Abstract: The present invention relates to a method for evaluating physical properties of a thin film specimen and a thin film specimen for a tensile test of the present invention, and according to the present invention, reliability of measured physical properties can be increased, and an abnormal damage of a thin film specimen can be suppressed by analyzing the strain rate of a speckle pattern formed on the thin film specimen by using a digital image correlation analysis scheme during a tensile test of the thin film specimen.

Abstract: A slurry mixer and a slurry extrusion device including the same are disclosed. A slurry mixer includes an inner mixer pipe including a mixer inlet through which a slurry is to be introduced and a mixer outlet through which the slurry is to be discharged, a mesh in the inner mixer pipe and configured to be in contact with the slurry introduced through the mixer inlet, a chopper between the mesh part and the mixer outlet and rotatable about a rotary shaft to shear the slurry, and a distributor between the chopper and the mixer outlet, rotatable about the rotary shaft in a first rotation direction, and configured to stir the slurry.

Abstract: A polymer electrolyte for a lithium secondary battery according to the embodiments of the present disclosure includes a fluorine-based solvent including a fluorine-containing cyclic carbonate, a fluorine-containing linear carbonate, and a fluorine-containing ether; a lithium salt; and a flame retardant polymer containing phosphorus and fluorine, wherein the content of the fluorine-containing cyclic carbonate, based on the total volume of the fluorine-based solvent, is greater than 20 vol % and less than or equal to 40 vol %.

Abstract: A mixing device for a secondary battery, the mixing device including a container part storing a slurry, a driving part configured to rotate the container part, and a mixing jig part in the container part, wherein the slurry has a stirring hole therein, the mixing jig part creating the stirring hole in the slurry, the stirring hole increasing a contact area of the slurry for an additive.

Abstract: The present disclosure relates to an organic-inorganic composite membrane for a secondary battery including: a porous matrix containing a fluorine-based copolymer and lithium-lanthanum-zirconium-based oxide particles; and a crosslinked network polymer electrolyte filling one or more pores of the porous matrix, wherein the fluorine-based copolymer contains 10 to 25 wt % of a hexafluoropropylene-derived repeating unit, a method for manufacturing the same, and a lithium secondary battery including the same.

Abstract: A lithium secondary battery according to embodiments of the present disclosure includes an anode, a cathode disposed opposite the anode, and an electrolyte. The anode includes a lithium metal layer and a solid electrolyte interphase (SEI) layer disposed on the lithium metal layer. The anode has a first peak ratio of 1 to 7.

Abstract: A monomer for an electrolyte according to the embodiments of the present disclosure may include a compound represented by Formula 1. The lithium secondary battery according to the embodiments of the present disclosure includes a cathode, an anode, and an electrolyte, and the electrolyte may include a polymer formed by polymerizing the compound represented by Formula 1.

Abstract: A polymer electrolyte membrane for a lithium secondary battery according to the present disclosure includes a copolymer. The copolymer include a main chain including a first repeating unit and a second repeating unit, a fluoroalkyl group bonded as a side chain to the main chain, and a polymer segment bonded as a side chain to the main chain and containing oxygen. A lithium secondary battery according to the present disclosure includes the polymer electrolyte membrane for a lithium secondary battery.

Abstract: A polymer electrolyte membrane for a lithium secondary battery according to the present disclosure includes a copolymer. The copolymer includes a main chain including a first repeating unit and a second repeating unit, a fluoroalkyl group bonded as a side chain to the main chain, and a nitrogen-based cationic functional group bonded as a side chain to the main chain via a linker. A lithium secondary battery according to the present disclosure includes the polymer electrolyte membrane for a lithium secondary battery.

Abstract: Provided is an organic and inorganic composite polymer electrolyte and an all-solid-state battery including the same, and provided is an organic and inorganic composite polymer electrolyte including a flame-retardant polymer and a flame-retardant inorganic salt with a shear modulus of 7 to 60 GPa, and an all-solid-state battery including the organic and inorganic composite polymer electrolyte.

