Patent ID: 7923150

Claim:
A non-aqueous electrolyte secondary battery comprising a positive electrode, a negative electrode, and a non-aqueous electrolyte, wherein: said positive electrode includes a positive electrode active material that comprises a lithium-containing manganese oxide, said negative electrode includes a negative electrode active material that comprises silicon and a transition metal element, said negative electrode comprises a molded negative electrode mixture that contains said negative electrode active material, and said molded negative electrode mixture has a thickness of 0.05 mm to 2.0 mm, said positive electrode comprises a molded positive electrode mixture that contains said positive electrode active material, and said molded positive electrode mixture has a thickness of 0.30 mm to 3.0 mm, the battery is in a coin shape, when the battery voltage is 0 V, said positive electrode and said negative electrode have a potential of 1.8 V or higher relative to lithium metal (Li/Li+), and the negative electrode and the positive electrode are designed so that capacity of said negative electrode is smaller than capacity of said positive electrode for capacity of the battery to be limited by the capacity of said negative electrode.