Abstract: A separator for a rechargeable lithium battery including a tungsten-doped vanadium oxide (VO2) phase transition material and the rechargeable lithium battery including the separator. Here, an explosion possibility of the rechargeable lithium battery including the separator may be prevented and delayed when the battery is excessively heated.

Abstract: Disclosed are a supporter for a fuel cell, and an electrode for a fuel cell, a membrane-electrode assembly, and a fuel cell system including the same. The supporter includes a transition metal oxide coating layer formed on a surface of a carbonaceous material, the surface of the carbonaceous material covalently bonded with the transition metal oxide.

Abstract: A battery charger, including: a sensor for monitoring a degree of deterioration of a secondary battery; a current driver for applying a current to the secondary battery; and a controller for controlling the current applied to the secondary battery from the current driver, receiving the degree of deterioration of the secondary battery from the sensor, and determining whether to change or maintain the current applied to the secondary battery according to the degree of deterioration of the secondary battery.

Abstract: Disclosed is an electrolyte for a secondary lithium battery and a secondary lithium battery including the same, and the electrolyte includes an additive represented by Formula 1. The definitions of each substituent in Formula 1 are the same as in the specification.

Abstract: A battery pack having increased resistance against external impact by increasing a coupling strength between a bare cell and a case, resulting in increased reliability and quality. The battery pack includes a bare cell, a circuit module electrically connected to the bare cell, a frame case surrounding the bare cell and including a channel groove arranged at a region facing the bare cell, a coupling reinforcement portion arranged in the channel groove to couple the frame case to the bare cell and a metal label attached to side surfaces of the bare cell.

Abstract: The present invention provides a cylindrical secondary electrode including a first electrode plate, a second electrode plate, a separator interposed between the first electrode plate and the second electrode plate, and a case having a space for receiving the electrode assembly, wherein the cylindrical secondary electrode may include a core element having a space at the center thereof and having a tubular shape with a circular cross section, which is inserted into a space at the center of an electrode assembly and has at least one slit including a bent portion.

Abstract: In one aspect, a composite binder for a battery, including an inorganic particle; a binder polymer; and an organic-inorganic coupling agent, a negative electrode including the composite binder, and a lithium battery including the negative electrode is provided.

Abstract: There is provided a battery pack capable of improving the safety thereof. The battery pack includes a battery array, side plates, a top cover and end plates. The battery array includes a plurality of battery cells aligned in a first direction. The battery array is formed as a hexahedron having (1-1)th, (1-2)th, (2-1)th (2-2)th, (3-1)th and (3-2)th planes. The top cover is provided to the (1-1)th plane of the battery array, and has reinforcing frames respectively formed at both sides based on the first direction. The reinforcing frame includes vertical and horizontal frames. The end plates are provided to the (3-1)th and (3-2)th planes, respectively. The end plates are fixed to the top cover. A holding part pressing both sides of the top cover on the (1-1)th plane are provided to the side plates, respectively.

Abstract: Disclosed is a lithium secondary battery that includes a separator including a coating layer including an inorganic compound, a polymer and an organic/inorganic bonding silane compound formed from an organic/inorganic bonding silane compound having a first reactive functional group; and an electrode contacting the coating layer, and including an active material and a binder formed from a binder having a second reactive functional group, wherein the first reactive functional group is reactive with the second reactive functional group, and the lithium secondary battery includes a chemical bond generated by reacting the first reactive functional group with the second reactive functional group.

Abstract: A method of preparing a lithium secondary battery is disclosed, the method including coating a coating layer-forming composition including an inorganic compound and an organic/inorganic bindable silane compound having a first reactive functional group on a substrate to form a separator including a coating layer; preparing an electrode including an active material and a binder having a second reactive functional group; stacking the electrode to contact the coating layer of the separator, and adding an electrolyte to the electrode and separator to prepare a lithium secondary battery; and heat-treating the lithium secondary battery to react the first reactive functional group with the second reactive functional group and form a chemical bond.

Abstract: A battery cell holder is disclosed. In one embodiment, the holder includes first and second outer frames respectively positioned at first and second sides of a plurality of battery cells arranged substantially parallel with each other, wherein the first and second sides are opposing each other, and wherein the outer frames comprise first and second outer fastening members, respectively. The cell holder may further include at least one inner frame disposed between the outer frames, wherein the at least one inner frame comprises a first inner frame adjacent to the first outer frame, wherein the first inner frame has first and second inner fastening members which are respectively formed at opposing sides thereof and have corresponding shapes with respect to each other. The first inner fastening member may be connected to the first outer fastening member.

