Abstract: Proposed is a two-dimensional nanosheet, which can significantly improve catalytic efficiency by realizing a two-dimensional nanosheet structure with a high specific surface area including a metal material having an amorphous crystal structure as an electrochemical catalyst to fully utilize the characteristics of a metal oxide catalyst material with excellent electrical conductivity and, at the same time, which is easy for mass synthesis in manufacturing method due to its relatively simple manufacturing process, and is easy to realize ultra-thin and large-area.

Abstract: Proposed are an electrochemical catalyst that can replace platinum by being implemented into a two-dimensional metal nanosheet with a high specific surface area to fully use metal catalyst materials and metal phosphide catalyst materials with excellent electrical conductivity, simultaneously having a simple manufacturing process to facilitate mass synthesis to be capable of implementing an ultra-thin film and a large area to maximize the utilization of catalysts, and a manufacturing method thereof.

Abstract: The present invention provides a lithium-rich secondary battery having high-capacity/high-stability, which can stabilize an irreversible extraction reaction of oxygen in which the oxygen is excessively oxidized between initial charge and discharge to become a gas, while simultaneously preventing deterioration in structural stability without requiring additional chemical composition control or heterogeneous element substitution, and a manufacturing method thereof.

Abstract: Discussed is a battery pack to which a folding structure is applied and a manufacturing method thereof, and more particularly, to a battery pack in which battery cells are connected in series using a connection plate in an unfolded state, then wrapped and fixed with individual housings, and a folding structure is applied to form a cell stack structure of the battery cells by folding the connection plate connecting the battery cells in that state and a manufacturing method thereof.

Abstract: Disclosed is a battery cell with improved weldability and an apparatus for processing the same, and more particularly to a battery cell including an electrode assembly received in a cell case; and a pair of electrode leads constituted by a negative electrode lead and a positive electrode lead protruding outwards from the cell case, wherein: the negative electrode lead is made of a nickel material and is provided with one or more embossed portions, and the positive electrode lead is made of an aluminum material and is provided with no embossed portion.

Abstract: Disclosed is a battery pack with enhanced cooling efficiency. The battery pack includes a plurality of battery cells respectively having electrode terminals formed thereon; a bus bar plate having a connection portion protrusively extending toward the electrode terminal to contact the electrode terminal to be electrically connected to the electrode terminal; and a heat dissipating member between the bus bar plate and the battery cell and having a connection hole into which the connection portion of the bus bar plate is inserted.

Abstract: The present disclosure relates to a metal oxide nanosheet-sulfur nanocomposite containing sulfur nanoparticles grown directly on each of exfoliated metal oxide nanosheets, and a lithium-sulfur battery including a sulfur cathode containing the metal oxide nanosheet-sulfur nanocomposite.

Abstract: Disclosed is a battery pack with enhanced cooling efficiency. The battery pack includes a plurality of battery cells respectively having electrode terminals formed thereon; a bus bar plate having a connection portion protrusively extending toward the electrode terminal to contact the electrode terminal to be electrically connected to the electrode terminal; and a heat dissipating member between the bus bar plate and the battery cell and having a connection hole into which the connection portion of the bus bar plate is inserted.

Abstract: The present disclosure relates to a metal oxide nanosheet-sulfur nanocomposite containing sulfur nanoparticles grown directly on each of exfoliated metal oxide nanosheets, and a lithium-sulfur battery including a sulfur cathode containing the metal oxide nanosheet-sulfur nanocomposite.

Abstract: The present disclosure provides a method for producing a manganese oxide/graphene nanocomposite including synthesizing a manganese oxide/graphene nanocomposite through liquid phase reaction at a room temperature, a manganese oxide/graphene nanocomposite produced by the method, and an electrode material and a super-capacitor electrode including the manganese oxide/graphene nanocomposite.