Abstract: Disclosed is an organic/inorganic composite porous film, having: (a) inorganic particles; and (b) a binder polymer coating layer formed partially or totally on surfaces of the inorganic particles, wherein the inorganic particles are interconnected among themselves and are fixed by the binder polymer, and interstitial volumes among the inorganic particles form a micropore structure. Further disclosed is a porous film having: (a) a porous substrate having pores; and (b) a coating layer formed on at least one region selected from the group consisting of a surface of the substrate and a part of the pores present in the substrate, wherein the coating layer comprises styrene-butadiene rubber. Also disclosed is an electrochemical device containing the organic/inorganic composite porous film, a method of manufacturing the film.

Abstract: Disclosed are an apparatus and method for variably controlling the disconnection or connection of switch connections between battery units in a large battery system based on the degree of a sensed dangerous external situation to convert the battery system into a small capacity and low voltage state. The apparatus includes: switches provided to interconnection lines between battery assembly units to electrically connect or disconnect the interconnection lines; a switch control module adapted to apply on/off signals to the switches; and a disconnection control module adapted to control the switch control module based on a sensed dangerous level to vary the position and number of the target switches to be opened or closed and the disconnection intervals. According to the apparatus and method, dangerous external situations of a large battery system can be sensed and the disconnection of physical connections between the battery units can be variably controlled.

Abstract: Provided is a method of producing metal nanoparticles. Preferably, the method of producing metal nanoparticles includes preparing a reaction solution by adding a reducing agent solution to a dispersing agent solution, and simultaneously putting a metal precursor solution and the reducing agent solution into the reaction solution and mixing the resulting mixture. Large amounts of metal nanoparticle powder having a uniform particle diameter may be easily prepared.

Abstract: Disclosed herein is a secondary battery having an electrode assembly mounted in a prismatic container, wherein the inside of an electrolyte injection hole formed in a base plate mounted to an open upper end of the prismatic container includes an upper part having a chamfered structure in which the diameter of the electrolyte injection hole is gradually decreased downward and a lower part having a non-chamfered structure continuously formed from the chamfered structure, and, when a sealing member is pressed into the electrolyte injection hole, the sealing member deformed into a shape corresponding to the electrolyte injection hole comes into tight contact with the chamfered structure due to shear stress between the chamfered structure and the sealing member and forms a sealed state due to frictional interaction between the non-chamfered structure and the sealing member.

Abstract: There are disclosed a method and apparatus for detecting a fault of a battery pack and a power relay assembly. An apparatus for detecting a fault of a battery pack including a plurality of cells includes a pack voltage measurement unit for measuring a voltage of the battery pack, a cell voltage measurement unit for measuring a plurality of cell voltage for the plurality of cells, and a control unit for determining whether there is a fault at the battery pack based on the voltage of the battery pack and the plurality of cell voltages. A battery pack and a load connected to the battery pack can be protected by detecting whether there is a fault at the battery.

Abstract: Disclosed herein is a connection member for secondary batteries to achieve the electrical connection in a battery pack including two or more cylindrical secondary batteries in a physical contact manner, the connection member including an outer circumferential contact part contacting an electrode terminal of a lower battery cell along the outer circumferential region of the electrode terminal of the lower battery cell, such that the outer circumferential contact part can be electrically connected to the electrode terminal of the lower battery cell in a surface contact manner and a central contact part contacting an electrode terminal of an upper battery cell or the central region of a sidewall of the battery pack for providing an elastic contact force to the entire connection member mounted between the electrode terminals of the respective battery cells or between the electrode terminals of the battery cells and the sidewall of the battery pack.

Abstract: A polishing pad of a polishing system is mountable to a polishing plate and has a predetermined channel pattern so as to allow a polishing liquid supplied from a polishing liquid supplier to move on a polishing surface. The channel pattern has at least two kinds of patterns.

Abstract: Disclosed is an electrode for a magnesium secondary battery. The electrode includes a current collector and a magnesium plating layer formed on the surface of the current collector. The electrode is simple to produce and is inexpensive. In addition, the electrode is in the form of a thin film. Therefore, the electrode is useful for the fabrication of a magnesium secondary battery with high energy density. Further disclosed is a magnesium secondary battery including the electrode.

Abstract: Provided is a lithium mixed transition metal oxide having a composition represented by Formula I of LixMyO2 (M, x and y are as defined in the specification) having mixed transition metal oxide layers (“MO layers”) comprising Ni ions and lithium ions, wherein lithium ions intercalate into and deintercalate from the MO layers and a portion of MO layer-derived Ni ions are inserted into intercalation/deintercalation layers of lithium ions (“reversible lithium layers”) thereby resulting in the interconnection between the MO layers. The lithium mixed transition metal oxide of the present invention has a stable layered structure and therefore exhibits improved stability of the crystal structure upon charge/discharge. In addition, a battery comprising such a cathode active material can exhibit a high capacity and a high cycle stability.

