Non-aqueous electrolyte secondary cell
Abstract:
The non-aqueous electrolyte secondary cell according to the present invention comprises: an electrode body constituted by a positive electrode including a positive electrode active material comprising a lithium-containing transition metal oxide, a negative electrode including a negative electrode current collector onto which metallic lithium is deposited during charging, and a separator disposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte. The molar ratio of the total lithium content of the positive electrode and the negative electrode to the transition metal content of the positive electrode is 1.1 or less. During discharging, the positive electrode capacitance α(mAh) of the positive electrode and the volume X (mm3) of a hollow constituted by a space formed in the center of the electrode body 14 satisfy the relationship 0.5≤X/α≤4.0.
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