Abstract: Proposed is a portable laser weapon. The portable laser weapon includes: a laser generation unit generating a high-power laser beam; a wearing unit having the laser generation unit therein and being able to be worn on an individual; a sighting-shooting unit receiving and shooting a laser beam generated from the laser beam generation unit; and a beam transmission cable connecting the laser generation unit and the sighting-shooting unit to each other, thereby transmitting a laser generated from the laser generation unit to the sighting-shooting unit. Accordingly, it is possible to considerably improve the usability of laser weapons by providing a laser weapon that can be operated by an individual infantryman and can shoot a high-power laser.

Abstract: A separator includes a porous base, and a first coating layer on a surface of the porous base, the first coating layer including a (meth)acrylic acid ester-based polymer having a glass transition temperature of about 10° C. to about 60° C. The first coating layer may be positioned opposite to a cathode of the lithium secondary battery. The separator may further include a second coating layer on a surface of the porous base opposite to the first coating layer and comprising a (meth)acrylic acid ester-based polymer.

Abstract: A separator for a lithium battery includes a porous substrate and a coating layer on at least one side of the porous substrate, the coating layer having a first side adjacent to the porous substrate, and a second side opposite the first side. The coating layer may include an inorganic compound and a polymer binder, and an amount of the polymer binder at the second side is greater than an amount of the polymer binder at the first side. A rechargeable lithium battery includes the separator.

Abstract: A separator for a lithium battery includes a porous coating layer disposed on a surface of a porous base, and a first adhesive layer including a plurality of dots disposed at intervals at a surface of the porous coating layer, the plurality of dots of the first adhesive layer penetrating through the porous coating layer to be on the surface of the porous base.

Abstract: Disclosed are porous substrate and a coating layer positioned on one side or both sides of the porous substrate, wherein the coating layer includes a filler (A) having an average particle diameter of about 0.3 ?m to about 2 ?m; and a binder (B) including an organic polymer and an inorganic particle, an organic particle, or a combination thereof, wherein an average particle diameter of each of the inorganic particle and the organic particle is about 5 nm to about 200 nm, and a rechargeable lithium battery including the separator.

Abstract: A high-order harmonic wave generation apparatus using a diode-pumped solid state laser includes a pump head for generating a fundamental wave, Porro prisms disposed on the left and right sides of the pump head, nonlinear crystals for sequentially generating a second-order harmonic wave, a fourth-order harmonic wave, and a fifth-order harmonic wave from the fundamental wave, and a final emission unit for reflecting and transmitting any one of the second-order harmonic wave, the fourth-order harmonic wave, and the fifth-order harmonic wave and for emitting the harmonic wave without changing the optical path. Accordingly, the apparatus is insensitive to changes in the external environment through a resonator having a structure comprising Porro prisms, and enables the final emission unit to selectively output the fourth-order harmonic wave or the fifth-order harmonic wave.

Abstract: A high-order harmonic wave generation apparatus using a diode-pumped solid state laser includes a pump head for generating a fundamental wave, Porro prisms disposed on the left and right sides of the pump head, nonlinear crystals for sequentially generating a second-order harmonic wave, a fourth-order harmonic wave, and a fifth-order harmonic wave from the fundamental wave, and a final emission unit for reflecting and transmitting any one of the second-order harmonic wave, the fourth-order harmonic wave, and the fifth-order harmonic wave and for emitting the harmonic wave without changing the optical path. Accordingly, the apparatus is insensitive to changes in the external environment through a resonator having a structure comprising Porro prisms, and enables the final emission unit to selectively output the fourth-order harmonic wave or the fifth-order harmonic wave.

Abstract: A separator includes a substrate layer that is porous and an adhesion layer on at least one side of the substrate layer, where inorganic substances are embedded in the separator. A secondary battery includes: an electrode assembly including a first electrode plate, a second electrode plate, and the separator between the first electrode plate and the second electrode plate, the first electrode plate, the second electrode plate and the separator being stacked, and at least one electrode tab being withdrawn to a side of the electrode assembly; and a case receiving the electrode assembly.

