Abstract: The present disclosure relates to an optical unit including a tubular member, which accommodates a plurality of optical fibers and whose shape is variable to achieve an optimal space factor, to minimizes optical loss or the deterioration of optical properties when the optical cable is bent or compressed or external impact is applied, secure waterproof performance, and minimize an outer diameter, and an optical cable including the same.

Abstract: A binder, an electrode and a lithium secondary battery comprising the same are described, wherein the binder includes a first block including a polymer containing functional groups substitutable with lithium ions and a second block. The second block may include a polymer containing oxygen atoms in the main chain. With such a binder, it is possible to prevent the agglomeration of the slurry for preparing the electrode, thereby preventing the occurrence of cracks on the surface of the electrode and improving the life characteristics of the lithium secondary battery.

Abstract: Disclosed is a positive electrode for a lithium-sulfur battery, including a current collector; and a positive electrode active material layer on the current collector, wherein the positive electrode active material layer includes a positive electrode active material and a binder, and the positive electrode active material layer has surface properties defined by the following Sa (arithmetic mean surface roughness of the positive electrode) and Sz (maximum height roughness of the positive electrode) ((i) 1 ?m?Sa?5 ?m, (ii) 10 ?m?Sz?60 ?m (wherein Sa is the average value of the distance from the middle surface of the surface irregularity structure of the positive electrode to the highest point and the lowest point of each irregularity part, and Sz means the distance from the lowest point to the highest point of the positive electrode)) and a method for manufacturing the same.

Abstract: A cart treatment system according to the present invention includes: a pre-treatment module for cart treatment; an intermediate module provided to receive and treat the cart which is treated in the pre-treatment module; and a post-treatment module provided to receive and treat the cart which is treated in the intermediate module, wherein the intermediate module is provided to be put in either a coupled state in which the pre-treatment module is coupled to the post-treatment module or a detached state in which the pre-treatment module is detached from the post-treatment module.

Abstract: The present disclosure relates to an optical unit including a tubular member, which accommodates a plurality of optical fibers and whose shape is variable to achieve an optimal space factor, to minimizes optical loss or the deterioration of optical properties when the optical cable is bent or compressed or external impact is applied, secure waterproof performance, and minimize an outer diameter, and an optical cable including the same.

Abstract: Disclosed is a modified iron oxyhydroxynitrate including iron oxyhydroxynitrate and hydrogen phosphate ions adsorbed on a surface thereof. Also disclosed is a method for preparing the same, a positive electrode for a lithium secondary battery including the modified iron oxyhydroxynitrate as a positive electrode additive, and a lithium secondary battery including the same.

Abstract: A packing according to the present invention includes: an expansion part inserted into a groove formed in an annular shape on an outer side surface of an installation target and including an expansion space, into which air flows, provided therein; and a sealing part connected to a side surface which faces an outer side of the groove among the side surfaces of the expansion part, and provided to press a pressed target by being pushed to an outside of the groove as the expansion part expands to maintain airtightness of a boundary between the installation target and the pressed target adjacent to the installation target.

Abstract: The present disclosure provides a cart treatment module including a treatment body; a fixing means; and a rotation means.

Abstract: The present disclosure relates to an optical fiber ribbon that provides a high-capacity communication network, is capable of being rolled in a width direction so as to efficiently use a space in a conduit, minimizes separation between ribbons constituting the optical fiber ribbon or damage to optical fibers during a rolling process, and facilitates overall connection or branching at a connection end.

Abstract: A binder, an electrode and a lithium secondary battery comprising the same are described, wherein the binder includes a first block including a polymer containing functional groups substitutable with lithium ions and a second block. The second block may include a polymer containing oxygen atoms in the main chain. With such a binder, it is possible to prevent the agglomeration of the slurry for preparing the electrode, thereby preventing the occurrence of cracks on the surface of the electrode and improving the life characteristics of the lithium secondary battery.

Abstract: A binder, an electrode and a lithium secondary battery comprising the same, wherein the binder includes a first block including a polymer containing functional groups substitutable with lithium ions and a second block. The second block may include a polymer containing oxygen atoms in the main chain. With such a binder, it is possible to prevent the agglomeration of the slurry for preparing the electrode, thereby preventing the occurrence of cracks on the surface of the electrode and improving the life characteristics of the lithium secondary battery.

Abstract: The present disclosure relates to a carbon nanotube dispersion including carbon nanotubes, a first dispersant having an amide group, a second dispersant having at least one functional group selected from the group consisting of hydroxyl and carboxyl groups, and sulfur. The present disclosure also relates to a method of preparing the dispersion, an electrode slurry composition including the dispersion, an electrode including the electrode slurry composition, and a secondary battery including the electrode.

Abstract: A binder for preparing a positive electrode of a lithium secondary battery, and a method for preparing a positive electrode using the same. The binder includes two or more different lithium-substituted polyacrylic acids with different molecular weights. The lithium-substituted polyacrylic acids include two different lithium-substituted polyacrylic acids differing in weight average molecular weight by 500,000 or more from each other.

Abstract: The present disclosure relates to an optical unit including a tubular member, which accommodates a plurality of optical fibers and whose shape is variable to achieve an optimal space factor, to minimizes optical loss or the deterioration of optical properties when the optical cable is bent or compressed or external impact is applied, secure waterproof performance, and minimize an outer diameter, and an optical cable including the same.

Abstract: A lithium secondary battery, and more particularly, to a lithium secondary battery having improved performance by minimizing the content of impurities such as sodium in the battery.

Abstract: A slurry composition, and a positive electrode and a lithium secondary battery including the same are provided. The slurry composition includes a positive electrode active material, an electrically conductive material, a binder, a thickener comprising a lithiated carboxymethyl cellulose, an additive comprising a carbodiimide-based compound, and a solvent, and provides an improved processability in a slurry coating process for manufacturing a positive electrode for a lithium secondary battery due to its thixotropy by which sufficient flowability to flexibly respond to changes in slurry coating rate is secured.

Abstract: A slurry composition, and a positive electrode and a lithium secondary battery including the same are provided. The slurry composition includes a positive electrode active material, an electrically conductive material, a binder, a thickener comprising a lithiated carboxymethyl cellulose, an additive comprising a succinimide-based compound, and a solvent, and provides an improved processability in a slurry coating process for manufacturing a positive electrode for a lithium secondary battery, due to its thixotropy by which sufficient flowability to flexibly respond to changes in slurry coating rate is secured.

Abstract: The present disclosure relates to a positive electrode additive for a lithium secondary battery, and a positive electrode active material, a positive electrode and a lithium secondary battery including the same, and in particular, the positive electrode additive represented by Formula 1 is formed on a surface of a carbon material included in the positive electrode active material and is not dissolved in an electrolyte solution, which functions to electrically separate the positive electrode and a negative electrode, and accordingly, battery performance is enhanced by suppressing side reactions in the battery.

Abstract: Disclosed is a carbon-based fiber sheet and a lithium-sulfur battery including the same. The carbon-based fiber sheet for the lithium-sulfur battery is doped with a high concentration of nitrogen and thus plays a role of preventing diffusion by adsorbing lithium polysulfide eluted from a positive electrode during charging and discharging, thereby suppressing a shuttle reaction and thus improving capacity and lifecycle properties of the lithium-sulfur battery.

Abstract: The present disclosure provides a method for determining the remaining capacity of a lithium-sulfur battery using a voltage drop value obtained by applying a constant current in an open-circuit state and a battery pack implementing the method.