Abstract: A negative electrode for a lithium secondary battery, a method of manufacturing the same, and a lithium secondary battery including the same are provided. The negative electrode comprises a plurality of lithium thin films and a salt coating layer, which contains a lithium salt and an additive, formed between the plurality of lithium thin films, and provides improved lifetime characteristics of a battery while maintaining high coulombic efficiency because the lithium salt and the additive being consumed in the electrolyte during operation of the battery are replenished as the salt coating layer dissolves.

Abstract: The present disclosure relates to an electrolyte for a lithium-sulfur battery and a lithium-sulfur battery comprising the same, and more specifically, the electrolyte comprises a first solvent comprising a benzene-based compound and a second solvent comprising 1,3-dioxolane as a non-aqueous organic solvent, thereby suppressing the leaching of lithium polysulfide and thus enabling high capacity and long cycle life of the lithium-sulfur battery.

Abstract: A positive electrode for a lithium-sulfur battery and a lithium-sulfur battery including the same, and in particular, a positive electrode for a lithium-sulfur battery including an active material, a conductive material, a binder and an additive, wherein the additive includes an organic acid lithium salt, the organic acid lithium salt including a dicarboxyl group. By including a dicarboxyl group-including organic acid lithium salt as the additive, the positive electrode for the lithium-sulfur battery is capable of enhancing capacity and lifetime properties of the lithium-sulfur battery through enhancing lithium ion migration properties.

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: A positive electrode slurry composition, a positive electrode manufactured using the same, and a battery including the positive electrode. The positive electrode slurry composition includes a positive electrode active material, a binder, an alcohol, and water, wherein a content of the alcohol is in a range of 0.1 to 10% by weight, based on a total weight of the composition. The slurry composition for manufacturing a positive electrode has effects of highly improving the dispersibility of the positive electrode active material and the conductive material, decreasing the surface roughness of an electrode, and remarkably reducing a curling phenomenon in the electrode. Also, the slurry composition has an economic advantage in that a dispersing agent is not used or an amount of the dispersing agent used can be remarkably reduced.

Abstract: Provided is a positive electrode for a lithium-sulfur secondary battery comprising a positive electrode active material, an electrically conductive material, a binder, and a multivalent metal salt. The multivalent metal salt comprises a cation of a metal selected from a group consisting of metals having 3 to 6 of an effective nuclear charge of outermost electrons in the 3rd and 4th periods. The positive electrode for the lithium-sulfur secondary battery can improve the performance of the lithium-sulfur secondary battery by introducing a multivalent metal salt and thus effectively inhibiting the leaching of lithium polysulfide when applied to the battery while not significantly increasing the weight of the electrode and not significantly lowering the conductivity of the electrode.

Abstract: The present disclosure relates to a method for manufacturing a positive electrode for a lithium-sulfur battery including: (1) mixing a sulfur-carbon composite and a binder to prepare a slurry for a positive electrode active material; (2) applying the slurry for the positive electrode active material to one surface of the current collector; (3) a first drying step of drying the current collector, to which the slurry is applied, using hot air and medium wave infrared radiation; and (4) a second drying step of drying the current collector, to which the slurry is applied, using a laser heat source after the first drying step (3).

Abstract: The present disclosure relates to an electrolyte for a lithium secondary battery, and in particular, to a liquid electrolyte capable of stabilizing lithium metal and suppressing lithium dendrite growth, and a lithium secondary battery including the same. The lithium secondary battery provided with the electrolyte according to the present disclosure has an excellent cycle-dependent capacity retention rate, and accordingly, is effective in improving a battery lifespan property.

Abstract: A cathode for lithium secondary batteries including a gel polymer electrolyte coating layer formed on a cathode active material layer of a lithium secondary battery, and more particularly, a cathode having a novel structure capable of solving problems caused due to lithium polysulfides, the problems being caused in conventional lithium secondary batteries, and a lithium secondary battery including the same and method for preparing the same.

Abstract: An electrode including an additive for forming pores with an average particle diameter of 1 ?m or greater, and a lithium secondary battery including the electrode. The porosity of the porous particles may be from 50% to 95%. The porosity of the electrode increases by including the additive for forming pores. As the porosity of the electrode increases by the additive for forming pores, and accordingly, effects of having excellent electrode reactivity and enhanced initial capacity are obtained even under high loading.

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 positive electrode active material for a lithium secondary battery, which can improve the performance of the battery by mixing various carbons with positive electrode active material and applying it, and a preparation method thereof and a lithium secondary battery including the same. The positive electrode active material for the lithium secondary battery includes two or more types of active material composites in which sulfur is supported on the carbon materials contained therein, wherein the carbon materials contained in any one of the two or more types of active material composites differ in at least one of the average particle size and shape from the carbon materials contained in another type of active material composites.

Abstract: A separator capable of simultaneously solving the problems caused by lithium polysulfide and lithium dendrite generated in a conventional lithium-sulfur battery wherein the separator includes a porous substrate coated with graphene oxide and boron nitride on at least one side, and a lithium-sulfur battery including the same.

Abstract: An electrolyte solution for a lithium-sulfur battery including: a lithium salt, which includes an anion having a donor number of 15 kcal/mol of more, and a non-aqueous solvent, and a lithium-sulfur battery including the same.

Abstract: A separator capable of simultaneously solving the problems caused by lithium polysulfides and lithium dendrites generated in a conventional lithium-sulfur battery wherein the separator includes a porous substrate alternately laminated with a graphene oxide layer and a boron nitride layer on at least one side thereof, and to a lithium-sulfur battery including the same.

Abstract: A positive electrode slurry composition, a positive electrode manufactured using the same, and a battery including the positive electrode. The positive electrode slurry composition includes a positive electrode active material, a binder, an alcohol, and water, wherein a content of the alcohol is in a range of 0.1 to 10% by weight, based on a total weight of the composition. The slurry composition for manufacturing a positive electrode has effects of highly improving the dispersibility of the positive electrode active material and the conductive material, decreasing the surface roughness of an electrode, and remarkably reducing a curling phenomenon in the electrode. Also, the slurry composition has an economic advantage in that a dispersing agent is not used or an amount of the dispersing agent used can be remarkably reduced.

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: A cathode for lithium secondary batteries including a gel polymer electrolyte coating layer formed on a cathode active material layer of a lithium secondary battery, and more particularly, a cathode having a novel structure capable of solving problems caused due to lithium polysulfides, the problems being caused in conventional lithium secondary batteries, and a lithium secondary battery including the same and method for preparing the same.

Abstract: A separator capable of simultaneously solving the problems caused by lithium polysulfides and lithium dendrites generated in a conventional lithium-sulfur battery wherein the separator includes a porous substrate alternately laminated with a graphene oxide layer and a boron nitride layer on at least one side thereof, and to a lithium-sulfur battery including the same.

Abstract: A separator capable of simultaneously solving the problems caused by lithium polysulfide and lithium dendrite generated in a conventional lithium-sulfur battery wherein the separator includes a porous substrate coated with graphene oxide and boron nitride on at least one side, and a lithium-sulfur battery including the same.