Silicon nanoparticle-containing hydrogen polysilsesquioxane, calcined product thereof, production method therefor, active material, negative electrode, and lithium ion battery

A production method for a silicon nanoparticle-containing hydrogen polysilsesquioxane calcined product, represented by general formula SiOx2Hy2 (0.3<x2<1.5, 0.01<y2<0.35), containing 5% by weight to 65% by weight of silicon nanoparticles having a volume-basis mean particle size of more than 10 nanometers and less than 500 nanometers, having a chemical bond between a surface of the silicon nanoparticles and a silicon oxide structure derived from hydrogen polysilsesquioxane, having a Si—H bond, and substantially containing no carbon, and including a step of calcining silicon nanoparticle-containing hydrogen polysilsesquioxane, represented by general formula SiOx1Hy1 (0.25<x1<1.35, 0.16<y1<0.90), containing 5% by weight to 65% by weight of silicon nanoparticles having a volume-basis mean particle size of more than 10 nanometers and less than 500 nanometers, and having a chemical bond between a surface of the silicon nanoparticles and hydrogen polysilsesquioxane.

A silicon nanoparticle-containing hydrogen polysilsesquioxane, represented by general formula SiOx1Hy1 (0.25<x1<1.35, 0.16<y1<0.90), containing 5% by weight to 65% by weight of silicon nanoparticles having a volume-basis mean particle size of more than 10 nanometers and less than 500 nanometers, and having a chemical bond between a surface of the silicon nanoparticles and hydrogen polysilsesquioxane.

A production method for silicon nanoparticle-containing hydrogen polysilsesquioxane, represented by general formula SiOx1Hy1 (0.25<x1<1.35, 0.16<y1<0.90), containing 5% by weight to 65% by weight of silicon nanoparticles having a volume-basis mean particle size of more than 10 nanometers and less than 500 nanometers, and having a chemical bond between a surface of the silicon nanoparticles and hydrogen polysilsesquioxane, and including a step of allowing hydrolysis and a condensation reaction of a silicon compound represented by formula (1) in the presence of silicon nanoparticles:

• HSi(R)3 (1)
• wherein, R is halogen, hydrogen or a group selected from substituted or unsubstituted alkoxy having 1 to 10 carbons, substituted or unsubstituted aryloxy having 6 to 20 carbons, and substituted or unsubstituted arylalkoxy having 7 to 30 carbons, which is identical with or different from each other, in which, in the substituted or unsubstituted alkoxy having 1 to 10 carbons, the substituted or unsubstituted aryloxy having 6 to 20 carbons, and the substituted or unsubstituted arylalkoxy having 7 to 30 carbons, arbitrary hydrogen may be replaced by halogen.