Hyundai Motor Company

Kia Corporation

Kia Motors Corporation

Unist (ulsan National Institute of Science and Technology )

The Industry & Academic Cooperation in Chungnam National University (iac)

Industry-university Cooperation Foundation Hanyang University

Ulsan National Institute of Science and Technology

Sejong University

Jun Ki Rhee

Yoon Sung Lee

Ko Eun Kim

Seung Min Oh

Sung Ho Ban

Nam Soon Choi

Sang Kyu Kwak

Sung You Hong

Hyeong Jun Kim

Sam Ick Son

Hyeon Gyu Moon

Ho Taek Lee

Yoon Ji Lee

Woo Young Jin

Hui Beom Nam

Yun Seok Kim

In Woo Song

Sang Mok Park

Ji Eun Lee

Dong Hui Kim

Hee Yeon Ryu

Kyoung Han Ryu

Se Young Lee

Seung Wan Song

Seo Young Jeong

Gyeong Jun Chung

Min Pyeong Kim

Min Ho Jeon

Jae Seung Lee

Min Soo Kim

Sang Shin Lee

Sang Hun Lee

Ki Chun Lee

Dong Won Kim

Hee Jin Woo

Hyun Sik Woo

Dae Yeon Hwang

Min Young Shin

Dong Kyu Shin

Hee Jae Kim

Seung Taek Myung

Dong Gyun Kang

Woo Gyum Kim

Disclosed herein are an electrolyte for a lithium secondary battery, which can enhance lifetime and output characteristics in a high-capacity lithium secondary battery, and a lithium secondary battery including the same. The electrolyte for a lithium secondary battery may include a lithium salt, a solvent, and a functional additive, wherein the functional additive includes 5,5-diallyl-3-(tert-butyldimethylsilyl)oxazolidin-2-one as a positive electrode film additive.

Electrolyte solution for a lithium secondary battery and a lithium secondary battery including same

An electrolyte for a lithium secondary battery can enhance lifetime and output characteristics in a high-capacity lithium secondary battery. The electrolyte for a lithium secondary battery includes a lithium salt, a solvent, and a functional additive. The functional additive includes 1-(3-((tert-butyldimethylsilyl)oxy)propyl)-5-(4-fluorophenyl)-1H-1,2,3-triazole-4-carbonitrile as a positive electrode film additive.

The present disclosure provides an electrolyte for a lithium secondary battery capable of improving the lifespan characteristics and output characteristics of a high capacity lithium secondary battery and a lithium secondary battery including the same. The electrolyte for a lithium secondary battery, according to an embodiment of the present disclosure, is an electrolyte for a lithium secondary battery including a lithium salt, a solvent, and a functional additive agent, in which the functional additive agent includes a cathode film additive agent, (4-allyl-2-methoxyphenoxy) trimethylsilane, represented by the following formula:

Electrolyte solution for lithium secondary battery and lithium secondary battery including same

An additive for an electrolyte solution improves the electrochemical properties of a lithium secondary battery.

Disclosed are an electrolyte solution and an additive thereof, which may improve electrochemical properties of a lithium secondary battery.

Electrolyte solution for lithium secondary battery and lithium secondary battery including the same

Disclosed is a positive electrode material for a lithium secondary battery. The positive electrode material includes a positive electrode active material formed of Li—[Mn—Ti]-M-O-based material including a transition metal (M) to enable reversible intercalation and deintercalation of lithium and molybdenum oxide. The positive electrode active material is coated with the molybdenum oxide to form a coating layer on a surface thereof.

Positive electrode material for lithium secondary battery and lithium secondary battery including same

A method of mixing a cathode active material in a process of manufacturing a cathode of a lithium secondary battery is provided. The method includes a preparation step of preparing a lithium compound removal solution in which PAA (polyacrylic acid) is mixed with a solvent, a removal step of reacting the lithium compound removal solution with the cathode active material, on a surface of which a lithium compound is present, thus removing the lithium compound present on the surface of the cathode active material, and a mixing step of mixing the cathode active material, which is mixed with the lithium compound removal solution, with a conductive material and a binder.

