NONAQUEOUS LITHIUM SECONDARY CELL, AND MANUFACTURING METHOD OF THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a nonaqueous lithium secondary cell capable of charging and discharging at ultra-high speed.

SOLUTION: For the nonaqueous lithium secondary cell having a positive current collector electrode to which, positive active material is adhered, a ultra- high speed charge/discharge with excellent charging/discharging characteristic is obtained by adjusting the amount of positive active material m [g/cm2] adhered to the metallic surface of the positive current collector so as to satisfy the relation m≤(η/σ)×(1/CQ), on condition that η [V] represents the decomposition overpotential of the electrolytic solution, σ [Ωcm2] represents the contact resistance the between the positive current collector and the positive material including the positive current collector, Q [mAh/g] represents the theoretical quantity of electricity of the lithium compound oxide, and C [h-1] represents the C rate of the lithium cell.

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