Negative electrode active material, negative electrode, and secondary battery

A negative electrode active material for a battery, comprising:

• a negative electrode active material core material;
• and
• a film provided on a surface of the negative electrode active material core material, wherein
• the film includes an organic-inorganic hybrid film having a reactant at least including:
• a first metal alkoxide including no metal atom-carbon atom bond in a molecule;
• and
• a second metal alkoxide including two or more of metal atom-carbon atom bonds in a molecule;
• the second metal alkoxide is a compound represented by a following general formula (2A), (2B), (2C), (2E) or (2F), or a mixture thereof:
• (R211O), 3Si—R31—Si(OR212)3 (2A)
• wherein R211 and R212 each independently represent an alkyl group having 1 to 10 carbon atoms:
• R31 represents a divalent hydrocarbon group having 1 to 20 carbon atoms;
• wherein R211, R212, R213, and R214 each independently represent an alkyl group havig 1 to 10 carbon atoms;
• R32 represents a divalent hydrocarbon group having 1 to 20 carbon atoms;
• R33 represents a monovalent hydrocarbon group having 1 to 10 carbon atoms;
• (R211)3Si—R34—NH—R35—NH—R36—Si(OR212)3 (2C)
• wherein R211 and R212 each independently represent an alkyl group having 1 to 10 carbon atoms;
• R34, R35, and R36 each independently represent a divalent hydrocarbon group having 1 to 10 carbon atoms;
• wherein R212 and R213 each independently represent an alkyl group having 1 to 10 carbon atoms;
• R32 represents a divalent hydrocarbon group having 1 to 20 carbon atoms;
• R33 represents a monovalent hydrocarbon group having 1 to 10 carbon atoms:
• and R34 represents a monovalent hydrocarbon group having 1 to 30 carbon atoms;
• wherein R212, R213, and R214 each independently represent an alkyl group having 1 to 10 carbon atoms;
• and
• wherein R32 represents a divalent hydrocarbon group having 1 to 20 carbon atoms.