Lg Energy Solution, Ltd.

Other

Young Ho Oh

Chul Haeng Lee

Kyoung Ho Ahn

Won Kyung Shin

Won Tae Lee

Jun Hyeok Han

Su Hyeon Ji

You Kyeong Jeong

Min Jung Kim

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

The present invention relates to an electrolyte composition including a lithium salt; a non-aqueous organic solvent; a compound represented by a specific formula; and a perfluoropolyether oligomer, a gel polymer electrolyte including a polymer network which is formed by a polymerization reaction of the electrolyte composition, and a lithium secondary battery including the same.

Electrolyte composition, gel polymer electrolyte and lithium secondary battery including the same

An electrolyte composition and a lithium secondary battery including the same are disclose herein. The electrolyte composition has improved high temperature safety. In some embodiments, the electrolyte composition includes an additive including a compound represented by Formula 1. Each Ris independently a single bond, an alkylene group having 1 to 10 carbon atoms, or each Ris independently a double or triple bond including 2 carbon atoms, each Ris independently hydrogen or an alkyl group having 1 to 4 carbon atoms, and a is an integer of 1 to 10. The additive may reinforce an SEI layer on the surface of an electrode, thereby having advantages of improved storage and lifetime characteristics at a high temperature and a decreased amount of gas generated in the battery.

Lithium secondary battery with improved safety

A gel polymer electrolyte composition, a secondary battery including the same, and a manufacturing method of a secondary battery are disclosed. Advantages of the disclosed aspects include increasing process efficiency by reducing the curing time of a gel polymer electrolyte while preventing leakage of an electrolyte.

Gel polymer electrolyte composition attaining shortened crosslinking time, secondary battery comprising same, and manufacturing method for secondary battery

The object of this invention is to provide a hair curling iron having a pair of curling tongs and a heat generating means mounted on the tongs, comprising a tong control unit to control the up and down movement of the curling tongs; a rotary body connected to the tong control unit to rotatably support the tongs; a fixed body to support the rotary body so that the rotary body rotates on its own axis; a drive motor mounted at a predetermined portion of the fixed body to rotate the rotary body; and a drive button to actuate the drive motor.

Growing community of inventors

Daejeon, South Korea

Young Ho Oh