Abstract: Disclosed is a method of manufacturing a solid electrolyte for an all-solid battery. The method may include preparing a solvent admixture comprising a first polar organic solvent containing a cyano group and a second polar organic solvent containing a hydroxyl group, preparing an electrolyte admixture by dissolving Li2S, P2S5 and LiCl in the solvent admixture, and preparing a solid electrolyte by stirring the electrolyte admixture. The method may further include precipitating the solid electrolyte by evaporating the solvent admixture, and heat treating the precipitated solid electrolyte. In particular, the solvent admixture may include the second polar organic solvent in an amount of about 0.01 to 0.03 wt % based on the total weight of the first polar organic solvent.

Abstract: Disclosed is a method of manufacturing an all-solid state battery. The method includes coating a first slurry or composition having on a substrate to form a first electrolyte layer a predetermined thickness, coating a second slurry or composition on the first electrolyte layer to form a second electrolyte layer having a predetermined thickness, laminating an electrode layer on the second electrolyte layer, bonding the electrode layer to the second electrolyte layer through pressing, and removing the substrate from the first electrolyte layer. The first slurry or composition of the first electrolyte layer has content of a binder less than that of the second slurry or composition of the second electrolyte layer, and thus, the substrate may be easily removed from the first electrolyte layer.

Abstract: The present invention provides a silicon nanowire structure embedded in nickel silicide nanowires for lithium-based battery anodes and anodes including the same. In particular, a Si nanowire structure embedded in NiSix nanowires according to the present invention may provide a solution to a problem, such as disconnection of Si nanowires from a current collector shown when the Si nanowires are expanded by alloying with Li or contracted during the use of a battery, and the like, by flexibly embedding the Si nanowires in the NiSix nanowires.

Abstract: Provided is an electrode active material slurry including a clustered complex and a slurry, wherein the clustered complex includes an electrode active material, a solid electrolyte, a conductive material, and a first binder, and the slurry includes a solvent and a second binder. The electrode active material slurry may include the clustered complex including the first binder and the slurry including the second binder so as to decrease a surface area of the overall complex, such that adhesion property with the current collector may be sufficiently secured even by using a small amount of binder, and performance of the all-solid secondary battery may be further improved.

Abstract: A pouch battery having improved overcharging safety includes a CID interrupting an electrical connection between an electrode assembly and a lead tab when the pouch is expanded. When the pouch is expanded, the CID discharges gas generated inside the pouch to the outside, and at the time of overcharging a secondary battery, the CID interrupts a flow of current introduced into the secondary battery and discharges the gas generated due to the overcharging to the outside of the pouch, thereby reducing an ignition risk and improving the overcharging safety.

Abstract: Disclosed is an all-solid battery, including a cathode, an anode, and a solid electrolyte layer. The solid electrolyte layer may include a first solid electrolyte having an ionic conductivity ranging from greater than about 5×10?3 S/cm to about 1×10?1 S/cm and a second solid electrolyte having an ionic conductivity ranging from greater than about 5×10?4 S/cm to about 1×10?2 S/cm.

Abstract: The present invention relates to a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries. The a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries includes a compound with an argyrodite-type crystal structure represented by the following Formula 1: LiaPSbNcXd??[Formula 1] wherein 6?a?7, 3<b<6, 0<c?1, 0<d?2, and each X is the same or different halogen atom selected from the group consisting of chlorine (Cl), bromine (Br), and iodine (I).

Abstract: Disclosed is a solid electrolyte for an all-solid battery and a method of preparing the same. Particularly, the solid electrolyte may have an argyrodite-type crystal structure.

Abstract: An overcharge safety device includes a switch electrically connecting a lead tap of a battery cell with a bus bar, and includes a guide member connected with the switch and movable as a pouch of the battery cell swells. As the pouch of the battery cell swells, the guide member moves toward the bus bar to disconnect the switch from the lead tap.

Abstract: The present invention provides a silicon nanowire structure embedded in nickel silicide nanowires for lithium-based battery anodes and anodes including the same. In particular, a Si nanowire structure embedded in NiSix nanowires according to the present invention may provide a solution to a problem, such as disconnection of Si nanowires from a current collector shown when the Si nanowires are expanded by alloying with Li or contracted during the use of a battery, and the like, by flexibly embedding the Si nanowires in the NiSix nanowires.

