| abstract |
Provided is a lithium-ion secondary battery having excellent cycle properties. The lithium-ion secondary battery is provided with a positive electrode 5, and a negative electrode 6 having a current collector plate on which a negative electrode mixture layer, which includes a negative electrode active material and a binder, is formed. The breaking strength of the binder is 80 MPa to 400 MPa, and the breaking strength of the current collector plate is 600 MPa to 1,100 MPa. |