Abstract: Disclosed herein are a manufacturing method of a carbon-silicon composite, the manufacturing method including: (a) preparing a silicon-carbon-polymer matrix slurry including a silicon slurry, carbon particles, a monomer of polymer, and a cross-linking agent; (b) performing a heat treatment process on the silicon-carbon-polymer matrix slurry to manufacture a silicon-carbon-polymer carbonized matrix; (c) pulverizing the silicon-carbon-polymer carbonized matrix to manufacture a silicon-carbon-polymer carbonized matrix structure; and (d) mixing the silicon-carbon-polymer carbonized matrix structure with a first carbon raw material and performing a carbonization process to manufacture a carbon-silicon composite, the carbon-silicon composite, an anode for a secondary battery manufactured by applying the carbon-silicon composite, and a secondary battery including the anode for a secondary battery.

Abstract: The present disclosure relates to a sulfur-carbon composite and a preparing method thereof, and more particularly, to a sulfur-carbon composite having an aggregated structure by performing a pressure heat treatment on a mixture of a carbonaceous conductive material and a sulfur-containing amorphous carbon material and carbonizing the same, and a preparing method thereof.

Abstract: Disclosed herein are a manufacturing method of a carbon-silicon composite, including: (a) preparing a slurry solution including silicon (Si)-block copolymer core-shell particles; (b) mixing the slurry solution with a carbon raw material to manufacture a mixed solution; (c) performing a primary carbonization process on the mixed solution, followed by pulverization, to manufacture a primary carbon-silicon composite; and (d) performing a secondary carbonization process on the primary carbon-silicon composite, followed by pulverization, to manufacture a secondary carbon-silicon composite, the carbon-silicon composite, an anode for a secondary battery manufactured by applying the carbon-silicon composite, and a secondary battery including the anode for a secondary battery.

Abstract: The present disclosure relates to a sulfur-carbon composite and a preparing method thereof, and more particularly, to a sulfur-carbon composite having an aggregated structure by performing a pressure heat treatment on a mixture of a carbonaceous conductive material and a sulfur-containing amorphous carbon material and carbonizing the same, and a preparing method thereof. According to the present disclosure, the sulfur and the amorphous carbon material are present in the sulfur-carbon composite including the sulfur-containing amorphous carbon material and the carbonaceous conductive material by being aggregated through the pressure heat treatment and the carbonization process. As a carbon component in a carbon matrix of the amorphous carbon material and the sulfur are chemically bonded to each other, the sulfur may be prevented from leaking from the composite.

Abstract: Silicon slurry for anode active materials of secondary batteries is provided. The silicon slurry includes silicon particles and a dispersion medium. The silicon slurry satisfies dispersion conditions of 1?D90/D50?2.5 and 2 nm<D50<180 nm, where D90 denotes an average diameter of the silicon particles at 90% of cumulative particle size distribution, and D50 denotes an average diameter of the silicon particles at 50% of cumulative particle size distribution.

Abstract: The present invention relates to a carbon-silicon composite and an anode active material for a secondary battery comprising the same, and more particularly, a carbon-silicon composite in which silicon (Si)-block copolymer core-shell particles are uniformly dispersed and embedded in a carbonaceous substance.

Abstract: The present invention relates to a negative electrode for a secondary battery and a method for manufacturing the negative electrode, and more particularly, to a negative electrode for a secondary battery which exhibits excellent charge/discharge characteristics and lifespan characteristics by including a carbon-silicon composite and graphite at a predetermined particle size ratio.

Abstract: The present disclosure relates to a composition for preparing a silicon-carbon composite having nano-Si particulates and electrically conductive materials dispersed in an amorphous carbon, the silicon-carbon composite prepared therefrom, an electrode for secondary battery comprising the silicon-carbon composite, and a method for producing the silicon-carbon composite.

Abstract: The Si-block copolymer core-shell nanoparticles include: a Si core; and a block copolymer shell including a block having relatively relatively high affinity for Si and a block having relatively low affinity for Si and forming a spherical micelle structure around the Si core. Since the Si-block copolymer core-shell nanoparticles exhibit excellent dispersibility and stability in a mixed solution including the same, the Si-block copolymer core-shell nanoparticles are easily applied to an anode active material for lithium secondary battery by carbonization thereof.

