Abstract: The present disclosure relates to a brake disc including a braking part having a circular plate shape having a hollow portion and a plurality of coupling portions protruding and extending from an inner diameter surface thereof, and a hat part disposed in the hollow portion and having a plurality of insertion portions protruding laterally, in which the plurality of coupling portions is respectively coupled to the plurality of insertion portions, and the coupling portion of the braking part and the insertion portion of the hat part are joined to only one of an outboard portion or an inboard portion of the braking part. According to the present disclosure, it is possible to reduce noise occurring at a position at which the hat part and the braking part are coupled to each other and improve cooling performance.

Abstract: Disclosed are a separator for secondary batteries with enhanced stability and a method of manufacturing the separator. The separator can prevent self-discharge which may occur when a porous non-woven fabric material is used for a separator; can perform a shutdown function at a high temperature of 200° C. or less; and can avoid even under harsh conditions of high temperatures, deterioration in stability caused by internal short-circuit of positive and negative electrodes. In particular, the separator for secondary batteries of the present invention includes a porous non-woven fabric material impregnated with a baroplastic polymer powder and pores of the porous non-woven fabric material are filled with the baroplastic polymer powder by pressing an assembly of the secondary battery.

Abstract: All-solid-state electrochemical cells comprising an inorganic particle-polymer composite, where the polymer is a crosslinked polymer and the content of inorganic particles in the composite is at least 50 wt. % are described. Also described are processes for the preparation of such all-solid-state electrochemical cells, all-solid-state batteries comprising them and their uses in mobile devices, electric or hybrid vehicles, or in renewable energy storage.

Abstract: Disclosed are a separator for secondary batteries with enhanced stability and a method of manufacturing the separator. The separator can prevent self-discharge which may occur when a porous non-woven fabric material is used for a separator; can perform a shutdown function at a high temperature of 200° C. or less; and can avoid even under harsh conditions of high temperatures, deterioration in stability caused by internal short-circuit of positive and negative electrodes. In particular, the separator for secondary batteries of the present invention includes a porous non-woven fabric material impregnated with a baroplastic polymer powder and pores of the porous non-woven fabric material are filled with the baroplastic polymer powder by pressing an assembly of the secondary battery.

Abstract: A method of manufacturing the all-solid battery includes steps of: forming a cathode layer; forming an anode layer; forming an electrolyte layer between the cathode layer and the anode layer; and forming an insulation layer using a baroplastic polymer at an edge portion of the battery. The step of forming the insulation layer comprises: forming a coating layer through coating of the edge portion of the battery with the baroplastic polymer; and shaping the baroplastic polymer through pressing of the coating layer.

Abstract: Disclosed are a separator for secondary batteries with enhanced stability and a method of manufacturing the separator. The separator can prevent self-discharge which may occur when a porous non-woven fabric material is used for a separator; can perform a shutdown function at a high temperature of 200° C. or less; and can avoid even under harsh conditions of high temperatures, deterioration in stability caused by internal short-circuit of positive and negative electrodes. In particular, the separator for secondary batteries of the present invention includes a porous non-woven fabric material impregnated with a baroplastic polymer powder and pores of the porous non-woven fabric material are filled with the baroplastic polymer powder by pressing an assembly of the secondary battery.

Abstract: A lithium ion battery including a core-shell structured fire extinguishing particle is disclosed. When the battery is overheated to a predetermined temperature, a shell of the fire extinguishing particle coated on one surface or both surfaces of a porous separator is melted, a fire extinguishing material disposed in an inner space of the shell is released into an electrolytic solution of the battery, and as a result, it is possible to prevent the battery from being ignited or exploded even though the battery is overheated. Further, the melted shell clogs pores of the porous separator to block lithium ions from moving, such that the battery is blocked from being driven, thereby preventing the battery from being overheated any more.

Abstract: Provided are a method of manufacturing an all-solid battery and an all-solid battery manufactured by the same for efficiently insulating an edge portion of the all-solid battery. Particularly, the all-solid batter may include a hybrid current collector comprising a porous metal current collector at the edge portions thereof, and a cathode layer or an anode layer may be further fabricated by coating a cathode active material or an anode active material on the hybrid current collector. Therefore, a short-circuit of the edge portion that may occur due to the detachment of the electrode material at the edge portion of the electrode may be prevented and a use rate and energy density of the edge portion electrode may be improved.

