Abstract: A flexible secondary battery includes an electrode assembly and external material surrounding the electrode assembly having at least one bonding portion, wherein the external material is bonded to itself at the at least one bonding portion, and the at least one bonding portion extends in a lengthwise direction of the electrode assembly at an edge of the electrode assembly.

Abstract: A flexible secondary battery includes an electrode stack assembly including a first electrode layer, a second electrode layer, and a separator between the first and second electrode layers; wherein the electrode stack assembly has a first end portion and a second end portion located opposite to the first end portion; and a fixing member fixing the first electrode layer, the separator, and the second electrode layer together; wherein the electrode stack assembly includes a fixing member region in which the fixing member is formed, the fixing member region being located between the first and second end portions of the electrode stack assembly in a first direction, and wherein the first electrode layer, the separator, and the second electrode layer are flexible at both sides of the fixing member.

Abstract: Provided is a secondary battery. The secondary battery includes: an electrode assembly including a positive electrode plate, a separator, and a negative electrode plate wound around a first axis extending in a first direction, having a thickness in a second direction perpendicular to the first direction and a length in a third direction perpendicular to the first direction and the second direction, and having a curvature with respect to the first axis while the length is greater than the thickness; an electrode case including a body and a cover having a curvature corresponding to the curvature of the electrode assembly and having different stiffnesses; and a first electrode tab and a second electrode tab connected respectively to the positive electrode plate and the negative electrode plate and protruding from the electrode assembly in a direction perpendicular to the first direction.

Abstract: An electrode assembly includes a structure including a first electrode plate and a second electrode plate that are wound together, and a separator between the first electrode plate and the second electrode plate, a first electrode tab that is electrically connected to the first electrode plate, and a second electrode tab that is electrically connected to the second electrode plate. The structure includes a pair of grooves at opposite sides of the structure, the grooves being formed by compression of the structure at the opposite sides in a direction perpendicular to a winding surface. The structure including a first part and a second part that are oppositely located with respect to a reference line connecting the pair of grooves, and the second part is shifted in a first direction such that the second part is partially misaligned with the first part.

Abstract: A battery pack includes a first electrode assembly; a second electrode assembly electrically connected to the first electrode assembly; and a pouch accommodating the first electrode assembly and the second electrode assembly, wherein each of the first electrode assembly and the second electrode assembly comprises a first surface, a second surface facing the first surface, and a pair of curved surfaces connecting the first surface and the second surface, wherein the first surface of the first electrode assembly and the second surface of the second electrode assembly are oriented to face each other, and wherein the second electrode assembly is offset in a first direction such that the second electrode assembly partially overlaps with the first electrode assembly.

Abstract: A solid electrolyte is disclosed. The solid electrolyte includes a main portion that includes ?-alumina or ??-alumina, and an edge portion integrally provided with the main portion. The edge portion has a mixed portion that includes ?-alumina and includes ? alumina or ??-alumina. A concentration gradient of the ?-alumina in the edge portion decreases in a first direction from the edge portion to the main portion.

Abstract: An electrode structure and an electrochemical cell including the electrode structure are provided. The electrode structure includes a porous three-dimensional (3D) outer net including an interconnected plurality of outer metal lines that define a plurality of outer holes between adjacent ones of the outer metal lines. The outer metal lines include a porous 3D inner net, a first layer coating the inner net, and a second layer coating the first layer. The inner net includes an interconnected plurality of inner metal lines that define a plurality of inner holes between adjacent ones of the inner metal lines. The inner metal lines include a first metal. The first layer includes a second metal. The second layer includes a third metal.

Abstract: In some aspects, a composite electrode active material including a core capable of intercalating and deintercalating lithium and a coating layer formed on at least a part of the surface of the core, wherein the coating layer includes a porous carbonaceous material is provided.

Abstract: An electrochemical battery including: a housing; a pouch-shaped solid electrolyte disposed in the housing and having an open end; an insulator that is disposed on the open end of the solid electrolyte to cover the open end and includes a plurality of protrusions facing the open end of the solid electrolyte; at least two types of sealants disposed between the solid electrolyte and the insulator and having different glass transition temperatures, respectively; a first electrode material disposed inside the pouch-shaped solid electrolyte; and a second electrode material disposed outside the pouch-shaped solid electrolyte.

Abstract: An electrode structure and an electrochemical cell including the electrode structure are provided. The electrode structure includes a porous three-dimensional (3D) outer net including an interconnected plurality of outer metal lines that define a plurality of outer holes between adjacent ones of the outer metal lines. The outer metal lines include a porous 3D inner net, a first layer coating the inner net, and a second layer coating the first layer. The inner net includes an interconnected plurality of inner metal lines that define a plurality of inner holes between adjacent ones of the inner metal lines. The inner metal lines include a first metal. The first layer includes a second metal. The second layer includes a third metal.