Abstract: Disclosed are a binder composition for a rechargeable lithium battery including a cross-linked compound of polyacrylic acid substituted with an alkali cation and polyvinyl alcohol and an electrode and rechargeable lithium battery including the same. The cross-linked compound of polyacrylic acid and polyvinyl alcohol is obtained by heating polyacrylic acid and polyvinyl alcohol to effect a cross-linking reaction via esterification. The cross-linked compound of polyvinyl alcohol and polyacrylic acid substituted with an alkali cation may improve phase stability of a binder, and has high cross-linking ratio, thereby providing for excellent performance of a rechargeable lithium battery.

Abstract: A separator includes a porous base, and a first coating layer on a surface of the porous base, the first coating layer including a (meth)acrylic acid ester-based polymer having a glass transition temperature of about 10° C. to about 60° C. The first coating layer may be positioned opposite to a cathode of the lithium secondary battery. The separator may further include a second coating layer on a surface of the porous base opposite to the first coating layer and comprising a (meth)acrylic acid ester-based polymer.

Abstract: A separator for a rechargeable lithium battery includes a porous substrate; and a coating layer disposed on one or more sides of the porous substrate, the coating layer including organic particles and a binder polymer, wherein the organic particles include a material different from that of the binder polymer and the binder polymer is included in the coating layer in an amount in a range of 50 to 99 wt % based on the total amount of the coating layer, and a rechargeable lithium battery including the same.

Abstract: In one aspect, a separator that includes a porous substrate; and a coating layer including an inorganic compound-organic/inorganic binder, and a binder polymer, and a rechargeable lithium battery including the separator is provided.

Abstract: A separator for a lithium battery includes a porous coating layer disposed on a surface of a porous base, and a first adhesive layer including a plurality of dots disposed at intervals at a surface of the porous coating layer, the plurality of dots of the first adhesive layer penetrating through the porous coating layer to be on the surface of the porous base.

Abstract: A separator includes an organic-inorganic hybrid coating layer on at least one surface of a porous base and a pattern coating layer on a surface of the organic-inorganic hybrid coating layer. The pattern coating layer includes patterns having an average diameter of 0.1 mm or less that are regularly spaced apart from each other.

Abstract: Disclosed are porous substrate and a coating layer positioned on one side or both sides of the porous substrate, wherein the coating layer includes a filler (A) having an average particle diameter of about 0.3 ?m to about 2 ?m; and a binder (B) including an organic polymer and an inorganic particle, an organic particle, or a combination thereof, wherein an average particle diameter of each of the inorganic particle and the organic particle is about 5 nm to about 200 nm, and a rechargeable lithium battery including the separator.

Abstract: A separator for a rechargeable lithium battery includes a porous substrate; and a coating layer disposed on one or more sides of the porous substrate, the coating layer including organic particles and a binder polymer, wherein the organic particles include a material different from that of the binder polymer and the binder polymer is included in the coating layer in an amount in a range of 50 to 99 wt % based on the total amount of the coating layer, and a rechargeable lithium battery including the same.

Abstract: A separator for a lithium battery includes a porous substrate and a coating layer on at least one side of the porous substrate, the coating layer having a first side adjacent to the porous substrate, and a second side opposite the first side. The coating layer may include an inorganic compound and a polymer binder, and an amount of the polymer binder at the second side is greater than an amount of the polymer binder at the first side. A rechargeable lithium battery includes the separator.

Abstract: In one aspect, a separator that includes a porous substrate; and a coating layer including an inorganic compound-organic/inorganic binder, and a binder polymer, and a rechargeable lithium battery including the separator is provided.

Abstract: A negative active material includes a silicon-based particle and a crystalline carbonaceous material, the crystalline carbonaceous material including a graphite particle and a carbonaceous nano-sheet.

Abstract: A negative active material composition includes a negative active material, a binder, and a solvent, in which the solvent includes an aqueous solvent and an organic solvent. A method of preparing a negative electrode plate uses the negative active material composition. A lithium battery is manufactured using the negative active material composition, and has good lifetime characteristics due to the formation of pores in the electrode plate.