Non-aqueous electrolytic solution and non-aqueous electrolyte secondary battery using the same
A task is to provide a non-aqueous electrolytic solution exhibiting excellent cycle capacity maintaining ratio and excellent low-temperature resistance characteristics and a non-aqueous electrolyte secondary battery using the same. An object of the present invention is to provide a non-aqueous electrolytic solution which improves the cycle capacity maintaining ratio and low-temperature resistance characteristics, and a non-aqueous electrolyte secondary battery using the non-aqueous electrolytic solution. The present invention is a non-aqueous electrolytic solution comprising an electrolyte and a non-aqueous solvent dissolving therein the electrolyte, wherein the non-aqueous electrolytic solution contains a compound represented by formula (1) (wherein X represents an organic group containing a heteroatom, Y represents a sulfur atom, a phosphorus atom, or a carbon atom, n represents an integer of 1 or 2, m represents an integer of 2 to 4, l represents an integer of 1 or 2, and Z represents an organic group having 4 to 12 carbon atoms and optionally having a heteroatom), and a non-aqueous electrolyte secondary battery comprising the non-aqueous electrolytic solution.
1. A compound which is represented by the following formula (20):
wherein:
R a each occurrence independently represents an alkyl group having 1 to 4 carbon atoms,
R b each occurrence independently represents an alkyl group having 1 to 4 carbon atoms, and
p represents an integer of 4 to 6.
2. The compound of claim 1 , wherein R a independently represents a methyl or ethyl.
3. The compound of claim 1 , wherein R b independently represents a methyl or ethyl.
4. The compound of claim 2 , wherein R b independently represents a methyl or ethyl.
5. A non-aqueous electrolytic solution comprising an electrolyte and a non-aqueous solvent dissolving therein the electrolyte, the non-aqueous electrolytic solution containing the compound of claim 1 .
6. The non-aqueous electrolytic solution according to claim 5 , wherein the compound is contained in an amount of 0.01 to 5% by mass, based on 100% by mass of the non-aqueous electrolytic solution.
7. A non-aqueous electrolyte secondary battery comprising a negative electrode and a positive electrode each being capable of having occluded therein and releasing metal ions, and the non-aqueous electrolytic solution according to claim 6 .