Non-aqueous secondary battery having negative electrode including graphite powder

Electrodes for a non-aqueous secondary battery, comprising:

• a positive electrode, and
• a negative electrode, wherein
• said negative electrode comprises graphite powder which has a particle size equal to or smaller than 100 μm and which has an intensity ratio (P2/P1) equal to or less than 0.92, wherein P1 is a diffraction peak of hexagonal crystal structure which appears in a range of the diffraction angle from 41.7 degrees to less than 42.7 degrees and P2 is a diffraction peak of rhombohedral crystal structure which appears in a range of the diffraction angle from 42.7 degrees to 43.7 degrees in a X-ray diffraction pattern with the CuKα line.

Electrodes for a non-aqueous secondary battery, comprising:

• a positive electrode, and
• a negative electrode, wherein
• said negative electrode comprises graphite powder which has a particle size equal to or smaller than 100 μm and which has an intensity ratio (P3/P3) equal to or less than 0.75, wherein P1 is a diffraction peak of hexagonal crystal structure which appears in a range of the diffraction angle from 41.7 degrees to less than 42.7 degrees and P3 is a diffraction peak of rhombohedral crystal structure which appears in a range of the diffraction angle from 45.3 degrees to 46.6 degrees in a X-ray diffraction pattern with the CuKα line.

Electrodes for a non-aqueous secondary battery, comprising:

• a positive electrode, and
• a negative electrode, wherein
• said negative electrode comprises graphite powder which has an intensity ratio (P2/P1) equal to or less than 0.92, wherein P1 is a diffraction peak of hexagonal crystal structure which appears in a range of the diffraction angle from 41.7 degrees to less than 42.7 degrees and P2 is a diffraction peak of rhombohedral crystal structure which appears in a range of the diffraction angle from 42.7 degrees to 43.7 degrees in a X-ray diffraction pattern with the CuKα line.

Electrodes for a non-aqueous secondary battery, comprising:

• a positive electrode, and
• a negative electrode, wherein
• said negative electrode comprises graphite powder which has an intensity ratio (P3/P1) equal to or less than 0.75, wherein P1 is a diffraction peak of hexagonal crystal structure which appears in a range of the diffraction angle from 41.7 degrees to less than 42.7 degrees and P3 is a diffraction peak of rhombohedral crystal structure which appears in a range of the diffraction angle from 45.3 degrees to 46.6 degrees in a X-ray diffraction pattern with the CuKα line.