Lg Energy Solution, Ltd.

Sogang University Research Foundation

Lg Chem, Ltd

Seungbo Yang

Doo Kyung Yang

Kihyun Kim

Kwonnam Sohn

Jun Hyuk Moon

Jangsoo Lee

Donghee Gueon

Soohyun Kim

Eunkyung Cho

Jieun Song

Suenghoon Han

Bong Soo Kim

Minsu Kim

Dongseok Shin

Jaehyun Lee

Jeong Tae Hwang

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

A functional separator capable of improving the capacity and lifetime of a battery by coating a material capable of reducing lithium polysulfide on a separator surface in order to resolve the problems caused by leaching of lithium polysulfide, a preparation method thereof and a lithium secondary battery including the same. The functional separator includes a base separator; a conductive carbon layer on the surface of the base separator; and a metal oxide formed on at least one of an interior and the surface of the conductive carbon layer.

Functional separator, manufacturing method therefor, and lithium secondary battery comprising same

A separator for a lithium-sulfur battery and a lithium-sulfur battery including the same is provided. More particularly, a separator for a lithium-sulfur battery including a porous substrate; and a coating layer present on at least one surface of the porous substrate, wherein the coating layer includes a polymer and a graphitic carbon-based compound, wherein the polymer includes a main chain with a functional group having a non-covalent electron pair present in the main chain and a side chain with an aromatic hydrocarbon group present in the side chain.

Separator for lithium-sulfur battery and lithium-sulfur battery including same

A ceria-carbon-sulfur (CeO—C—S) composite including a ceria-carbon (CeO—C) composite in which cylindrical carbon materials having ceria (CeO) particles bonded to surfaces thereof are entangled and interconnected to each other in three dimensions; and sulfur introduced into at least a portion of an outer surface and an inside of the ceria-carbon composite, a method for preparing the same, and positive electrode for a lithium-sulfur battery and a lithium-sulfur battery including the same.

Ceria-carbon-sulfur composite, method for preparing same, and positive electrode and lithium-sulfur battery comprising same

Disclosed is a sulfur-carbon composite, and a positive electrode for a lithium secondary battery and a lithium secondary battery including the same. More specifically, since the carbon contained in the sulfur-carbon composite includes carbon of various shapes and in particular, includes sheet-type carbon in a certain content, when the sulfur-carbon composite is applied as a positive electrode active material of a lithium secondary battery, the performance of the lithium secondary battery may be improved by preventing the leaching of sulfur and improving the reaction rate at the positive electrode.

Sulfur-carbon composite, and cathode and lithium secondary battery each comprising same

In order to solve the problem caused by leaching of lithium polysulfide, disclosed is a functional separator, a method of manufacturing the same, and a lithium secondary battery including the same, which can improve the capacity and life of the battery by coating a material capable of reducing lithium polysulfide on the separator surface. The functional separator includes a base separator; and a redox active polymer-conductive carbon composite layer on a surface of the base separator.

Functional separator, method for manufacturing the same, and lithium secondary battery comprising the same

A functional separator capable of improving the capacity and lifetime of a battery by coating a material capable of reducing lithium polysulfide on the surface of the separator, a method for manufacturing the same, and a lithium secondary battery including the same. The functional separator includes a base separator and a polyethylene oxide-conductive carbon composite layer present on the surface of the base separator.

Separator including polyethylene oxide-conductive carbon composite layer on base separator, method for manufacturing the same, and lithium secondary battery comprising the same

A titania-carbon-sulfur composite including a titania-carbon composite prepared by mixing cylindrical carbon materials and titania (TiO), in which some oxygen is reduced (i.e., x is less than 2), to have a structure in which cylindrical carbon materials are entangled and interconnected in three dimensions; and sulfur introduced into at least a part of the external surface and inside of the titania-carbon (TiO&#x2014;C) composite, and a method for preparing the same.

Titania-carbon nanotube-sulfur (TiO-CNT-S) composite and preparing method therefor

A separator including a porous base and a coating layer on at least one surface of the porous base, the coating layer including (a) a carbon nanotube including an oxygen functional group and (b) a lithium ion conducting polymer, and a lithium-sulfur battery including the same. Such a separator may be capable of resolving problems caused by lithium polysulfide occurring in a lithium-sulfur battery.

Separator and lithium-sulfur battery comprising the same

A carbon-sulfur composite including a carbon aggregate and sulfur, a method for preparing the same, and a positive electrode and a lithium-sulfur battery including the same.

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Daejeon, South Korea

Seungbo Yang