Patent ID: 9627715
Date: 2017-04-18
CPC Classifications: H01M,Y02E,Y02P

Claim:
1. A non-aqueous electrolyte secondary battery comprising: an exterior member; a negative electrode containing a titanium-containing oxide housed in the exterior member; a positive electrode housed in the exterior member; a separator housed in the exterior member, and arranged between the positive electrode and the negative electrode; and a non-aqueous electrolyte solution housed in the exterior member, wherein at least one type or more chain carbonates are contained in a solvent of the non-aqueous electrolyte solution, a self-diffusion coefficient of the chain carbonate in −20° C. is from 1.4×10 the separator includes a hole having a diameter of from 10 to 100 μm, Rsol<20 Ω·cm Rsol/Rct>0.16 is satisfied where the magnitude of resistance of the non-aqueous electrolyte secondary battery at a time of application of an alternating-current voltage of 1 kHz in −20° C. is Rsol, and the magnitude of resistance at a time of application of an alternating-current voltage of 0.1 Hz is Rct, the non-aqueous electrolyte solution includes lithium electrolyte, and the lithium electrolyte includes LiPF