Abstract: The present disclosure relates to a positive electrode including a positive electrode active material, a positive electrode conductive material, and a positive electrode binder, the positive electrode active material includes a lithium nickel-based oxide containing 70 mol % or less of nickel among all metals excluding lithium, wherein the lithium nickel-based oxide includes single particle-type particles, and the conductive material includes a linear conductive material and a dotted conductive material, and FCR defined by Equation (1) below satisfies 12 to 20: F C ? R = d c ? 1 × d c ? 2 × D 50. a [ Equation ? 1 ] wherein, dc1 is the true density (unit: g/cm3) of the linear conductive material above, dc2 is the true density (unit: g/cm3) of the dotted conductive material above, and D50.a is the average particle diameter of the positive electrode active material (unit: ?m).

Abstract: The present disclosure relates to a positive electrode including a positive electrode active material, a positive electrode conductive material, and a positive electrode binder, wherein the positive electrode active material includes a lithium nickel-based oxide containing 70 mol % or less of nickel among all metals excluding lithium, wherein the lithium nickel-based oxide includes single particle-type particles, and the conductive material includes a linear conductive material and a dotted conductive material, and FCR defined by Equation (1) below satisfies 12 to 20: FCR=dc1×dc2×D50.a??[Equation (1)] wherein, dc1 is the true density (unit: g/cm3) of the linear conductive material above, dc2 is the true density (unit: g/cm3) of the dotted conductive material above, and D50.a is the average particle diameter of the positive electrode active material (unit: ?m).

Abstract: The present disclosure relates to a polyimide-based polymer film comprising a polyimide-based polymer containing a polyimide repeating unit synthesized by the reaction of an acid anhydride compound having a specific structure and a diamine compound, wherein a glass transition temperature is 400° C. or more, and a thickness direction retardation value at a thickness of 10 ?m is 150 nm or less, and a substrate for a display device and an optical device using the same.

Abstract: Disclosed herein a method of manufacturing a carbon fiber-reinforced composite including a thermal barrier coating layer, the method includes: preparing a thermal barrier coating layer; preparing a substrate including a carbon fiber fabric; and attaching the thermal barrier coating layer on an upper portion of the substrate and molding a composite with a resin transfer molding.

Abstract: Provided is a lithium secondary battery including a negative electrode including a negative electrode composite layer including a negative electrode active material including a first negative electrode active material and a second negative electrode active material, a negative electrode conductive material, and a negative electrode binder; a positive electrode including a positive electrode composite layer including a positive electrode active material, a positive electrode conductive material, and a positive electrode binder; and an electrolyte, and CFC defined by Equation 1 is 0.38 to 1.962: CFC=100×Wc?{(D50,a1×D50,a2×L×RN/P×1010)/MWc}??Equation 1: wherein in Equation 1, all the variables are described herein.

Abstract: The present disclosure relates to a lithium secondary battery with improved safety during thermal runaway. The lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolyte, and has a nominal voltage of 3.68 V or greater, and VP represented by Equation (1) below is 4 mbar·Ah?1·sec?1 or less: Equation (1): VP=?P/(tmax×C).

Abstract: The present disclosure relates to a lithium secondary battery with improved safety during thermal runaway. The lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolyte, and has a nominal voltage of 3.68 V or greater, and VT represented by Equation (1) below measured after manufacturing a test module by stacking four of the lithium secondary battery fully charged by being charged to 4.35 V is 4 Ah/sec or less: Equation (1): VT=Ctotal/t.

Abstract: The present disclosure relates to a lithium secondary battery with improved safety during thermal runaway. The lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolyte, and has a nominal voltage of 3.68 V or greater, and VP represented by Equation (1) below is 4 mbar·Ah?1·sec?1 or less: Equation (1): VP=?P/(tmax×C).

Abstract: The present disclosure relates to a lithium secondary battery with improved safety during thermal runaway. The lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolyte, and has a nominal voltage of 3.68 V or greater, and VT represented by Equation (1) below measured after manufacturing a test module by stacking four of the lithium secondary battery fully charged by being charged to 4.35 V is 4 Ah/sec or less: Equation (1): VT=Ctotal/t.

