| abstract |
[Problem] To provide a non-aqueous electrolyte solution having an excellent cycle capacity retention rate and low-temperature resistance characteristics, and a non-aqueous electrolyte rechargeable battery that uses the non-aqueous electrolyte solution. [Solution] The present invention provides a non-aqueous electrolyte that improves a cycle capacity retention rate and low-temperature resistance characteristics, and a non-aqueous electrolyte rechargeable battery that uses the non-aqueous electrolyte solution. The present invention involves: a non-aqueous electrolyte solution that includes an electrolyte and a non-aqueous organic solvent for dissolving the electrolyte, and contains a compound represented by formula (1); and a non-aqueous electrolyte rechargeable battery that includes the non-aqueous electrolyte solution. (In the formula, X represents an organic group that includes 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, and l represents an integer of 1 or 2. Z represents a C4-12 organic group which may contain a heteroatom.) |