Abstract: A battery pack includes a plurality of battery cells having electrodes and arranged parallel to each other, a holder case accommodating the plurality of battery cells, a protective circuit module mounted on an outer surface of the holder case, a lead line electrically connecting the protective circuit module to the plurality of battery cells, and a connection tab including a body and an extending member. The body is electrically connected to the electrodes of the plurality of the battery cells and the extending member extends from the body. The extending member includes a lead-line soldering member having the lead line soldered thereto and a lead-line pressing member pressing on the lead line from above the lead-line soldering member.

Abstract: A secondary battery including: an electrode assembly; a case receiving the electrode assembly and including a plurality of stepped sections at an inner side of the case in contact with the electrode assembly; and at least one electrode tab electrically connected with the electrode assembly and withdrawn toward an outside of the case. In the secondary battery, a friction force between the inner side of the case and the electrode assembly is increased due to the plurality of stepped sections, thereby minimizing or reducing movement of the electrode assembly within the case.

Abstract: A battery pack includes a battery holder, a plurality of battery cells, and a case. The battery holder has accommodating holes for respectively accommodating the plurality of battery cells on a first side and at least one concave groove formed by removing one portion of the battery holder on a lateral side. The battery holder further has a plurality of first coupling members formed on a second side. The case substantially covers the battery holder having the plurality of battery cells accommodated therein. A first portion of the case has at least one coupling rib coupled to the concave groove. A second portion of the case has at least one second coupling member coupled to the first coupling member.

Abstract: A battery module and battery pack, the battery module including a pair of end plates facing each other; a plurality of battery units arranged in a first direction between the end plates; a first side plate extending along a first side of the plurality of battery units, the first side plate being coupled to the end plates; a second side plate extending along a second side of the plurality of battery units, the second side plate being coupled to the end plates and being disposed opposite to the first side plate; a first coupling member, the first coupling member coupling the end plates to the first side plate; and a second coupling member, the second coupling member coupling the end plates to the second side plate, wherein the first coupling member and the second coupling member are disposed in asymmetrical positions with respect to a central line of the end plates.

Abstract: A rechargeable battery including an electrode assembly including a first electrode and a second electrode; a case accommodating the electrode assembly; a first terminal electrically connected to the first electrode of the electrode assembly; a cap plate on the case, the cap plate being electrically connected to the second electrode of the electrode assembly; and an electron donor, the electron donor being electrically connected to the first terminal.

Abstract: A negative active material for a rechargeable lithium battery includes a Si—Al—Fe alloy represented by Formula 1. The Si—Al—Fe alloy includes a Si phase and an alloy phase, and the alloy phase includes Si, Al, and Fe in a ratio of atomic percentages of about 3:3:2: xSi-yAl-zFe ??Formula 1 wherein 50 at %?x?90 at %, 5 at %?y?30 at %, 5 at %?z?30 at %, and x+y+z=100 at %.

Abstract: A battery pack providing power to a portable electronic device is disclosed which inhibits electromagnetic waves generated by the battery pack from interfering with the portable electronic device. The portable electronic device may include a radiofrequency (RF) circuit including a transceiver. The battery pack may include a battery cell and a protection circuit module (PCM) which operates to prevent the battery cell from overcharge/overdischarge and overheating. The PCM may include a substrate and a protection device mounted to the substrate. Electromagnetic waves generated when the protection device operates are shielded from the portable electronic device by a shielding layer formed on the substrate of the PCM. The substrate may include a plurality of circuit layers, each including a circuit layer, with the circuit layers in electrical communication with one another. A shielding pattern is formed on at least one of the circuit layers.

Abstract: A composite including: a carbonaceous material; and a solid solution including a first metal and a cerium oxide, wherein the solid solution is disposed on the carbonaceous material.

Abstract: A rechargeable battery assembly is disclosed. The rechargeable battery assembly holds rechargeable battery cells. The battery cells are oriented so as to have all of the positive terminals at the one end of the assembly and the negative terminals at the other end. The positive and negative terminals are respectively connected together by positive and negative tabs, which have connection holes substantially equidistant from each of the positive and negative terminals of the battery cells. In some embodiments, multiple assemblies are connected to form a battery pack.