Carbonaceous material for negative pole active substance of nonaqueous electrolyte secondary battery, negative pole for nonaqueous electrolyte secondary battery, nonaqueous electrolyte secondary battery, and method for producing carbonaceous material

2:

• The carbonaceous material according to claim 1, wherein when lithium is doped into said carbonaceous material until a full charge state is established and a 7Li nucleus solid-state NMR analysis is conducted for the carbonaceous material, a main resonance peak is observed that is shifted toward a low magnetic field side by 115 to 145 ppm relative to a resonance peak of a reference substance LiCl.

3:

• The carbonaceous material according to claim 1, wherein a calcium element content is 50 ppm or less.

4:

• The carbonaceous material according to claim 1, wherein a true density determined in accordance with a butanol method is from 1.35 to 1.70 g/cm3.

5:

• The carbonaceous material according to claim 1, wherein a ratio of a meso pore volume to a micro pore volume each calculated in accordance with a DFT method is 1.0 or greater.

6:

• A negative pole, comprising:
• the carbonaceous material according to claim 1.

7:

• A nonaqueous electrolyte secondary battery, comprising:
• the negative pole according to claim 6.

8:

• A method for producing the carbonaceous material according to claim 1, the method comprising:
• applying thermal treatment to a char derived from a plant at from 1,100 to 1,300° C. in a gas flow of an inert gas comprising a halogen compound,
• wherein a supply amount of the inert gas is 14 L/min or more per 50 g of the char derived from a plant.