Method of mixing cathode active material

The electrolyte for a lithium secondary battery includes: a lithium salt; a solvent; and a functional additive, wherein the functional additive includes: at least one high-voltage additive selected from a group consisting of lithium bis(phthalato)borate, represented by the following formula 1; hexafluoroglutaric anhydride, represented by the following formula 2; and phosphoric acid tris(2,2,2-trifluoroethyl)ester, represented by the following formula 3:

Electrolyte for lithium secondary battery and lithium secondary battery comprising same

The electrolyte solution for a lithium secondary battery includes: a lithium salt; a solvent; and an anode additive including 5-(4-cyanophenyl)-1-(4-fluorobenzyl)-1H-1,2,3-triazole-4-carbonitrile represented by Chemical Formula 1 below:

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

Disclosed are a positive electrode for lithium air batteries with excellent stability, a method of manufacturing the same, and a lithium air battery including the same, and a lithium air battery with improved stability by including the positive electrode. The positive electrode may include a conductive material and an ionic liquid such that the process of manufacturing the lithium air battery may be simplified, and the stability of the lithium air battery may be further improved as the result of inhibition of side reactions.

Positive electrode for lithium air batteries with excellent stability, method of manufacturing the same, and lithium air battery including the same

The present disclosure relates to a gel polymer electrolyte for a lithium-air battery containing a zwitterion salt in a specific amount and to a lithium-air battery including the same and thus having a prolonged battery lifetime, thereby suppressing volatilization of the electrolyte and imparting the lithium-air battery with interfacial stability by inhibiting the formation of dendrites at a lithium anode and suppressing side reactions between the lithium anode and the liquid electrolyte. Moreover, the use of the zwitterion salt can improve the lithium-ion transference number, thereby increasing the lifetime of the battery.

Gel polymer electrolyte for lithium-air battery containing zwitterion salt and lithium-air battery comprising same

Disclosed are an electrolyte membrane for a lithium air battery having good durability, a method of manufacturing the same, and a lithium air battery including the same. The electrolyte membrane for a lithium air battery may include a reinforced membrane and an electrolyte solution and is thus nonvolatile and capable of ensuring sufficient physical strength.

Electrolyte membrane for lithium air battery having good durability, method of manufacturing same and lithium air battery including same

A lithium air battery comprising a plurality of unit cells which have different diameters, each unit cell comprises: electrodes including: a disc-shaped positive electrode having a first air flow path passing through the positive electrode in a vertical direction of the lithium air battery and one or more electrolyte flow paths on the positive electrode in a horizontal or vertical direction of the lithium air battery; and an negative electrode having a second air flow path passing through the negative electrode in the vertical direction to coincide with the first air flow path; and a separator disposed between the positive electrode and the negative electrode. The unit cells are stacked in the vertical direction within a stack cell tank such that a diffusion layer is disposed between the respective unit cells. A lowermost unit cell has the greatest diameter and diameters of the remaining unit cells, which are sequentially stacked on a lowermost unit cell, gradually decreases vertically in an upward direction so that the unit cells have a stepped structure.

Lithium air battery

A lithium-air battery system using a vortex tube is provided, in which the vortex tube is connected to an oxygen supply port of a lithium-air battery having a stack form. A high-temperature gas generated in the vortex tube is supplied to the lithium-air battery to induce a stimulating reaction and simultaneously, a low-temperature gas generated in the vortex tube is supplied to a cooling path in the lithium-air battery to realize efficient cooling of the lithium-air battery.

Lithium-air battery system using vortex tube

A lithium air battery is provided. The lithium air battery prevents the depletion of electrolyte and includes a separation membrane which contacts an electrolyte stored in an electrolyte tank through a gasket which contacts an outer surface of a unit cell. Therefore, when the electrolyte of the lithium air battery is volatilized, the electrolyte is supplied to the inside of the lithium air battery from the electrolyte tank through the separation membrane.

Lithium air battery capable of preventing electrolyte shortage

Growing community of inventors

Gyeonggi-do, South Korea

Jun Ki Rhee