Abstract: A battery balancing system includes a battery pack block configured in rows and columns of batteries, a balancing block with balancing devices corresponding to the batteries, a balancing control block with control circuits that selectively connect batteries and balancing devices to perform balancing. The control circuits enable connections between a battery and its corresponding or adjacent balancing devices, or between adjacent batteries and corresponding balancing devices, based on control signals. The system further includes a state determination block that determines the state of batteries on a column basis, and a system controller that activates selected rows and controls the balancing connections based on the state determination result.

Abstract: Provided is a binder solution for an all-solid-state battery, and a binder solution for an all-solid-state battery according to some embodiment of the inventive concept may include a solvent including anisole, and a binder including an acrylonitrile-butadiene rubber containing an acrylonitrile repeating unit and a butadiene repeating unit. The acrylonitrile repeating unit may amount to 31 to 35 parts by weight with respect to 100 parts by weight of the acrylonitrile-butadiene rubber.

Abstract: Provided are a solid electrolyte membrane, an all-solid-state battery including the same and methods of manufacturing thereof. The solid electrolyte membrane includes a texture-type support having oppositely disposed first side and second side, and having multiple pores inside thereof, and a solid electrolyte filling up the pores and covering at least one side of the support, wherein the support may include a lithium salt, a polymer material or a first solid electrolyte material, or combinations thereof, and show ion conductivity. The solid electrolyte may include a second solid electrolyte material.

Abstract: Provided is a lithium secondary battery, wherein the lithium secondary battery includes a first electrode, a second electrode spaced apart from the first electrode, and a solid electrolyte disposed between the first electrode and the second electrode. The solid electrolyte includes a fiber including polytetrafluoroethylene having a number average molecular weight of 500 kg/mol to 20,000 kg/mol, and a plurality of sulfide particles. The fiber is in contact with at least some of the sulfide particles.

Abstract: An all-solid-state battery includes a first solid electrolyte layer on the first electrode, a porous adhesive structure on the first solid electrolyte layer, a second solid electrolyte layer on the porous adhesive structure, and a second electrode on the second solid electrolyte layer. The porous adhesive structure has a porous frame with two surfaces, each covered with adhesive layers partially filling pores of the porous frame. The first adhesive layer contacts the porous frame and the first electrolyte layer, while the second adhesive layer contacts the porous frame and the second solid electrolyte layer. The first and the second solid electrolyte layers include binders, each having a content about 0.1% to about 5% by weight.

Abstract: Provided is an anodeless electrode, and more particularly, to an anodeless electrode including a current collector, and a conductive flexible thin-film layer disposed on the current collector. The conductive flexible thin-film layer includes a conductive polymer, a soft polymer, and metal nanoparticles. The metal nanoparticles have a diameter of about 20 nm to about 100 nm, and are contained in an amount of about 20 wt % to about 50 wt % with respect to the sum of weights of the conductive polymer and the soft polymer.

Abstract: Provided is a method of preparing a coating composition for a separator of a secondary battery, and particularly a method including dispersing a first monomer and a surfactant in a solvent to form micelles, adding a first initiator to the solvent and performing first polymerization reaction to form a precursor solution including an emulsion-type binder, and adding a second monomer and a second initiator to the precursor solution and performing second polymerization reaction to form an aqueous binder solution including a solution-type binder, wherein the emulsion-type binder has a core shape, the solution-type binder has a shell shape wrapping the emulsion-type binder, and the emulsion-type binder and the solution-type binder are chemically bonded.

Abstract: Provided is a nano structure for controlling optical properties of an optical device. The nano structure includes a substrate, a surface modification layer provided on the substrate to modify surface energy of the substrate, and a capping layer provided on the surface modification layer. The capping layer includes a convex portion having a convex profile away from the surface modification layer and a concave portion that is in contact with the surface modification layer.

Abstract: Provided is a lithium secondary battery including a first electrode, a second electrode spaced apart from the first electrode, a solid electrolyte disposed between the first electrode and the second electrode, wherein the solid electrolyte includes a fibril and a plurality of sulfide particles, the fibril includes polytetrafluoroethylene, the fibril surrounds at least some of the sulfide particles or is in contact with at least some of the sulfide particles.

Abstract: Provided are a solid electrolyte membrane, an all-solid-state battery including the same and methods of manufacturing thereof. The solid electrolyte membrane includes a texture-type support having oppositely disposed first side and second side, and having multiple pores inside thereof, and a solid electrolyte filling up the pores and covering at least one side of the support, wherein the support may include a lithium salt, a polymer material or a first solid electrolyte material, or combinations thereof, and show ion conductivity. The solid electrolyte may include a second solid electrolyte material.

Abstract: Provided is a secondary battery including: a first electrode structure; a second electrode structure spaced apart from the first electrode structure; a separator between the first electrode structure and the second electrode structure; and an electrolyte filled between the first electrode structure and the separator and between the second electrode structure and the separator, wherein the separator includes: a separator substrate; a polymer layer adsorbed on a surface of the separator substrate; and a ceramic layer on the polymer layer, the polymer layer including a polyethyloxazoline-based polymer, and the ceramic layer including an aqueous binder.

