Lg Energy Solution, Ltd.

Jangsoo Lee

Kihyun Kim

Soohyun Kim

Seungbo Yang

Kwonnam Sohn

Suenghoon Han

Minsu Kim

Disclosed is a sulfur-carbon composite, a method for manufacturing the same, and a positive electrode for a lithium secondary battery and a lithium secondary battery including the same, which has excellent reactivity and lifetime characteristics and has an effect of reducing overvoltage.

Sulfur-carbon composite, positive electrode for lithium secondary battery including same, and lithium secondary battery

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 carbon product, including a carbon material, and a redox functional group-containing polymer layer on a surface of the carbon material, as well as a sulfur-carbon composite containing the same, and a lithium secondary battery containing the same. More specifically, since the redox functional group-containing polymer functions to promote the reduction of lithium polysulfide, when the carbon material having the redox functional group-containing polymer layer formed or the sulfur-carbon composite is applied as a positive electrode material for a lithium secondary battery, the performance of the battery may be improved.

Carbon having redox functional group-containing polymer layer formed thereon, and sulfur-carbon composite and lithium secondary battery including same

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

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.

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Daejeon, South Korea

Jangsoo Lee