Abstract: A negative electrode material for a secondary battery including: a matrix including silicon (Si), one or more doping elements (D) selected from the group consisting of alkali metals, alkaline earth metals, and post transition metals, and oxygen (O), based on an element component; and silicon nanoparticles dispersed and embedded in the matrix, wherein the negative electrode material has composition uniformity, and a ratio (A1/A2) between an area of a first peak (A1) and an area of a second peak (A2) satisfying 0.8 to 6, a diffraction angle 2? being positioned in a range of 10° to 27.4° in the first peak and being positioned in a range of 28±0.5° in the second peak, in an X-ray diffraction pattern using a CuK? ray.

Abstract: Provided is a negative electrode material for a secondary battery, which is in a particle form including: a matrix including a silicon oxide, a composite oxide of silicon and one or more doping elements selected from the group consisting of alkali metals, alkaline earth metals, and post transition metals, or a mixture thereof; and silicon nanoparticles dispersed and embedded in the matrix, wherein a compressive strength (St) of the particles is 100 MPa or more, and a ratio (A1/A2) between an area of a first peak (A1) and an area of a second peak (A2) satisfies 0.8 to 6, a diffraction angle 2? being positioned in a range of 10° to 27.4° in the first peak and being positioned in a range of 28±0.5° in the second peak, in an X-ray diffraction pattern using a CuK? ray.

Abstract: A negative electrode material for a secondary battery includes a matrix containing silicon oxide, a composite oxide of one or more doping elements selected from the group consisting of an alkali metal, an alkaline earth metal, and a post-transition metal, and silicon, or a mixture thereof; and silicon nanoparticles dispersed and embedded in the matrix; wherein a hardness and a Young's modulus measured by a nanoindentation test are 4.0 GPa or more and 40 GPa or more, respectively, and in an X-ray diffraction pattern using a CuK? ray, a ratio (A1/A2) of an area (A1) of a first peak present in a region where a diffraction angle 2? is 10° to 27.4° to an area (A2) of a second peak present in a region where the diffraction angle 2? is 28±0.5° is 0.8 to 6.

Abstract: A negative electrode material for a secondary battery includes a matrix containing silicon oxide, a composite oxide of one or more doping elements selected from an alkali metal, an alkaline earth metal, and a post-transition metal, and silicon, or a mixture thereof; and silicon nanoparticles dispersed and embedded in the matrix.

Abstract: The present invention relates to a silicon oxide preparation method and a preparation device thereof, and more particularly, to a silicon oxide preparation method capable of continuously preparing silicon oxide by a liquid phase-solid phase reaction by introducing a silicon-based molded body into silicon molten metal, and a preparation device thereof.

Abstract: Provided is a negative electrode material for a secondary battery. The negative electrode material for a secondary battery contains: a matrix containing a silicon oxide, a complex oxide of one or more doping elements selected from the group consisting of an alkali metal, an alkaline earth metal and a post-transition metal, and silicon, or a mixture thereof; and silicon nanoparticles dispersed and impregnated in the matrix, wherein the negative electrode material for a secondary battery satisfies the following Equation: 1<WN(Si)/WN(ref), wherein WN(ref) is a central wavenumber of a Raman peak of bulk single-crystal silicon, and WN(Si) is a central wavenumber of a Raman peak of nanoparticulate silicon contained in the negative electrode material.

Abstract: The present invention relates to a device and a method of preparing a SiOx, and a SiOx anode material, and more particularly, to a device and a method of preparing a SiOx, in which a SiOx is prepared by reacting liquid silicon and solid silicon dioxide in one or more crucibles, and a metal raw material is simultaneously supplied during SiOx preparing to continuously prepare a metal-SiOx in a single process, and a SiOx anode material.

Abstract: The present invention relates to a device and a method of preparing a SiOx, and a SiOx anode material, and more particularly, to a device and a method of preparing a SiOx, in which a SiOx is prepared by reacting liquid silicon and solid silicon dioxide in one or more crucibles, and a metal raw material is simultaneously supplied during SiOx preparing to continuously prepare a metal-SiOx in a single process, and a SiOx anode material.