Lg Chem, Ltd

Lg Energy Solution, Ltd.

Yoo Sun Kang

Sung Hoon Yu

Kyung Mi Lee

Chul Haeng Lee

Jung Hoon Lee

Doo Kyung Yang

Hyun Yeong Lee

Sol Ji Park

Jae Won Lee

Jung Don Suk

Jin Hyun Park

Jeong Woo Oh

Sun Sik Shin

Song Taek Oh

Shul Kee Kim

An electrolyte solution additive for a lithium secondary battery, a non-aqueous electrolyte solution for a lithium secondary battery comprising the same, and a lithium secondary battery are described. Specifically, the electrolyte solution additive for a lithium secondary battery may comprise a compound represented by Formula 1,

Alkynated and methyl sulfonated imidazoline non-aqueous electrolyte additive and nonaqueous electrolyte solution for lithium secondary battery including the same and lithium secondary battery

An electrolyte solution additive, an electrolyte solution including the same, and a lithium secondary battery including the same are disclosed herein. In some embodiments, an electrolyte solution additive includes a compound represented by Formula 1: Wherein X is oxygen (O) or sulfur (S), and R is a substituted or unsubstituted alkyl group having 1 to 5 carbon atoms or N(R), wherein Ris hydrogen or a substituted or unsubstituted alkyl group having 1 to 5 carbon atoms. The additive has an excellent effect of scavenging a decomposition product generated from a lithium salt and simultaneously forming a robust film on a surface of a positive electrode.

Electrolyte solution additive for secondary battery, and non-aqueous electrolyte solution for lithium secondary battery and lithium secondary battery which include the same

A non-aqueous electrolyte solution for a lithium secondary battery includes a compound represented by Formula 1 as follows, a lithium salt, and an organic solvent; and a lithium secondary battery including the same: wherein R1 to R3, L1 and Aare described herein.

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

A non-aqueous electrolyte for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In some embodiments, a non-aqueous electrolyte for a lithium secondary battery includes an organic solvent, a lithium salt, and a compound represented by Formula 1. In some embodiments, the compound represented by Formula 1 is present in an amount of 0.5 part by weight to 5 parts by weight based on 100 parts by weight of the non-aqueous electrolyte.

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

A method of activating a secondary battery includes an operation of deriving a reduction reaction voltage according to an electrolyte additive, a pre-charging operation of pre-charging the secondary battery into which an electrolyte containing the electrolyte additive is injected, and a pre-aging operation of wetting an electrode assembly accommodated in the secondary battery with the injected electrolyte and aging the electrode assembly. A charging termination voltage in the pre-charging operation is less than the reduction reaction voltage.

Secondary battery activation method

The present invention relates to a non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same, and particularly, to a non-aqueous electrolyte solution for a lithium secondary battery which includes a fluorine-containing compound capable of forming a stable film on the surface of an electrode as an additive, and a lithium secondary battery including the same.

An additive, a non-aqueous electrolyte for a lithium secondary battery including the same, and a lithium secondary battery including the same are disclosed herein. In some embodiments, an additive includes at least one compound selected from the group consisting of the compounds represented by Formula 1 and Formula 2. In some embodiments, a non-aqueous electrolyte includes a lithium salt, an organic solvent, and an additive including at least one compound selected from the group consisting of the compounds represented by Formula 1 and Formula 2.

Additive, non-aqueous electrolyte for lithium secondary battery including the same, and lithium secondary battery including the non-aqueous electrolyte

The present disclosure relates to a gel polymer electrolyte including an imide salt, and a lithium secondary battery including the same and having a protective film formed on a cathode tab. Disclosed are a gel polymer electrolyte that allows the production of a secondary battery having excellent quality with no corrosion of a cathode, while using, as an electrolyte, an imide-based salt effective for improvement of output quality and high-temperature storability, as well as a secondary battery including the same.

Gel polymer electrolyte and lithium secondary battery comprising the same

The present invention relates to an additive for a non-aqueous electrolyte solution, which may suppress the generation of metallic foreign matter causing a side effect in a battery while forming a stable film on the surface of an electrode, a non-aqueous electrolyte solution for a lithium secondary battery which includes the additive, and a lithium secondary battery including the non-aqueous electrolyte solution.

Alkynyl-containing compound additive for non-aqueous electrolyte solution, and non-aqueous electrolyte solution for lithium secondary battery and lithium secondary battery which include the same

The present invention relates to a non-aqueous electrolyte solution for a lithium secondary battery, which includes a compound capable of suppressing an electrolyte solution side reaction in a high-temperature and high-voltage environment, and a lithium secondary battery in which cycle characteristics and stability are improved even during high-temperature and high-voltage charging by including the same.

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

The present invention may improve the lifetime characteristics of a lithium secondary battery, and particularly, may provide a non-aqueous electrolyte solution or cathode including a phosphate-based compound which may exhibit stable and excellent lifetime characteristics at high temperature and high voltage regardless of the moisture content or the presence of a pressing process of the electrode.

Lithium secondary battery

The present invention relates to an additive for a non-aqueous electrolyte solution including a compound represented by Formula 1 below, a non-aqueous electrolyte solution for a lithium secondary battery including the same, and a lithium secondary battery including the non-aqueous electrolyte solution.NC&#x2014;(R)&#x2014;CN&#x2003;&#x2003;[Formula 1]

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

The present invention relates to: a non-aqueous electrolyte additive comprising, as a substituent, at least one cyano group and/or at least one fluorine element; a non-aqueous electrolyte for a lithium secondary battery, comprising the same; and a lithium secondary battery including the non-aqueous electrolyte.

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

Provided are a lithium secondary battery including a cathode, an anode, a separator, and a gel polymer electrolyte, wherein i) the anode includes a silicon (Si)-based anode active material, ii) the gel polymer electrolyte is formed by polymerizing a composition that includes a monomer having a functional group bondable to metal ions, and iii) a charge voltage of the battery is in a range of 3.0 V to 5.0 V. Since the lithium secondary battery of the present invention may prevent the movement of metal ions dissolved from a cathode to an anode or reduce the precipitation of metal on the anode, the lifetime of the battery may not only be improved but capacity characteristics of the battery may also be excellent even in the case in which the battery is charged at a high voltage as well as normal voltage.

Growing community of inventors

Daejeon, South Korea

Yoo Sun Kang