High power output non-aqueous electrolyte secondary battery

A high power output non-aqueous electrolyte secondary battery comprising:

• a positive electrode including a lithium-containing composite oxide;
• a negative electrode including a carbon material capable of absorbing and desorbing lithium ions;
• and a non-aqueous electrolyte,
• wherein said carbon material comprises a graphitizable carbon material, and
• said graphitizable carbon material has an average particle size of 5 μm to 15 μm, and
• wherein in a diffraction pattern of said graphitizable carbon material measured by wide-angle powder X-ray diffractometry, a ratio:
• I(101)/I(100) of a peak intensity I(101) attributed to a (101) plane to a peak intensity I(100) attributed to a (100) plane satisfies 0<I(101)/I(100)<1.0, and
• a ratio:
• I(110)/I(004) of a peak intensity I(110) attributed to a (110) plane to a peak intensity I(004) attributed to a (004) plane satisfies
• 0.7≦I(110)/I(004)≦1.4.