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

Claim 18:
19. A non-aqueous secondary battery, comprising:
a positive electrode and a negative electrode, each being capable of occluding and releasing lithium ions; and
an electrolyte,
wherein the negative electrode comprises a current collector and a negative electrode active material layer on the current collector, and wherein the negative electrode active material layer comprises the carbon material of claim 14, and
wherein the non-aqueous secondary battery has a higher upper limit charge voltage at −30° C. than an otherwise identical non-aqueous secondary battery using a carbon material having a cumulative pore volume, at a pore diameter of from 0.01 μm to 1 μm, of <0.08 mL/g, determined by mercury intrusion.