Negative electrode for non-aqueous secondary battery, and process for production thereof

A negative electrode for a non-aqueous secondary battery, which comprises a negative electrode current collector and a negative electrode mix layer comprising a negative electrode mix composed of at least a silicon (Si)-containing negative electrode active material and a binder and formed on the surface of the negative electrode current collector, wherein the binder comprises a polyimide-silica hybrid resin that is produced by the sol-gel curing and dehydrating/ring-closing of a silane-modified polyamic acid represented by formula (wherein R1 represents an aromatic tetracarboxylic acid dianhydride residue containing 90 mol% or more of a 3,3',4,4'-biphenyltetracarboxylic acid dianhydride residue; R2 represents an aromatic diamine residue containing 90 mol% or more of a 4,4'-diaminodiphenylether residue; R3 represents an alkyl group having 1 to 8 carbon atoms; R4's independently represent an alkyl or alkoxyl group having 1 to 8 carbon atoms; q represents 1 to 5000; r represents 1 to 1000; and m represents 1 to