Abstract: Provided are a core-shell catalyst with improved durability and a manufacturing method thereof including irradiating ultrasonic waves to a solution containing a reducing solvent, a noble metal precursor, a transition metal precursor, and a carbon support to form a cavity due to the irradiation of the ultra-waves and forming transition metal precursor core and noble metal precursor shell particles due to a difference in vapor pressure; and nitriding the transition metal precursor core and noble metal precursor shell particles at a temperature of 450 to 550° C. and a pressure condition of 60 to 100 bar under a gaseous nitrogen source, in which the transition metal may be any one selected from the group consisting of Y, La, Ce, Zn, and Mn or combinations thereof.

Abstract: A lithium battery including a positive electrode; a negative electrode including a negative active material layer including a first aqueous binder and a second aqueous binder, the first aqueous binder including a monomer unit; and a separator between the positive electrode and the negative electrode, the separator including a base material layer and a polymer layer formed on at least one surface of the base material layer, and the polymer layer including a non-aqueous binder including a monomer unit identical to the monomer unit of the first aqueous binder is disclosed.

Abstract: A method of manufacturing an electrode assembly for a rechargeable battery is disclosed. The method comprises providing a first electrode plate comprising an active portion that is coated with a first active material and an inactive portion extending from an edge of the active portion of the first electrode plate; providing a second electrode plate comprising an active portion that is coated with a second active material and an inactive portion extending from an edge of the active portion of the second electrode plate; providing a separator; winding the first electrode plate, the second electrode plate and the separator, the separator interposed between the first and second electrode plates; and removing parts of the inactive portion of the first electrode plate and the inactive portion of the second electrode plate to form a first plurality of electrode tabs for the first electrode plate and a second plurality of electrode tabs for the second electrode plate.

Abstract: A lithium battery including a positive electrode; a negative electrode including a negative active material layer including a first aqueous binder and a second aqueous binder, the first aqueous binder including a monomer unit; and a separator between the positive electrode and the negative electrode, the separator including a base material layer and a polymer layer formed on at least one surface of the base material layer, and the polymer layer including a non-aqueous binder including a monomer unit identical to the monomer unit of the first aqueous binder is disclosed.

Abstract: A lithium rechargeable battery includes an electrode assembly having a first electrode, a second electrode, and a separator interposed between them, a can having an opening to contain the electrode assembly, and a cap plate coupled to the top of the can. A side of the can is asymmetrical with respect to another side thereof about at least one of a long axis, short axis, and central point of its cross section. The lithium rechargeable battery has a predetermined space formed between the can and the electrode assembly for improved electrolyte injection and increased manufacturing efficiency and power storage capacity of the battery.

Abstract: A battery sheath having a radiation layer on its surface and a lithium polymer battery using the sheath are provided. The radiation layer improves radiation performance and mechanical strength of the battery, and also improves the response of a PTC device. The battery sheath comprises a metal layer having first and second surfaces, a radiation layer on the first surface of the metal layer, and a cast polypropylene (CPP) layer on the second surface of the metal layer. The lithium polymer battery has a PTC device electrically connected to a protective circuit module. The PTC device directly contacts the radiation layer of the battery sheath, thereby improving the response of the PTC device.

Abstract: A method of manufacturing an electrode assembly for a rechargeable battery is disclosed. The method comprises providing a first electrode plate comprising an active portion that is coated with a first active material and an inactive portion extending from an edge of the active portion of the first electrode plate; providing a second electrode plate comprising an active portion that is coated with a second active material and an inactive portion extending from an edge of the active portion of the second electrode plate; providing a separator; winding the first electrode plate, the second electrode plate and the separator, the separator interposed between the first and second electrode plates; and removing parts of the inactive portion of the first electrode plate and the inactive portion of the second electrode plate to form a first plurality of electrode tabs for the first electrode plate and a second plurality of electrode tabs for the second electrode plate.

Abstract: A lithium rechargeable battery includes an electrode assembly having a first electrode, a second electrode, and a separator interposed between them, a can having an opening to contain the electrode assembly, and a cap plate coupled to the top of the can. A side of the can is asymmetrical with respect to another side thereof about at least one of a long axis, short axis, and central point of its cross section. The lithium rechargeable battery has a predetermined space formed between the can and the electrode assembly for improved electrolyte injection and increased manufacturing efficiency and power storage capacity of the battery.

Abstract: A pouch type lithium rechargeable battery with improved stability comprises an electrode assembly including a first electrode plate, a second electrode plate, and a separator interposed between the first electrode plate and the second electrode plate, a pouch case having a cavity for housing the electrode assembly therein, a protective circuit module for controlling charge/discharge of the electrode assembly, and a connection lead that couples the protective circuit module with the electrode assembly while shutting off a current being applied to the electrode assembly when a temperature of the electrode assembly rises abnormally.

Abstract: A secondary battery having a cap assembly, including an electrode assembly; a case in which the electrode assembly is located; a cap assembly having a cap plate coupled to and hermetically sealing the case. A terminal member has a head with a stepped protrusion penetrating the cap plate and insulated from the cap plate by an insulating member. The stepped protrusion presses the insulating member in multiple steps. The terminal member is connected to a positive or negative electrode terminal of the electrode assembly.

Abstract: Provided is a secondary battery having a cap assembly, including an electrode assembly, a case into which the electrode assembly is inserted, and a terminal member having a cap plate coupled to the case to hermetically seal the case and a stepped protrusion, penetrating the cap plate to be riveted, insulated from the cap plate by an insulating member, and having a stepped protrusion on its head so as to press the insulating member in multiple steps, and the terminal member connected to a positive or negative electrode terminal of the electrode assembly.

Abstract: A secondary battery having a cap assembly, including an electrode assembly; a case in which the electrode assembly is located; a cap assembly having a cap plate coupled to and hermetically sealing the case. A terminal member has a head with a stepped protrusion penetrating the cap plate and insulated from the cap plate by an insulating member. The stepped protrusion presses the insulating member in multiple steps. The terminal member is connected to a positive or negative electrode terminal of the electrode assembly.