the non-aqueous electrolyte solution. Specifically, the non-aqueous electrolyte solution for a lithium secondary battery may include a lithium salt, a non-aqueous organic solvent, a first additive comprising a compound represented by Formula 1, at least one second additive selected from the group consisting of vinylethylene carbonate (VEC) and ethyl di(pro-2-yn-1-yl) phosphate (EDP), and at least one third additive selected from the group consisting of a cyclic carbonate compound and a compound represented by Formula 2.

Non-aqueous electrolyte solution for lithium secondary battery, and lithium secondary battery including the same

A lithium secondary battery has excellent economic feasibility and safety because an iron phosphate of Formula 2 having an olivine structure is included as a positive electrode active material, and also has advantages of excellent battery performance and lifespan because an electrolyte additive of Formula 1 having a specific molecular weight is included in an electrolyte to improve an increase in internal resistance of the battery during charging and discharging and effectively prevent iron ions from being exsolved from the positive electrode active material,

Lithium secondary battery with inhibited exsolution of transition metal

A non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In some embodiments, a non-aqueous electrolyte solution for a lithium secondary battery includes a lithium salt, an organic solvent containing a carbonate compound and a propionate compound, a first additive containing a compound represented by the following Formula 1, and a second additive containing 1,3,6-hexanetricarbonitrile, wherein the first additive and the second additive are present in a weight ratio of 1:1.1 to 1:5.5,NC—R—CH═CH—R—CN  [Formula 1]

Non-aqueous electrolyte solution for lithium secondary battery and lithium secondary battery including the same

The present disclosure relates to an electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same. More specifically, the electrolyte solution contains the polymer compound represented by Formula 1, and thus can improve high temperature durability, stability, and lifetime characteristics of the lithium secondary battery.

Electrolyte for lithium secondary battery, and lithium secondary battery comprising same

A lithium secondary battery is disclosed herein. In some embodiments, a lithium secondary battery includes a positive electrode including a lithium transition metal oxide represented by Formula 1, a negative electrode, a non-aqueous electrolyte solution containing a lithium salt, a first non-aqueous solvent, and a second non-aqueous solvent, and a separator, wherein the first non-aqueous solvent is a carbonate-based organic solvent, the second non-aqueous solvent is a fluorine-based organic solvent, and a volume ratio of the first non-aqueous solvent to the second non-aqueous solvent is in a range of 5:5 to 9:1.

Lithium secondary battery

A non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In some embodiments, a non-aqueous electrolyte solution includes a lithium salt, an organic solvent, and a compound represented by Formula 1 as a first additive. A lithium secondary battery including the non-aqueous electrolyte has improved high-temperature storage characteristics.

The present invention relates to a non-aqueous electrolyte comprising a lithium salt; an organic solvent; and a compound represented by Chemical Formula 1, wherein the invention can control moisture in the lithium secondary battery in which the non-aqueous electrolyte is used, suppress by-product formation according to moisture control, and improve the durability of the solid electrolyte layer, thereby improving the durability thereof,

Non-aqueous electrolyte, and lithium secondary battery comprising the same

The present disclosure provides a non-aqueous electrolyte solution for a lithium secondary battery, which may form a robust solid electrolyte interphase (SEI), and a lithium secondary battery in which battery performance is improved by including the same. Specifically, the non-aqueous electrolyte solution for a secondary battery includes a lithium salt, a non-aqueous organic solvent, a first additive, and a second additive, wherein the non-aqueous electrolyte solution for a secondary battery may include an oligomer including a repeating unit derived from a monomer represented by Formula 1 and a repeating unit derived from a monomer represented by Formula 2 as the first additive, and may include at least one selected from the group consisting of a nitrile-based compound, a lithium salt compound, and a cyclic carbonate compound as the second additive.

The present disclosure 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.

A non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery comprising the same are provided. The non-aqueous electrolyte solution for a lithium secondary battery of the present disclosure includes a lithium salt, an organic solvent and a compound represented by Formula 1 as a first additive, thereby improving the high-temperature storage characteristics of the secondary battery:

A non-aqueous electrolyte solution for a lithium secondary battery, and a lithium secondary battery including the same are disclosed herein. In some embodiments, the non-aqueous electrolyte solution for a lithium secondary battery includes a lithium salt, an organic solvent, and a compound represented by the following Formula 1, and has an excellent effect of scavenging decomposition products generated from the lithium salt, and thus, may improve overall performance of the battery:

A non-aqueous electrolyte and a lithium secondary battery including the same are disclosed herein. The non-aqueous electrolyte may be used in a high-voltage battery to achieve excellent life characteristics. In some embodiments, a non-aqueous electrolyte includes an organic solvent, a lithium salt, a compound represented by Formula 1, and a compound represented by Formula 2, wherein, when an amount of the compound represented by Formula 1 is X wt % and an amount of the compound represented by Formula 2 is Y wt % based on a total weight of the non-aqueous electrolyte, X and Y satisfy X+Y≤5 and X≤Y,CN—R—CN  [Formula 1]

Non-aqueous electrolyte for lithium secondary battery and lithium secondary battery including the same

The present invention discloses a copolymer for a polymer electrolyte, and a gel polymer electrolyte and a lithium secondary battery which include the same. Specifically, the present invention discloses a copolymer for a polymer electrolyte, which includes a fluorine-based polymer main chain and a unit derived from an acrylate-based monomer or an acrylate-based polymer containing an ion conductive functional group grafted to the fluorine-based polymer main chain, and a gel polymer electrolyte in which lithium ion transfer capability is improved by including the same. Also, the present invention may prepare a lithium secondary battery with enhanced high-temperature safety by including the gel polymer electrolyte.

Copolymer for polymer electrolyte, and gel polymer electrolyte and lithium secondary battery which include the same

A non-aqueous electrolyte solution and a lithium secondary battery including the same are disclosed herein. In some embodiments, a non-aqueous electrolyte solution includes an organic solvent containing cyclic carbonate, dimethyl carbonate, and a nitrile-based solvent represented by Formula 1, and a lithium salt:R—CN  [Formula 1]

Non-aqueous electrolyte solution and lithium secondary battery comprising same

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Daejeon, South Korea

Chul Haeng Lee