Abstract: The present disclosure relates to a positive electrode including a positive electrode active material, a positive electrode conductive material, and a positive electrode binder, wherein the positive electrode active material includes a lithium nickel-based oxide containing 70 mol % or less of nickel among all metals excluding lithium, wherein the lithium nickel-based oxide includes single particle-type particles, and the conductive material includes a linear conductive material and a dotted conductive material, and FCR defined by Equation (1) below satisfies 12 to 20: FCR=dc1×dc2×D50.a??[Equation (1)] wherein, dc1 is the true density (unit: g/cm3) of the linear conductive material above, dc2 is the true density (unit: g/cm3) of the dotted conductive material above, and D50.

Abstract: A method for treating wastewater of a neopentyl glycol production process, the method including: recovering wastewater including a catalyst from one or more processes of an aldol purification process, a_neopentyl glycol purification process, and an extractant recovery process, and supplying the wastewater to a volatile organic compounds to a separation column; obtaining, from the separation column for volatile organic compound separation column; obtaining an upper discharge stream including the catalyst and a lower discharge stream including wastewater from which the catalyst has been removed in the volatile organic compound separation column; and supplying the lower discharge stream to a wastewater treatment system to treat the wastewater.

Abstract: The present disclosure relates to a lithium secondary battery with improved safety during thermal runaway. The lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolyte, and has a nominal voltage of 3.68 V or greater, and VT represented by Equation (1) below measured after manufacturing a test module by stacking four of the lithium secondary battery fully charged by being charged to 4.35 V is 4 Ah/sec or less: Equation (1): VT=Ctotal/t.

Abstract: The present disclosure relates to a lithium secondary battery with improved safety during thermal runaway. The lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolyte, and has a nominal voltage of 3.68 V or greater, and VP represented by Equation (1) below is 4 mbar·Ah?1·sec?1 or less: Equation (1): VP=?P/(tmax×C).

Abstract: The present disclosure relates to a polyimide-based resin film in which a refractive index difference (?n) obtained by Equation 1 is 0.0068 or less, and a yellow index at a thickness of 10 ?m is 5.5 or less, and a substrate for display device, and an optical device using the same.

Abstract: The present disclosure relates to a polyimide-based resin film comprising a polyimide-based resin containing a polyimide repeating unit represented by Chemical Formula 1 and a polyimide repeating unit represented by Chemical Formula 2, a substrate for display device, and an optical device using the same.

Abstract: Disclosed herein a method of manufacturing a carbon fiber-reinforced composite including a thermal barrier coating layer, the method includes: preparing a thermal barrier coating layer; preparing a substrate including a carbon fiber fabric; and attaching the thermal barrier coating layer on an upper portion of the substrate and molding a composite with a resin transfer molding.

Abstract: The present disclosure relates to a carbon-fiber-reinforced composite including a plurality of stacked thermoplastic layers, and a plurality of carbon fiber reinforcing layers interposed between the thermoplastic layers, wherein the carbon-fiber-reinforced composite further comprises a stitching part stitched with an upper yarn and a lower yarn from outside of the thermoplastic layers at a folding location of the carbon-fiber-reinforced composite.

Abstract: The present disclosure relates to a polyimide-based polymer film comprising a polyimide-based polymer containing a polyimide repeating unit synthesized by the reaction of an acid anhydride compound having a specific structure and a diamine compound, wherein a glass transition temperature is 400° C. or more, and a thickness direction retardation value at a thickness of 10 ?m is 150 nm or less, and a substrate for a display device and an optical device using the same.

Abstract: The present disclosure relates to a polyimide-based polymer film comprising a polyimide-based polymer containing a polyimide repeating unit synthesized by the reaction of an acid anhydride compound having a specific structure and a diamine compound, wherein an average transmittance at a wavelength of 380 nm or more and 780 nm or less is 60% or more, and a thickness direction retardation value at a thickness of 10 pm is 150 nm or less, and a substrate for a display device, a circuit board, an optical device, and an electronic device using the same.

Abstract: The present disclosure relates to a carbon-fiber-reinforced composite including a plurality of stacked thermoplastic layers, and a plurality of carbon fiber reinforcing layers interposed between the thermoplastic layers, wherein the carbon-fiber-reinforced composite further comprises a stitching part stitched with an upper yarn and a lower yarn from outside of the thermoplastic layers at a folding location of the carbon-fiber-reinforced composite