Abstract: A method of manufacturing the all-solid battery includes steps of: forming a cathode layer; forming an anode layer; forming an electrolyte layer between the cathode layer and the anode layer; and forming an insulation layer using a baroplastic polymer at an edge portion of the battery. The step of forming the insulation layer comprises: forming a coating layer through coating of the edge portion of the battery with the baroplastic polymer; and shaping the baroplastic polymer through pressing of the coating layer.

Abstract: The present invention provides a secondary battery that includes a metal ion receptor, which can absorb metal dendrites generated on the surface of a cathode while the battery is used, in a battery cell, whereby it is possible to improve safety by suppressing growth of dendrites and preventing a short due to a dendrite by making metal dendrites be absorbed in the metal ion receptor before the dendrites growing on the surface of the cathode reach the surface of an anode.

Abstract: Provided are a method of manufacturing an all-solid battery and an all-solid battery manufactured by the same for efficiently insulating an edge portion of the all-solid battery. Particularly, the all-solid batter may include a hybrid current collector comprising a porous metal current collector at the edge portions thereof, and a cathode layer or an anode layer may be further fabricated by coating a cathode active material or an anode active material on the hybrid current collector. Therefore, a short-circuit of the edge portion that may occur due to the detachment of the electrode material at the edge portion of the electrode may be prevented and a use rate and energy density of the edge portion electrode may be improved.

Abstract: Provided are electrode slurry including (A) an electrode active material, (B) a conductive material, and (C) a binder containing a cellulose compound, styrene-butadiene rubber and lithium polyacrylic acid at the same time, and an electrode and a lithium secondary battery including the slurry.

Abstract: A lithium ion battery including a core-shell structured fire extinguishing particle is disclosed. When the battery is overheated to a predetermined temperature, a shell of the fire extinguishing particle coated on one surface or both surfaces of a porous separator is melted, a fire extinguishing material disposed in an inner space of the shell is released into an electrolytic solution of the battery, and as a result, it is possible to prevent the battery from being ignited or exploded even though the battery is overheated. Further, the melted shell clogs pores of the porous separator to block lithium ions from moving, such that the battery is blocked from being driven, thereby preventing the battery from being overheated any more.

Abstract: Disclosed are a separator for secondary batteries with enhanced stability and a method of manufacturing the separator. The separator can prevent self-discharge which may occur when a porous non-woven fabric material is used for a separator; can perform a shutdown function at a high temperature of 200° C. or less; and can avoid even under harsh conditions of high temperatures, deterioration in stability caused by internal short-circuit of positive and negative electrodes. In particular, the separator for secondary batteries of the present invention includes a porous non-woven fabric material impregnated with a baroplastic polymer powder and pores of the porous non-woven fabric material are filled with the baroplastic polymer powder by pressing an assembly of the secondary battery.

Abstract: A lithium ion secondary battery includes an electrode assembly having a separator, a collector layer stacked on either side of the separator, and a positive electrode active material and a negative electrode active material formed on respective outer surfaces of the collector layer. The electrode assembly causes lithium ions to move to an inside of the separator by liquid electrolyte, which moves to the positive electrode active material and the negative electrode active material, thereby causing a charging/discharging reaction inside the collector layer.

Abstract: The present disclosure provides a flame-resistant electrolyte for rechargeable lithium secondary batteries, and a rechargeable lithium secondary battery including the same. The flame-resistant electrolyte for rechargeable lithium secondary batteries can reduce volatility of an organic solvent, and inhibit flammability to improve stability of a battery when a flame-resistant solvent, which includes a fluorinated phosphazene-based phosphorus compound and a phosphite-based compound for forming protective films on surfaces of negative and positive electrodes, is mixed with a lithium salt and a carbonate-based solvent, and thus has good lifespan characteristics and high battery charge/discharge efficiency even under high-temperature and high-voltage environments, and also has improved battery performance since an electrode interface is stabilized to inhibit side reaction with an electrolyte.