Non-aqueous electrolyte secondary battery including tungsten
Abstract:
Provided is a non-aqueous electrolyte secondary battery with reduced resistance in a low SOC range, with the battery having a coating on its negative electrode active material. This invention provides a non-aqueous electrolyte secondary battery comprising a positive electrode that has a positive electrode active material layer comprising a positive electrode active material, a negative electrode that has a negative electrode active material layer comprising a negative electrode active material, and a non-aqueous electrolyte. The negative electrode active material has a coating. The coating comprises an oxalato complex-derived component and an N-methyl-2-pyrrolidone-derived component. The non-aqueous electrolyte secondary battery internally comprises tungsten. The tungsten content per unit capacity of the non-aqueous electrolyte secondary battery is 0.0048 g/Ah to 0.0078 g/Ah.
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