Tera Technos Co., Ltd

Posco Silicon Solution Co., Ltd

Sun Ho Choi

Jae Woo Lee

Jin Gee Park

Jung Hoon Cheon

Sung Soo Kim

Sichen Du

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.

Device and method of preparing siox, and siox anode material

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 CuKα ray, a ratio (A/A) of an area (A) of a first peak present in a region where a diffraction angleθ is 10° to 27.4° to an area (A) of a second peak present in a region where the diffraction angleθ is 28±0.5° is 0.8 to 6.

Negative electrode material for secondary battery

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.

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Sejong-si, South Korea

Sun Ho Choi