Abstract: The present invention provides a method of preparing a polymer particle. More precisely, the invention provides a polymer particle having optimum impact strength and improved elastic recovery rate by forming the brush having softness on the surface of the monodisperse polymer particle by the anion dispersion polymerization using a conjugated diene monomer.

Abstract: A block copolymer of a polyimide and a polyamic acid is disclosed. Further disclosed are a method for producing the block copolymer and a positive type photosensitive composition comprising the block copolymer. The solubility of the photosensitive composition in an alkaline aqueous solution is controlled to achieve high resolution of a pattern. Further disclosed are a protective film of a semiconductor device and an ITO insulating film of an organic light emitting diode (OLED), which are formed using the block copolymer. The protective film and the ITO insulating film are very stable over time.

Abstract: Disclosed is a secondary battery including a cathode, an anode, a membrane and an electrolyte, wherein the cathode contains a mixture of a first cathode material defined herein and a second cathode material selected from the group consisting of a second-(a) cathode material defined herein and a second-(b) cathode material defined herein, and a combination thereof, wherein a mix ratio of the two cathode materials (first cathode material: second cathode material) is 50:50 to 90:10, and the membrane is an organic/inorganic composite porous membrane including (a) a polyolefin-based membrane substrate and (b) an active layer in which one or more areas selected from the group consisting of the surface of the substrate and a portion of pores of the substrate are coated with a mixture of inorganic particles and a binder polymer, wherein the active layer has a structure in which the inorganic particles are interconnected and fixed through a binder polymer and porous structures are formed by the interstitial volume bet

Abstract: Disclosed is a cathode active material including a lithium manganese-based oxide. The lithium manganese-based oxide has a spinel structure represented by Formula 1 below and high lithium ion diffusivity since (440) planes are predominantly formed in a crystal structure thereof. Li1+xMyMn2-x-yO4-zQz??(1) In Formula 1, 0?x?0.3, 0?y?1, and 0?z?1, M includes at least one element selected from the group consisting of Al, Mg, Ni, Co, Fe, Cr, V, Ti, Cu, B, Ca, Zn, Zr, Nb, Mo, Sr, Sb, W, Ti, and Bi, and Q includes at least one element selected from the group consisting of N, F, S, and Cl.

Abstract: Disclosed is an organic/inorganic composite porous film comprising: (a) inorganic particles; and (b) a binder polymer coating layer formed partially or totally on surfaces of the inorganic particles, wherein the inorganic particles are interconnected among themselves and are fixed by the binder polymer, and interstitial volumes among the inorganic particles form a micropore structure. A method for manufacturing the same film and an electrochemical device including the same film are also disclosed. An electrochemical device comprising the organic/inorganic composite porous film shows improved safety and quality.

Abstract: Disclosed is a cathode active material including a lithium manganese-based oxide. The lithium manganese-based oxide has a spinel structure, exhibits core-shell phase transition by which phase transition of a crystal structure occurs from a cubic structure to a tetragonal structure in a direction from the surface of particles to the center of the particles during discharging to the 3V region, and includes a conductive material at the shell to improve electrical conductivity of the tetragonal structure.

Abstract: The present invention provides a new compound and an organic electronic device using the same. The organic electronic device according to the present invention exhibits excellent properties in views of efficiency, driving voltage and a life span.

Abstract: Disclosed is an air knife chamber constructed such that water flowing down along a partition wall is allowed to fall in front of a slit. Due to this construction, the water can be effectively removed by air knives, thus contributing to a reduction in the defective proportion of substrates.

Abstract: A fluid supplying apparatus includes an inner tube having a plurality of holes for distributing a fluid supplied from a supply unit, and an outer tube arranged coaxially or non-coaxially with the inner tube to surround the inner tube and having a plurality of slots for injecting the fluid distributed therein from the holes to the outside. The outer tube substantially has the same length as the inner tube. The fluid supplying apparatus may be used for a thin film cleaning system or method.

Abstract: The present invention provides a composite material comprising a glass cloth; and an organic-inorganic hybrid composition comprising diphenylsilanediol and alkoxy silane, a composite film manufactured by using the same, and a method for manufacturing the composite film.

Abstract: A battery cell assembly in accordance with an exemplary embodiment is provided. The assembly includes a first frame member having a first plurality of tabs extending away from a first peripheral edge of the first frame member. Each tab of the first plurality of tabs has a first coupling feature at a distal end of the respective tab. The assembly further includes a second frame member having a plurality of slots extending into a second peripheral edge of the second frame member. The assembly further includes a battery cell disposed between the first and second frame members, and each first coupling feature of each tab of the first plurality of tabs is configured to engage a respective slot of the plurality of slots of the second frame member to fixedly hold the first and second frame members together.