Lg Energy Solution, Ltd.

Yonsei University

Lg Chem, Ltd

Suenghoon Han

Kwonnam Sohn

Doo Kyung Yang

Eunkyung Cho

Eui Tae Kim

Jiwon Kim

Seongji Ye

Moo Whan Shin

Myeong Jun Song

Il To Kim

Jungmi Moon

Jaegil Lee

Kihyun Kim

Soohyun Kim

Taek Gyoung Kim

Changhun Park

Minsu Kim

Dongwook Lee

Yun Kyoung Kim

Seungbo Yang

Eun Kyoung Park

Jangsoo Lee

Seung Yoon Yang

Kyungsik Hong

Jihoon Ahn

Myeongseong Kim

Dongjun Lee

Yunjung Kim

Myeongjun Song

Seonghyo Park

An electrolyte solution for a lithium secondary battery and a lithium secondary battery comprising the same are provided. The electrolyte solution comprises a first solvent comprising a heterocyclic compound containing one or more double bonds and any one of an oxygen atom or a sulfur atom; a second solvent comprising at least one of an ether-based compound, an ester-based compound, an amide-based compound, or a carbonate-based compound; a lithium salt; zirconium oxynitrate; and lithium nitrate.

Electrolyte and lithium secondary battery comprising same

An electrolyte solution for a lithium secondary battery, including a first solvent comprising a heterocyclic compound having at least one double bond, and any one of an oxygen atom and a sulfur atom; a second solvent including at least one of an ether-containing compound, an ester-containing compound, an amide-containing compound, and a carbonate-containing compound; a lithium salt; lanthanum nitrate; and an additive including lithium nitrate.

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

A holey thermally expanded-reduced graphene oxide having high specific surface area and pore volume including pores on the surface, a method for preparing the same, and a sulfur-carbon composite and a lithium secondary battery including the same.

Thermally expanded reduced graphene oxide, manufacturing method therefor, sulfur-carbon composite comprising same, and lithium secondary battery

Disclosed is a modified iron oxyhydroxynitrate including iron oxyhydroxynitrate and hydrogen phosphate ions adsorbed on a surface thereof. Also disclosed is a method for preparing the same, a positive electrode for a lithium secondary battery including the modified iron oxyhydroxynitrate as a positive electrode additive, and a lithium secondary battery including the same.

Iron oxyhydroxynitrate having phosphoric acid anion-adsorbed surface, preparation method therefor, cathode comprising iron oxyhydroxynitrate having phosphoric acid anion-adsorbed surface for lithium secondary battery, and lithium secondary battery comprising same

Disclosed is a separator for a lithium-sulfur battery and a lithium-sulfur battery including the same. In particular, disclosed is a separator for a lithium-sulfur battery including a porous substrate and an inorganic coating layer present on at least one surface of the porous substrate wherein the inorganic coating layer includes a modified montmorillonite substituted with at least one specific ion. The separator may include a uniform inorganic coating layer by including a modified montmorillonite, and thus adsorbs lithium polysulfide, thereby improving the capacity and lifetime characteristics of the lithium-sulfur battery.

Separator for lithium-sulfur battery, and lithium-sulfur battery comprising same

A method for preparing an iron sulfide (FeS) with selective and high purity by a simple process, a positive electrode for a lithium secondary battery including the iron sulfide (FeS) prepared therefrom, which can adsorb the lithium polysulfide produced during the charging and discharging process of the lithium secondary battery, thereby increasing the charging and discharging efficiency of the battery and improving its lifetime characteristics; and a lithium secondary battery provided with the same.

Method for preparing iron sulfide, cathode comprising iron sulfide prepared thereby for lithium secondary battery, and lithium secondary battery comprising same

A carbon-sulfur composite including a carbonized metal-organic framework (MOF); and a sulfur compound introduced to at least a part of an outside surface and an inside of the carbonized metal-organic framework, wherein the carbonized metal-organic framework has a specific surface area of 1000 m/g to 1500 m/g, and the carbonized metal-organic framework has a pore volume of 0.1 cc/g to 10 cc/g, and a method for preparing the same.

Carbon-sulfur composite, preparation method therefor, and lithium secondary battery comprising same

A bipolar lithium secondary battery having a bipolar unit that includes a current collector with positive and negative electrodes formed on opposite sides thereof. The bipolar lithium secondary battery may prevent self-discharging and the generation of bypass currents by separating the electrolyte solutions adjacent to the electrodes having different polarities by a polymer film attached to the edge of the current collector, and by preventing the movement of the separated electrolyte solutions.

Bipolar lithium secondary battery

A sulfur-carbon composite including a porous carbon material; and sulfur coated on at least a portion of an inside and a surface of the porous carbon material, wherein a pore volume of the sulfur-carbon composite is 0.04 to 0.400 cm/g and a specific surface area of the sulfur-carbon composite is 4.0 to 30 m/g, and a method for preparing the same.

Sulfur-carbon composite, preparation method therefor, and lithium secondary battery comprising same

A positive electrode for a lithium secondary battery including a goethite having urchin shape as a positive electrode additive and a lithium secondary battery including the same. If the goethite having the urchin shape is applied to the positive electrode of the lithium secondary battery, there are effects that increase the charging/discharging efficiency of the battery and improve the lifetime characteristics, by adsorbing lithium polysulfide (LiPS) generated during the charging/discharging process of the battery.

Positive electrode comprising goethite for lithium secondary battery and lithium secondary battery comprising same

A positive electrode of a lithium secondary battery including an iron oxide as an additive, and a lithium secondary battery including the positive electrode. In the case of a lithium secondary battery including a positive electrode to which iron oxide is applied, the iron oxide adsorbs the lithium polysulfide (LiPS) generated in the charging/discharging process of the lithium secondary battery, thereby exhibiting an effect of increasing the charging/discharging efficiency of the battery and improving the lifetime characteristics.

Cathode of lithium secondary battery comprising iron oxide, and lithium secondary battery comprising same

A positive electrode active material for a lithium secondary battery, including a sulfur-carbon composite and a coating layer located on a surface of the sulfur-carbon composite and including a carbon nanostructure and iron oxyhydroxynitrate.

Cathode active material for lithium secondary battery

A carbon-sulfur composite including a carbonized metal-organic framework (MOF); and a sulfur compound introduced to at least a part of an outside surface and an inside of the carbonized metal-organic framework, wherein the carbonized metal-organic framework has a specific surface area of 2500 m/g to 4000 m/g, and the carbonized metal-organic framework has a pore volume of 0.1 cc/g to 10 cc/g, and a method for preparing the same.

A method for preparing a sulfur-carbon composite including: (a) stirring a porous carbon material in a solvent mixture including a carbonate-based compound and a volatile solvent and then drying; and (b) mixing the dried porous carbon material with sulfur and then depositing the sulfur in and on the porous carbon material by a heat melting method. A method for preparing a sulfur-carbon composite including: (a) mixing and stirring a porous carbon material and sulfur in a solvent mixture including a carbonate-based compound and a volatile solvent and then drying; and (b) depositing the sulfur in and on the porous carbon material by a heat melting method. In the sulfur-carbon composite, sulfur present in and on the porous carbon material, a proportion of &#x3b2;-monoclinic sulfur phase to sulfur contained in the sulfur-carbon composite is 90% or more based on a total molar ratio of sulfur.

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Daejeon, South Korea

Suenghoon Han