Patent ID: 11936044
Assignee: MITSUBISHI CHEMICAL CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC C  H

Claim 13:
14. A carbon material, comprising:
a graphite capable of occluding and releasing lithium ions,
wherein the carbon material has a total pore volume in a range of from 0.7 to 10 mL/g, determined by mercury intrusion,
wherein the carbon material has a Raman R value of 0.2 or greater,
wherein the carbon material has a cumulative pore volume, at a pore diameter of from 0.01 μm to 1 μm, of 0.08 mL/g or more, determined by mercury intrusion,
wherein the carbon material has a roundness, as determined by a flow-type particle image analysis, of 0.88 or greater,
wherein the carbon material has a ratio of a pore diameter to a particle diameter, PD/d50(%), of 1.8 or less, the ratio following equation (1A):

PD/d50(%)=mode pore diameter (PD) in a pore diameter range of 0.01 μm to 1 μm in a pore distribution determined by mercury intrusion/volume-based average particle diameter (d50)×100  (1A), and

wherein the carbon material is suitable for a non-aqueous secondary battery.