Abstract: The present invention relates to a CHO cell-derived protein secretory factor, an expression cassette in which a nucleic acid sequence encoding the protein secretory factor; and a gene encoding a target protein are operably linked, an expression vector comprising the expression cassette, a transformed cell into which the expression vector is introduced, and a method for producing a target protein using the transformed cell.

Abstract: A composition of aqueous slurry capable of exerting uniform coating on a hydrophobic separator for a secondary battery is disclosed. Unlike other aqueous polymers, a polyvinyl alcohol-based polymer can be physically and chemically bound to a surface of a hydrophobic separator made of polyolefins such as polyethylene, polypropylene, and the like. Therefore, when the aqueous slurry including the polyvinyl alcohol-based polymer is fabricated and a hydrophobic separator is coated with the aqueous slurry, the hydrophobic separator may be smoothly coated with the aqueous slurry.

Abstract: Provided is a cellulose derivative composition for an all-solid-state secondary battery binder including a compound represented by Formula 1 below according to the inventive concept. In Formula 1, R1, R1?, R2, R2?, R3, and R3? are each independently any one among a carboxymethyl group, a sulfur substituent, or a phosphorus substituent, in which a monovalent metal is substituted or hydrogen, wherein R1, R2, and R3 is —CH2COOX, , SO3X, —PO3X or —PO3X2 where X may be any one among sodium (Na), potassium (K), rubidium (Rb), or cesium (Cs). R1?, R2?, and R3? is —CH2COOY, —SO3Y, —PO3Y or —PO3Y2 where Y may be lithium (Li).

Abstract: An all-solid-state battery for an ion-conducting binder evaluation system for a secondary battery may comprise: an electrode manufactured with an electrode composition, which includes electrode active materials and a binder, so that ion transport in the electrode is dependent on a mechanism of ion diffusion between the electrode active materials by excluding an electrolyte component from the electrode; a counter electrode disposed to face the electrode; and a solid electrolyte layer disposed between the electrode and the counter electrode, wherein a pore density of the electrode, which is an electrolyte-free electrode, is less than or equal to 15% of an electrode bulk density.

Abstract: Disclosed are a biometric device and a biometric system including the same. The device includes a biogenic-synthesized film, a reflective layer disposed on one side of the biogenic-synthesized film, a light source disposed on the reflective layer to generate light, a beam splitter disposed between the light source and the reflective layer to provide the light to the reflective layer and another side of the biogenic-synthesized film, and a light switching layer disposed between the beam splitter and the reflective layer to switch the light provided to the reflective layer.

Abstract: Provided is a pressure sensitive display device including a sensing substrate, a reaction substrate provided on the sensing substrate, and spacers provided between the sensing substrate and the reaction substrate to space the sensing substrate apart from the reaction substrate. Here, the sensing substrate includes a flexible substrate and a touch electrode provided on one surface of the flexible substrate, which faces the reaction substrate. The reaction substrate includes a transparent substrate, a transparent electrode provided on one surface of the transparent substrate, which faces the sensing substrate, and a light emitting layer disposed on the transparent electrode.

Abstract: A multi-additive electrolyte composition for a lithium ion secondary battery includes a lithium salt; at least one organic solvent; and a combination of additives including each of: vinylene carbonate (VC), fluoroethylene carbonate (FEC), lithium diflurobis(oxalate)phosphate (LiDFBP), and adiponitrile (ADN), e.g., wherein VC is present at 0.5 to 5%; FEC is present at 1 to 10%; LiDFBP is present at 0.5 to 5%; and ADN is present at 0.3 to 3% by weight, based on total electrolyte composition weight. A lithium ion secondary battery includes a positive electrode having an active cathode material including a nickel-cobalt-manganese composition; a negative electrode having an active anode material including silicon and graphite; a separator interposed between the positive electrode and the negative electrode; and the aforementioned multi-additive electrolyte composition. A large electric vehicle (EV) 48 Ah cell using such a multi-additive electrolyte composition achieved 80% capacity retention at 1,511 cycles.

Abstract: Provided is a nano structure for controlling optical properties of an optical device. The nano structure includes a substrate, a surface modification layer provided on the substrate to modify surface energy of the substrate, and a capping layer provided on the surface modification layer. The capping layer includes a convex portion having a convex profile away from the surface modification layer and a concave portion that is in contact with the surface modification layer.

Abstract: Provided is a method of preparing a coating composition for a separator of a secondary battery, and particularly a method including dispersing a first monomer and a surfactant in a solvent to form micelles, adding a first initiator to the solvent and performing first polymerization reaction to form a precursor solution including an emulsion-type binder, and adding a second monomer and a second initiator to the precursor solution and performing second polymerization reaction to form an aqueous binder solution including a solution-type binder, wherein the emulsion-type binder has a core shape, the solution-type binder has a shell shape wrapping the emulsion-type binder, and the emulsion-type binder and the solution-type binder are chemically bonded.