Lg Energy Solution, Ltd.

Lg Chem, Ltd

Dongwook Koh

Doo Kyung Yang

Eunkyung Cho

Kwonnam Sohn

Intae Park

Yun Kyoung Kim

Seung Yoon Yang

A negative electrode for a lithium secondary battery including a lithium metal layer; a first protective layer formed on a surface of the lithium metal layer; and a second protective layer formed on a surface of the first protective layer opposite the lithium metal layer, wherein the first protective layer and the second protective layer are different from each other in at least one property selected from the group consisting of ion conductivity and electrolyte uptake.

Negative electrode for lithium secondary battery and lithium secondary battery comprising same

A sulfur-carbon composite and a lithium-sulfur battery including the same, and in particular, to a sulfur-carbon composite including a porous carbon material; a polymer having electrolyte liquid loading capacity; and sulfur. The porous carbon material may be coated with the polymer having electrolyte liquid loading capacity and the coated porous carbon material then mixed with the sulfur. By introducing a coating layer including the polymer having electrolyte liquid loading capacity to a surface of the porous carbon material, it is possible to improve reactivity of the sulfur and an electrolyte liquid and thereby enhance performance and lifetime properties of the lithium-sulfur battery.

Sulfur-carbon composite and lithium-sulfur battery including same

An electrolyte for a lithium-secondary battery including a solvent, a lithium salt and an additive, wherein the additive includes a diamine-based compound, and a lithium-secondary battery including the same.

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

A cathode for lithium secondary batteries including a gel polymer electrolyte coating layer formed on a cathode active material layer of a lithium secondary battery, and more particularly, a cathode having a novel structure capable of solving problems caused due to lithium polysulfides, the problems being caused in conventional lithium secondary batteries, and a lithium secondary battery including the same and method for preparing the same.

Cathode for lithium secondary batteries and method of manufacturing the same

A lithium-sulfur battery in which a passivation film having a semi-interpenetrating polymer network (semi-IPN) structure is formed on an electrode to improve lifespan characteristics of high-loading lithium-sulfur batteries.

Lithium-sulfur battery

A sulfur-carbon composite and a lithium-sulfur battery including the same, and in particular, to a sulfur-carbon composite comprising a porous carbon material; and sulfur on at least a part of an inside and outside surface of the porous carbon material, wherein the inside and outside surface of the porous carbon material include a coating layer comprising an ion conducting polymer, and a lithium-sulfur battery including the same. Also provided is an ion conducting polymer coating layer on a porous carbon material surface which thereby improves a lithium ion conducting property to a positive electrode, and as a result, may enhance capacity and life time properties of a lithium-sulfur battery.

Growing community of inventors

Daejeon, South Korea

Dongwook Koh