Abstract: An electrochemical storage cell including a housing; a solid electrolyte tube, which defines an inner space of the housing as a first electrode chamber and a second electrode chamber; a first electrode material in the first electrode chamber; a second electrode material in the second electrode chamber; and an electron channel unit arranged in the second electrode chamber for guiding movement of electrons in the second electrode chamber, the electron channel unit having a non-constant thickness.

Abstract: A solid electrolyte is disclosed. The solid electrolyte includes a main portion that includes ?-alumina or ??-alumina, and an edge portion integrally provided with the main portion. The edge portion has a mixed portion that includes ?-alumina and includes ? alumina or ??-alumina. A concentration gradient of the ?-alumina in the edge portion decreases in a first direction from the edge portion to the main portion.

Abstract: An electrochemical cell includes a housing; a solid electrolyte dividing the housing into a first electrode chamber and a second electrode chamber; a first electrode material accommodated in the first electrode chamber; a second electrode material accommodated in the second electrode chamber; a current collector extending in a first direction in the first electrode chamber; an extended current collector unit extending from the current collector in a second direction; and an electron channel unit on at least one of the current collector and the extended current collector unit.

Abstract: A fuel cell module includes a first unit cell including a first electrode, an electrolyte layer and a second electrode; and a second unit cell assembly connected to the first unit cell and including at least a second unit cell. In the fuel cell module, the respective fuel reaction areas of the unit cells are different from one another.

Abstract: In a method of manufacturing an SOFC, a cathode current-collecting wire is spirally wound around the outer circumferential surface of a unit cell having a cylindrical anode, a cylindrical electrolyte and a cylindrical cathode, sequentially stacked therein. In the method, the length of a portion at which the cathode current-collecting wire is wound is shorter than that of a portion at which the cathode is formed. Accordingly, the stability of the SOFC can be improved by preventing a phenomenon that the SOFC is shorted due to the breakdown of an electrolyte in the operation of the SOFC.

Abstract: A plasma display panel includes first display electrodes and second display electrodes positioned inside barriers while opposing each other. A front panel has closed-type barriers to increase fluorescent substance application area. A rear panel has stripe-type barriers to lower address voltage between the first display electrodes and address electrodes and improve emission efficiency by means of long-gap discharge. The plasma display panel uses trigger discharge during address discharge and sustain discharge to lower discharge voltage.

Abstract: A plasma display panel may include a first substrate, a second substrate opposite to the first substrate with a predetermined space therebetween, the space being partitioned into a plurality of discharge cells, a phosphor layer formed in the discharge cells, address electrodes extending in a first direction on the first substrate to correspond to the discharge cells, and a first electrode and a second electrode extending in a second direction crossing the first direction at the first substrate side, spaced apart from the address electrodes, formed opposite to each other, and projecting toward the second substrate with a discharge space formed therebetween, wherein the address electrodes include protrusions disposed adjacent to the second electrodes and protruding toward the inside of the discharge cells, and wherein at least one of the first electrode and the second electrode includes protrusions protruding toward an inside of a respective one of the discharge cells.

Abstract: A plasma display and driving method thereof. A median electrode is formed between X and Y electrodes for receiving sustain pulse voltages, and a reset waveform and a scan pulse voltage are applied to the median electrode. A short gap discharge is performed between the X electrode and the median electrode during the initial interval of a sustain interval, and a long gap discharge is performed between the X and Y electrodes during the normal sustain interval to thus perform a stable discharge. The X and Y electrode drivers are realized through comparable circuits since the waveforms applied to the X and Y electrodes are substantially symmetric.

Abstract: A plasma display panel (PDP) includes a first substrate and a second substrate spaced apart and facing each other, first barrier ribs between the first and second substrates to define a plurality of discharge cells, first and second discharge electrodes along a first direction between the first and second substrates, and address electrodes along a second direction between the first and second substrates, the address electrodes including bus portions and discharge portions electrically connected to the bus portions, wherein a distance along the second direction between a discharge portion of an address electrode and an adjacent first discharge electrode is shorter than a distance along the second direction between the discharge portion and an adjacent second discharge electrode.

Abstract: A plasma display panel (PDP) having improved light emission efficiency by minimizing blockage of emitted visible light rays includes: a first substrate and a second substrate arranged opposite to each other; a plurality of barrier ribs arranged between the first and second substrates to define two sides of closed discharge cells; first electrodes and second electrodes arranged to extend in a direction intersecting the barrier ribs to define two other sides of the closed discharge cells and alternately arranged between the discharge cells defined consecutively; phosphor layers each arranged in the discharge cells partitioned by the barrier ribs and the first and second electrodes; address electrodes arranged on the second substrate; and third electrodes arranged on the first substrate to extend in a direction intersecting the address electrodes.