Abstract: A rechargeable battery according to an exemplary embodiment of the present invention includes: an electrode assembly which is wound and includes a first electrode, a second electrode, and a separator interposed between the first electrode and the second electrode; a casing which accommodates the electrode assembly; a first electrode tab which is connected to a non-coated portion of the first electrode; a second electrode tab which is connected to a non-coated portion of the second electrode; and a first insulating tape which is positioned at a winding start portion of the electrode assembly and attached to the non-coated portion of the first electrode so as to at least cover a center of a first curved portion which is curvedly formed as the electrode assembly is wound.

Abstract: An electrode assembly includes: a first electrode plate having a first electrode uncoated portion spaced apart from both ends in a longitudinal direction thereof, and a base tab on one surface of the first electrode uncoated portion; a second electrode plate having a second electrode uncoated portion spaced apart from both ends in a longitudinal direction thereof, and a base tab on one surface of the second electrode uncoated portion; a separator between the first electrode plate and the second electrode plate; a tab cover tape attached to the one surfaces of the first electrode uncoated portion and the second electrode uncoated portion; an uncoated portion cover tape attached to each of the other surfaces of the first electrode uncoated portion and the second electrode uncoated portion; and an insulating tape attached onto the second electrode plate at a position corresponding to the first electrode uncoated portion.

Abstract: A solid oxide electrolyzer electrolyte composition includes a scandia and ceria stabilized zirconia, containing 5 to 12 mol % scandia, 1 to 7 mol % ceria, and 80 to 94 mol % zirconia, or a yttria and ceria stabilized zirconia containing 3 to 10 mol % yttria, 1 to 6 mol % ceria, and 84 to 96 mol % zirconia.

Abstract: Embodiments described herein relate generally to systems and methods for continuously and/or semi-continuously manufacturing electrochemical cells with semi-solid electrodes. In some embodiments, a method can include mixing an active material, a conductive material, and an electrolyte to form a semi-solid electrode material. The method further includes drawing a vacuum on the semi-solid electrode material, compressing the semi-solid electrode material to form an electrode brick, and dispensing a portion of the electrode brick onto a current collector via a dispensation device to form an electrode. In some embodiments, the current collector is disposed on a pouch material. In some embodiments, the dispensation device includes a top blade for top edge control and two side plates for side edge control. In some embodiments, the method can further include conveying the electrode through the top blade and the two side plates to shape the electrode.

Abstract: A secondary battery includes: an anode including an anode active material on an anode active material support; a cathode including a cathode active material on a cathode active material support; a separator between the anode and the cathode; an anode guide extending in a first direction from a first region along an edge of the anode active material support; and a cathode guide extending in a second direction from a second region along an edge of the cathode active material support.

Abstract: A lithium ion secondary battery that includes: a positive electrode having a positive electrode active material capable of storing and releasing lithium ions, the positive electrode active material containing positive electrode active material grains having a coating layer containing a carbon compound having an acid functional group, and an amount of the acid functional group in a composite including the positive electrode active material and the coating layer is 0.004 mmol/g to 0.0062 mmol/g; a negative electrode having a negative electrode active material capable of storing and releasing lithium ions; a separator interposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte containing a polar solvent having a relative permittivity of 20 or more.

Abstract: An electrolyte composition and a lithium secondary battery including the same are disclose herein. The electrolyte composition has improved high temperature safety. In some embodiments, the electrolyte composition includes an additive including a compound represented by Formula 1. Each R1 is independently a single bond, an alkylene group having 1 to 10 carbon atoms, or each R2 is independently a double or triple bond including 2 carbon atoms, each R3 is independently hydrogen or an alkyl group having 1 to 4 carbon atoms, and a is an integer of 1 to 10. The additive may reinforce an SEI layer on the surface of an electrode, thereby having advantages of improved storage and lifetime characteristics at a high temperature and a decreased amount of gas generated in the battery.

Abstract: Provided is a technique capable of suppressing movement of an electrode body inside an exterior body. According to the technique disclosed herein, a sealed battery is provided, which includes an electrode body having a wide face having a rectangular shape, an exterior body made of a laminated film, and positive electrode and negative electrode current collector terminals. The exterior body includes a housing part housing the electrode body, and a sealed part formed around the housing part to isolate the inside and the outside of the exterior body from each other. The housing part has a flat face facing the wide face of the electrode body and four side walls corresponding to four sides of the wide face respectively, the four side walls being formed so as to rise from the sealed part toward the flat face. A pair of the side walls corresponding to long sides of the wide face curves toward the electrode body and inward of the exterior body so as to closely approach the electrode body.

Abstract: A battery includes a positive electrode, a negative electrode, and a separator. The negative electrode forms a honeycomb core. The honeycomb core includes a first face, a second face, a partition, and a circumferential wall. The second face faces the first face. The partition is formed between the first face and the second face. The partition extends in a grid pattern to separate a plurality of hollow cells. The circumferential wall surrounds a circumference of the partition. The separator includes a first layer and a second layer. The first layer covers at least part of the partition. The second layer covers at least part of the first face and the second face. The positive electrode includes a first region and a second region. The first region is inserted in the hollow cells. The second region extends outwardly beyond the second layer of the separator.