Abstract: Disclosed herein is a device for producing a polymer dispersion solution of core-shell structured silicon nanoparticles. The device includes: a canister for storing silicon nanoparticles; a quantitative feeder for receiving the silicon nanoparticles released from the canister and for quantitatively feeding the same; a mixing tank for mixing block copolymer constituting a shell, and a dispersion solvent, and the silicon nanoparticles fed through the quantitative feeder to form core-shell structured silicon nanoparticles; an ultrasonic disperser for receiving the core-shell structured silicon nanoparticles released from the mixing tank and a dispersion solvent and for dispersing the particles with ultrasonic waves; and a dispersion solvent tank for feeding a dispersion solvent into the mixing tank and the ultrasonic disperser.

Abstract: Disclosed herein are a manufacturing method of a carbon-silicon composite, the manufacturing method including: (a) preparing a silicon-carbon-polymer matrix slurry including a silicon slurry, carbon particles, a monomer of polymer, and a cross-linking agent; (b) performing a heat treatment process on the silicon-carbon-polymer matrix slurry to manufacture a silicon-carbon-polymer carbonized matrix; (c) pulverizing the silicon-carbon-polymer carbonized matrix to manufacture a silicon-carbon-polymer carbonized matrix structure; and (d) mixing the silicon-carbon-polymer carbonized matrix structure with a first carbon raw material and performing a carbonization process to manufacture a carbon-silicon composite, the carbon-silicon composite, an anode for a secondary battery manufactured by applying the carbon-silicon composite, and a secondary battery including the anode for a secondary battery.

Abstract: Disclosed herein are a manufacturing method of a carbon-silicon composite, including: (a) preparing a slurry solution including silicon (Si)-block copolymer core-shell particles; (b) mixing the slurry solution with a carbon raw material to manufacture a mixed solution; (c) performing a primary carbonization process on the mixed solution, followed by pulverization, to manufacture a primary carbon-silicon composite; and (d) performing a secondary carbonization process on the primary carbon-silicon composite, followed by pulverization, to manufacture a secondary carbon-silicon composite, the carbon-silicon composite, an anode for a secondary battery manufactured by applying the carbon-silicon composite, and a secondary battery including the anode for a secondary battery.

Abstract: The present invention relates to an anode active material for a lithium secondary battery, which comprises a core layer comprising a carbon-silicon composite, and a shell layer comprising a conductive material and a carbonaceous material for fixing the conductive material, uniformly coated on a surface of the core layer; and the preparation method thereof.

Abstract: Disclosed herein are a manufacturing method of a carbon-silicon composite, comprising: (a) preparing a silicon-polymer matrix slurry comprising a silicon slurry, a monomer, and a cross-linking agent; (b) performing a heat treatment on the silicon-polymer matrix slurry to manufacture a silicon-polymer carbonized matrix; (c) pulverizing the silicon-polymer carbonized matrix to manufacture silicon-polymer carbonized particles; and (d) mixing the silicon-polymer carbonized particles with a first carbon raw material, and then performing a carbonization process, the carbon-silicon composite, an anode for a secondary battery manufactured by applying the carbon-silicon composite, and a secondary battery comprising the anode for a secondary battery.

Abstract: The present disclosure provides a carbon-silicon composite including: a first carbon matrix; and carbonized Si-block copolymer core-shell particles dispersed uniformly in the first carbon matrix. The present disclosure also provides a lithium secondary battery anode and a lithium secondary battery, which include the carbon-silicon composite.

Abstract: Silicon slurry for anode active materials of secondary batteries is provided. The silicon slurry includes silicon particles and a dispersion medium. The silicon slurry satisfies dispersion conditions of 1?D90/D50?2.5 and 2 nm<D50<180 nm, where D90 denotes an average diameter of the silicon particles at 90% of cumulative particle size distribution, and D50 denotes an average diameter of the silicon particles at 50% of cumulative particle size distribution.

Abstract: The Si-block copolymer core-shell nanoparticles include: a Si core; and a block copolymer shell including a block having relatively relatively high affinity for Si and a block having relatively low affinity for Si and forming a spherical micelle structure around the Si core. Since the Si-block copolymer core-shell nanoparticles exhibit excellent dispersibility and stability in a mixed solution including the same, the Si-block copolymer core-shell nanoparticles are easily applied to an anode active material for lithium secondary battery by carbonization thereof.