Abstract: Disclosed is a method of preparing a sulfide-based solid electrolyte for an all-solid battery having an argyrodite-type crystal structure through a solution process. The method including obtaining a precursor solution by dissolving lithium sulfide, phosphorus sulfide and a halogen compound in a solvent, obtaining a precursor powder by removing the solvent from the precursor solution. Solid electrolyte for an all-solid battery can be produced by such method.

Abstract: A method of manufacturing the all-solid battery includes steps of: forming a cathode layer; forming an anode layer; forming an electrolyte layer between the cathode layer and the anode layer; and forming an insulation layer using a baroplastic polymer at an edge portion of the battery. The step of forming the insulation layer comprises: forming a coating layer through coating of the edge portion of the battery with the baroplastic polymer; and shaping the baroplastic polymer through pressing of the coating layer.

Abstract: An electrode composition includes at least two electrode active materials having different crushing strengths and particle sizes. An electrode includes at least two electrode active materials having different crushing strengths and particle sizes, and the at least two electrode active materials include a first active material and a second active material, the first active material having a higher crushing strength than that of the second active material, and the first active material having a larger particle size than that of the second active material. A lithium secondary battery includes an anode which is an electrode including at least two electrode active materials having different crushing strengths and particle sizes.

Abstract: An all-solid-state battery includes: a cathode substrate; a cathode portion; a solid electrolyte layer; an anode portion; and an anode substrate. The cathode portion includes a cathode active material, a first solid electrolyte, a conductive material, and a binder, the anode portion is configured by a first anode portion having a pore structure and a second anode portion having metal foil, and the first anode portion includes a second solid electrolyte, a conductive material, and a binder.

Abstract: A swelling current interrupt device (CID) includes: a battery unit connection terminal configured to be fixed to a pouch; and a lead tab connection terminal configured to be fixed to the pouch and electrically connected to the battery unit connection terminal, wherein any one of the battery unit connection terminal and the lead tab connection terminal is broken by an expansion force of the pouch which is generated when the pouch expands to interrupt the electrical connection between the battery unit connection terminal and the lead tab connection terminal.

Abstract: The present disclosure relates to a battery cell. The battery cell includes: an electrode assembly; a pouch which wraps around the electrode assembly; an electrode tab extended from the electrode assembly; a lead tab attached to the electrode tab; and a current interrupt device which is configured to block reconnection of the lead tab and the electrode tab when the pouch is shrunk to return to an original position after being expanded, while blocking current flow by separating the lead tab and the electrode tab through the expansion of the pouch, when abnormal situation of battery cell occurs.

Abstract: Disclosed are an all-solid-state battery and a method of manufacturing the same, in which lithium ions that are consumed in an initial side reaction are supplemented by artificially increasing the amount of added lithium salt during an electrode manufacturing process, and an interface between electrodes is stabilized. The all-solid-state battery includes a cathode active material; an anode active material; and a solid electrolyte, wherein the amount of the solid electrolyte is determined by the sum of a target amount of the solid electrolyte, the target amount being set corresponding to the amounts of the cathode active material and the anode active material, and an additional amount of the solid electrolyte, wherein the additional amount of the solid electrolyte is equal to or less than 1.5 parts by weight (excluding 0 parts by weight) based on 100 parts by weight of the target amount of the solid electrolyte.

Abstract: A battery cell includes: an electrode assembly; a pouch case accommodating the electrode assembly therein; and an electrode lead including an outer lead protruding to an outside of the pouch case and an inner lead disposed between the outer lead and the electrode assembly, accommodated in the pouch case, bent plural times in a direction in which it connects the electrode assembly and the outer lead to each other, and cut by expansion force of the pouch case.

Abstract: An improved, low porosity, solid electrolyte membrane and a method of manufacturing the solid electrolyte membrane are provided. The low porosity, solid electrolyte membrane significantly improves both mechanical strength and porosity of the membrane, inhibits the growth of lithium dendrites (Li dendrites), and thereby maintains and maximizes electrochemical stability of an all-solid-state battery. This is accomplished by wet-coating a sulfide or oxide solid electrolyte particle with a thermoplastic resin, or a mixture of the thermoplastic resin and a thermosetting resin, using a solvent to prepare a composite and hot-pressing the composite at a relatively low temperature and at a low pressure.

Abstract: A method of manufacturing a short-preventive all-solid-state battery in which a thermosetting insulating resin applied in advance to a pouch-type electrode case provided with an electrode assembly received therein is forced to fill a space between the edges of the electrode assembly during packaging of the electrode assembly to fill vacant spaces between electrodes at the edges of the electrode assembly and may thus prevent physical contact and collision between the electrodes and fundamentally prevent generation of a short circuit caused thereby.