Abstract: In the case in which a lithium metal is used in order to increase the capacity of a lithium secondary battery, reversibility of charging and discharging is reduced due to dendrite, etc. A lithium metal having LiF deposited thereon exhibits high stability, whereby reversibility of charging and discharging is increased. In addition, in the case in which LiF is deposited, the lithium metal, which is a negative electrode material, is not consumed, and the shape of a lithium metal electrode is not greatly changed.

Abstract: A battery pack includes a stack of a plurality of battery cells each including positive and negative electrode lead tabs led out of a laminate film casing, and a coupling assisting member. The coupling assisting member includes a conductive plate member fixing portion that fixes a conductive plate member having first and second main surfaces in a front-to-back relationship. Either one of the positive and negative lead tabs of one battery cell is conductively connected to the first main surface of the conductive plate member. A lead tab of a battery cell adjoining the one battery cell, having a polarity different from that of the lead tab of the one battery cell, is inserted through the second slit portion and conductively connected to the second main surface of the conductive plate member. Vibration transmission ratio changing bends are provided on the lead tabs.

Abstract: Provided is a lithium secondary battery with improved t electrochemical characteristics through improvement of the structural stability by including a cathode active material doped with molybdenum (Mo). The lithium secondary battery includes a cathode; an anode; a separator positioned between the cathode and the anode; and an electrolyte. In particular, the cathode active material includes molybdenum (Mo) doped on a composite oxide of lithium and metal including manganese (Mn) and titanium (Ti).

Abstract: A composition to form a porous insulating layer on an active material layer on a main surface of a current collector current collector is provided. The active material layer includes an active material to electrochemically intercalate and deintercalate lithium ions and an active material layer binder, the composition to form the porous insulating layer includes a solvent including an organic solvent, an insulating inorganic particle, and a binder, and the binder is a polymer obtained by polymerization of monomers including about 30 wt % to about 60 wt % of an aromatic vinyl compound, about 20 wt % to about 69 wt % of (meth)acrylic acid ester, about 5 wt % to about 35 wt % of (meth)acrylic acid ester including a hydroxy group or an ether group, and about 1 wt % to about 10 wt % of a vinyl compound including an acidic functional group, based on a total weight of the binder.

Abstract: This application relates to the field of energy storage components, and in particular, to a protective plate, a battery unit assembly, a battery module group, and a vehicle. The protective plate is provided with a guide groove. The protective plate is configured to shield an explosion-proof valve of a battery cell. The guide groove is configured to be disposed corresponding to the explosion-proof valve, and is configured to guide a flow direction of a flame ejected from the explosion-proof valve. In this application, the guide groove is disposed on the protective plate to guide the flame to a direction away from passengers, thereby protecting the passengers from injury.

Abstract: A pre-lithiated silicon-based anode includes a silicon-based anode, lithium disposed on a surface or in an interior of the silicon-based anode, and a protective coating on the surface of the silicon-based anode. The pre-lithiated silicon-based anode allows subsequent processing to be performed safely in the atmosphere.

Abstract: The invention features redox flow batteries and compound useful therein as negolytes or posolytes. The batteries and compounds are advantageous in terms of being useable in water solutions at neutral pH and have extremely high capacity retention. Suitable negolytes are diquaternized bipyridines, suitable posolytes are water-soluble ferrocene derivatives.

Abstract: A positive electrode includes at least a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is disposed on a surface of the positive electrode current collector. The positive electrode current collector includes an aluminum foil and an aluminum hydrated oxide film. The aluminum hydrated oxide film covers a surface of the aluminum foil. The aluminum hydrated oxide film has a thickness not smaller than 50 nm and not greater than 500 nm. The aluminum hydrated oxide film contains a plurality of types of aluminum hydrated oxides. The ratio of boehmite to the plurality of types of aluminum hydrated oxides is not lower than 20 mol % and not higher than 80 mol %.

Abstract: Each cell forming a battery stack has a discharge valve configured to discharge gas in the inside to the outside when an internal pressure increases. A case houses the battery stack. A plate member is provided between each discharge valve and an upper case. The plate member is arranged to overlap with each discharge valve when the battery stack and the plate member are planarly viewed from above.

Abstract: This disclosure details exemplary battery pack designs for use in electrified vehicles. An exemplary battery pack may include a multi-piece enclosure assembly and an urethane based adhesive. The urethane based adhesive may function as both a fastener for securing the enclosure assembly components together and as a seal for blocking the ingress of moisture into the interior of the battery pack. Associated battery pack assembly methods are also disclosed.

Abstract: An electrochemical cell includes a cylindrical housing that encloses an interior space having a first end face and a second end face that are interconnected by an annular shell, and a positive and a negative electrode are arranged in the interior of the housing, wherein the negative electrode is electrically connected, either directly or via a separate conductor, to the first end face to constitute a negative pole, and the positive electrode is electrically connected, either directly or via a separate conductor, to the second end face to constitute a positive pole, and a contact lug is fastened to the first or second end face of the housing.