Patent ID: 8865350

Claim:
A nonaqueous electrolyte battery comprising: a positive electrode; a negative electrode having a negative electrode active material layer containing a negative electrode active material, wherein the negative electrode active material comprises a carbon material; a separator disposed between the positive electrode and the negative electrode; and a non-fluid electrolyte, wherein the non-fluid electrolyte contains an electrolyte salt, a nonaqueous solvent, an orthoester compound represented by the following formula (1), and at least one member selected from the group consisting of cyclic carbonate compounds represented by the following formula (2) to (5), a volume density of the negative electrode active material layer is 1.50 g/cc or more and not more than 1.75 g/cc, and a BET specific surface area of the carbon material is 0.8 m 2 /g or more and not more than 4.0 m 2 /g wherein R1 represents a hydrogen atom, an alkyl group or an aryl group, and preferably a hydrogen atom or an aryl group; and each of R2 to R4 independently represents an alkyl group, a halogenated alkyl group or an aryl group, and preferably an alkyl group having from 1 to 10 carbon atoms or an aryl group, and especially preferably a methyl group, an ethyl group or a propyl group, wherein each of R5 to R8 represents a hydrogen atom, a halogen group, an alkyl group or a halogenated alkyl group, provided that at least one of R5 to R8 represents a halogen group or a halogenated alkyl group, and R5 to R8 may be the same as or different from each other; though the kind of the halogen is not particularly limited, for example, at least one member selected from the group consisting of fluorine, chlorine and bromine is exemplified, and above all, fluorine is preferable; this is because high effects are obtainable; and as a matter of course, the halogen may be other halogen, wherein each of R9 and R10 represents a hydrogen atom or an alkyl group, wherein each of R11 to R14 represents a hydrogen atom, an alkyl group, a vinyl group or an allyl group, provided that at least one of R11 to R14 represents a vinyl group or an allyl group, and wherein R15 represents an alkylene group.