Abstract: A composition for forming a solid electrolyte according to embodiments of the present disclosure includes: a liquid electrolyte including a solvent containing a nitrile compound having an ether group and a lithium salt; inorganic electrolyte particles; and a monomer having a polymerizable functional group. A solid electrolyte according to embodiments of the present disclosure includes a nitrile compound having an ether group, a lithium salt, inorganic electrolyte particles, and a polymer.

Abstract: A composition for forming a solid electrolyte according to embodiments of the present disclosure includes: a liquid electrolyte including a solvent containing a nitrile compound having an ether group, a first lithium salt including a borate compound, and a second lithium salt different from the first lithium salt; and a monomer having a polymerizable functional group. A solid electrolyte according to embodiments of the present disclosure includes a nitrile compound having an ether group, a first lithium salt including a borate compound, a second lithium salt different from the first lithium salt, and a polymer.

Abstract: A monomer for an electrolyte according to the embodiments of the present disclosure may include a compound represented by Formula 1. The lithium secondary battery according to the embodiments of the present disclosure includes a cathode, an anode, and an electrolyte layer, and the electrolyte layer may include a polymer formed by polymerizing the compound represented by Formula 1.

Abstract: An internal short circuit induction apparatus for a battery. The internal short circuit induction apparatus includes an electrode assembly including a positive electrode, a negative electrode, and a separator between the positive electrode and the negative electrode. The apparatus further includes a pressing unit movably located above the electrode assembly, a support unit located under the electrode assembly, the support unit being fixed at a position and configured to support the electrode assembly, and a pulling unit configured to pull a separator cover to remove the separator cover from the electrode assembly. The separator includes an opening.

Abstract: Provided is an organic and inorganic composite polymer electrolyte and an all-solid-state battery including the same, and provided is an organic and inorganic composite polymer electrolyte including a flame-retardant polymer and a flame-retardant inorganic salt with a shear modulus of 7 to 60 GPa, and an all-solid-state battery including the organic and inorganic composite polymer electrolyte.

Abstract: A monomer for an electrolyte according to the embodiments of the present disclosure may include a compound represented by Formula 1. A lithium secondary battery according to the embodiments of the present disclosure includes a cathode, an anode, and an electrolyte, wherein the electrolyte may include a polymer of the compound represented by Formula 1. wherein X1, X2 and X3 are each independently a halogen element, R1, R2 and R3 are each independently hydrogen, a halogen element, a substituted or unsubstituted C1 to C6 alkyl group, or a polymerizable group, and at least one of R1, R2 or R3 is a polymerizable group.

Abstract: An electrode drying device includes a chamber through which an electrode plate is passable, and an upper adjustment unit in the chamber and configured to adjust hot air above the electrode plate to prevent non-uniform drying of the electrode plate due to a difference in flow rate.

Abstract: The present invention relates to an ultrasound-based microparticle trapping and stimulation device. A transducer array system, according to the present invention, focuses high-intensity ultrasonic waves in a focal region, and at the same time, has an outstandingly excellent effect of being capable of capturing microparticles by means of low pressure inside a pressure field, and thus may be used in various medical fields.

Abstract: Provided are a novel boron-containing compound and an electrolyte solution additive for a secondary battery including the same. The electrolyte solution for a secondary battery provided in one embodiment includes the novel boron-containing compound, thereby suppressing the decomposition of an electrolyte solution to improve the capacity and the life characteristics of a battery.

Abstract: A fingerprint recognition device is provided. The fingerprint recognition device includes an image acquisition module acquiring a fingerprint image including an input fingerprint, a preprocessing module generating a preprocessed image by preprocessing the fingerprint image, a minutiae extraction module extracting coordinates of each of minutiae and orientation points of the input fingerprint from the preprocessed image and a fake detection module receiving regions-of-interest (ROIs), including the coordinates of each of the minutiae or orientation points of the input fingerprint, and determining whether the input fingerprint is a fake by performing learning using the received ROIs.