Raw material of negative electrode material for nonaqueous secondary batteries, negative electrode material for nonaqueous secondary batteries, negative electrode for nonaqueous secondary batteries, and nonaqueous secondary battery

A negative electrode material for a nonaqueous secondary battery, having:

• a Raman R1 value, which is calculated by the following Formula α, of 0.15 or more and 1.00 or less;
• a Raman full width at half maximum (ΔνR) of 65 cm−1 or more and 400 cm−1 or less;
• and a cumulative pore volume of 0.100 mL/g or less in a pore size range of 0.01 μm or more and 1 μm or less, and satisfying at least one of the following conditions (1) and (2) in a DTA curve obtained by differential thermal analysis (DTA) in an air stream:
• (1) the negative electrode material has no exothermic peak in a temperature range of 550° C. or higher and 650° C. or lower;
• and
• (2) the negative electrode material has an exothermic peak in a temperature range of 550° C. or higher and 650° C. or lower, and the area of the exothermic peak is larger than 0 μV·s/mg but 90 μV·s/mg or smaller,
• [Raman R1 value]=[Intensity IB of peak PB near 1,360 cm−1]/[Intensity IA of peak PA near 1,580 cm−1] in Raman spectrum analysis. Formula α:

A negative electrode material for a nonaqueous secondary battery, comprising a graphite that contains at least either one of an amorphous carbonaceous material and a graphitic material in at least a part of the surface thereof,

• wherein,
• the negative electrode material has a pore distribution with two or more peaks as measured by a mercury intrusion method, and satisfies the following Formulae (1) and (2) when a cumulative pore volume of not larger than a minimal value of a valley between a peak with the smallest pore size and a next peak is defined as y [mL/g] and a coating ratio of the amorphous carbonaceous material and the graphitic material on the graphite surface is defined as x (%), and
• the pore size at a peak top of the peak with the smallest pore size is 360 nm or smaller:
• y>0.005, and Formula (1):
• y<−0.006x+0.12. Formula (2):

A negative electrode material for a nonaqueous secondary battery, comprising a graphite that contains at least either one of an amorphous carbonaceous material and a graphitic material in at least a part of the surface thereof,

• wherein
• the negative electrode material has a pore distribution with two or more peaks as measured by a mercury intrusion method, and satisfies the following Formulae (1) and (3) when a cumulative pore volume of not larger than a minimal value of a valley between a peak with the smallest pore size and a next peak is defined as y [mL/g] and a coating ratio of the amorphous carbonaceous material and the graphitic material on the graphite surface is defined as x (%):
• y>0.005, and Formula (1):
• y<−0.006x+0.079. Formula (3):