Abstract: An embodiment solid electrolyte includes a first compound and a second compound. The first compound is represented by a first chemical formula Li7-aPS6-a(X11-bX2b)a, wherein X1 and X2 are the same or different and each represents F, Cl, Br, or I, and wherein 0<a?2 and 0<b<1, and the second compound is represented by a second chemical formula Li7-cP1-2dMdS6-c-3d(X11-eX2e)c, wherein X1 and X2 are the same or different and each represents F, Cl, Br, or I, wherein M represents Ge, Si, Sn, or any combination thereof, and wherein 0<c?2, 0<d<0.5, and 0<e<1.

Abstract: Electrolyte formulations for energy storage devices are disclosed. The energy storage device comprises a first electrode and a second electrode, where one or both of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, and an electrolyte composition. Electrolyte formulations as described herein are electrolyte compositions comprising two or more components such as solvents, co-solvents, salts and/or additives. In some embodiments, three or more, four or more, five or more, six or more, seven or more, or eight or more components are included in the electrolyte composition.

Abstract: A solid electrolyte membrane and method of preparing, including a plurality of polymer filaments arranged crossed as a 3-dimensional structure in the form of a net of nonwoven fabric-like shape, and a plurality of inorganic solid electrolytes inserted and uniformly distributed in the structure. By this structural feature, a large amount of solid electrolyte particles are uniformly distributed and filled in the electrolyte membrane, contact between the particles is good, and ionic conduction paths are sufficiently provided. Additionally, the durability of the solid electrolyte membrane is improved by the 3-dimensional structure, and the flexibility and strength increase. The nonwoven fabric composite solid electrolyte membrane has an effect in preventing inorganic solid electrolyte particle from being disconnected therefrom.

Abstract: An all-solid-state battery and a method of manufacturing the same are provided. The all-solid-state battery comprises an electrode assembly which is pressed and includes a positive electrode, a negative electrode, the positive electrode being thicker than the negative electrode, and a solid electrolyte layer between the positive electrode and the negative electrode; and a battery case configured to receive the electrode assembly. When the electrode assembly is pressed, an area of an electrode that directly faces a pressing portion is less than an area of an electrode that does not directly face the pressing portion.

Abstract: A negative electrode for all-solid-state battery and a lithium secondary battery including the same are provided. The negative electrode includes a negative electrode current collector formed of an electrically conductive metal material, a coating layer formed on one surface or opposite surfaces of the negative electrode current collector, the coating layer including a lithiophilic material, and an ion transport layer formed on the coating layer, the ion transport layer including amorphous carbon configured to allow lithium ions to move therethrough.

Abstract: A negative electrode for all-solid-state batteries and an all-solid-state battery including the same are provided. The negative electrode includes a coating layer disposed on a surface of a negative electrode current collector, the coating layer having ionic conductivity and electrical conductivity, and is configured such that lithium dendrites are formed between the coating layer and the negative electrode current collector, thereby preventing microscopic short circuit.

Abstract: The present disclosure relates to an electrode for a battery including a porous support and a conductive coating layer formed on at least one surface of the porous support. The electrode may be a negative electrode or a positive electrode, preferably a negative electrode. The electrode is applicable to both an all-solid-state battery and a lithium secondary battery.

Abstract: The present disclosure relates to an all-solid-state battery including a thin film current collector and a method of manufacturing the same, and more particularly to a current collector having a thickness of less than 5 µm, which is thermally treated together with a solid electrolyte, whereby interfacial resistance between the current collector and the solid electrolyte is reduced, and therefore the overall size of the all-solid-state battery is reduced.

Abstract: A negative electrode current collector and a negative electrode for a solid-state battery including the same are provided. The negative electrode current collector comprises a metal foil which is electroconductive, and a coating layer formed on a surface of the metal foil and comprising metal-carbon composite particles. The metal-carbon composite particles comprise metal particles and carbon particles and apply the metal particles evenly on the surface of the metal foil, and are capable of inducing even lithium electrodeposition between the coating layer and the metal foil, thereby forming a uniform lithium metal plating film on the negative electrode current collector.

Abstract: An electrode for a solid state battery is provided. The electrode active material layer of the electrode shows improved mechanical properties, such as elasticity or rigidity, of the electrode layer through the crosslinking of a binder resin. Thus, it is possible to inhibit or reduce the effect of swelling and/or shrinking of the electrode active material during charging/discharging. Therefore, the interfacial adhesion between the electrode active material layer and an electrolyte layer and the interfacial adhesion between the electrode active material layer and a current collector are maintained to a high level to provide a solid state battery having excellent cycle characteristics.

Abstract: A solid electrolyte membrane and method of preparing, including a plurality of polymer filaments arranged crossed as a 3-dimensional structure in the form of a net of nonwoven fabric-like shape, and a plurality of inorganic solid electrolytes inserted and uniformly distributed in the structure. By this structural feature, a large amount of solid electrolyte particles are uniformly distributed and filled in the electrolyte membrane, contact between the particles is good, and ionic conduction paths are sufficiently provided. Additionally, the durability of the solid electrolyte membrane is improved by the 3-dimensional structure, and the flexibility and strength increase. The nonwoven fabric composite solid electrolyte membrane has an effect in preventing inorganic solid electrolyte particle from being disconnected therefrom.

