| abstract |
(57) [Problem] To provide a non-aqueous electrolyte secondary battery excellent in low-temperature characteristics, long-term stability, cycle characteristics, and the like. SOLUTION: An electrode assembly in which a negative electrode and a positive electrode capable of inserting and extracting lithium are opposed to each other via a separator, and a non-aqueous electrolyte secondary battery in which a non-aqueous electrolyte is accommodated in a container. A non-aqueous electrolyte containing a lithium salt dissolved in a non-aqueous solvent containing an organic halide, and a portion of the positive electrode current collector and a portion electrically connected to the current collector that comes into contact with the non-aqueous electrolyte Is composed of a valve metal or an alloy thereof. |