A non-aqueous electrolyte solution contains a sulfonylimide compound represented by the general formula (1): LiN(RSO)(RSO) (wherein R and R are identical or different from each other and each represents a fluorine atom, an alkyl group having 1 to 6 carbon ...

An electrolytic solution for lithium ion secondary batteries contains: a lithium salt electrolyte; an organic solvent; and an aliphatic compound having three or more carboxylic acid groups in a molecule. A lithium ion secondary battery includes: a cathode ...

A negative electrode active material for an electric device includes an alloy containing silicon in a range from 33% by mass to 50% by mass, zinc in a range of greater than 0% by mass and less than or equal to 46% by mass exclusive, vanadium in a range fro...

Provided are a positive electrode active material (31a), a lithium ion electric storage device (30) using the same, and a manufacturing method thereof. The positive electrode active material (31a) contains (1) lithium nickel cobalt manganese oxide, and at ...