Abstract: A solid electrolyte membrane and method of preparing, including a plurality of polymer filaments arranged crossed as a 3-dimensional structure in the form of a net of nonwoven fabric-like shape, and a plurality of inorganic solid electrolytes inserted and uniformly distributed in the structure. By this structural feature, a large amount of solid electrolyte particles are uniformly distributed and filled in the electrolyte membrane, contact between the particles is good, and ionic conduction paths are sufficiently provided. Additionally, the durability of the solid electrolyte membrane is improved by the 3-dimensional structure, and the flexibility and strength increase. The nonwoven fabric composite solid electrolyte membrane has an effect in preventing inorganic solid electrolyte particle from being disconnected therefrom.

Abstract: The present invention relates to an electrochemical element and a method for producing same, the electrochemical element comprising: electrodes comprising a composite of active material and conductive material having a nanofiber structure; and a cellulose nanofiber separator combined with the electrodes. The electrochemical element according to the present invention obviates the need for separate binder and electrode current collector, has a stable interfacial surface due to the physical union of the separator and electrode, can assure superb mechanical and physical properties, and can maintain stable battery performance even against deformations due to a variety of external impact.

Abstract: The present invention provides an electrode assembly, which includes a first electrode, an adhesive layer disposed on the first electrode and including a host layer comprising a host and a guest layer comprising a guest, a separator disposed on the adhesive layer, and a second electrode disposed on the separator, a method of manufacturing the same, and a secondary battery including the same.

Abstract: Disclosed is a method for manufacturing a solid electrolyte membrane for a solid-state battery and a solid electrolyte membrane obtained thereby. The solid electrolyte membrane for a solid-state battery includes a heat treated porous polymer sheet and a solid electrolyte material, wherein solid electrolyte material and the porous polymer sheet form a composite in such a manner that the pores of the porous polymer sheet is filled with the solid electrolyte material. In this manner, it is possible to provide a solid electrolyte membrane for a solid-state battery which has high mechanical strength and high ion conductivity.

Abstract: An electrode assembly for a solid state battery includes a positive electrode, a negative electrode and a solid electrolyte layer interposed between the positive electrode and the negative electrode. In addition, the binder disposed at the interface between the negative electrode and the solid electrolyte layer, the interface between the positive electrode and the solid electrolyte layer and/or at a predetermined depth from the interface is crosslinked to form a three-dimensional network. In other words, in the electrode assembly, the binder contained in the negative electrode and the solid electrolyte layer and/or the binder contained in the positive electrode and the solid electrolyte layer is crosslinked to improve the interfacial binding force between the negative electrode and the solid electrolyte layer and/or between the positive electrode and the solid electrolyte layer, and thus ion conductivity is maintained to a significantly high level.

Abstract: An electrode for an all solid type battery is designed such that fibrous carbon materials serving as a conductor are densely arranged crossed into a 3-dimensional structure in the form of a mesh of a nonwoven fabric-like shape, and an inorganic solid electrolyte and electrode active material particles are impregnated and uniformly dispersed in the structure. By this structural feature, the electrode for an all solid type battery has very good electron conductivity and ionic conductivity.

Abstract: The teachings herein relate to a gel polymer electrolyte, manufacturing of a gel polymer electrolyte, and an electrochemical device including the gel polymer electrolyte. The present gel polymer electrolyte preferably includes a multi-component crosslinked polymer matrix; a dissociable salt; and an organic solvent. The content of the multi-component crosslinked polymer matrix preferably is 1 to 50 weight percent and preferably has a net structure formed by crosslinking at least three different kinds of cross-linkable monomers. Each of the cross-linkable monomers preferably includes at least two of the following functional groups: a carboxylic group, an acrylate group, or a cyano group. The method of manufacturing the gel polymer electrolyte preferably uses a thermal crosslinking or photo-crosslinking process.

Abstract: The present invention relates to a method of preparing a lithium secondary battery which may improve productivity and performance of the lithium secondary battery by visually measuring an actual electrolyte solution impregnation time for an electrode active material, setting an estimated impregnation time of the electrolyte solution for a battery based on a measured result, and reflecting the estimated impregnation time in a production process.

Abstract: An electrolyte complex for a lithium-sulfur battery, which can improve battery capacity and life characteristic by applying different solid electrolytes to each of the positive electrode and the negative electrode of an electrochemical device, and can reduce the interfacial resistance between the electrolyte and the electrode by integrating the solid electrolyte and the electrode; an electrochemical device including the same; and a method for preparing the same. The electrolyte complex for a lithium-sulfur battery includes a first and a second phase-separated solid electrolytes, wherein the first electrolyte positioned to the positive electrode side and the second electrolyte positioned to the negative electrode side form a layered structure.