abstract |
(57) Abstract: A lithium secondary battery comprising a positive electrode, a negative electrode, and a non-aqueous electrolyte, in which lithium metal is deposited on a negative electrode current collector 1 during charging and the lithium metal is dissolved during discharging, It is possible to suppress the dendrite-like precipitation of lithium metal and obtain a lithium secondary battery having excellent charge / discharge cycle characteristics. SOLUTION: A lithium metal deposition surface of a negative electrode current collector 1 is It is formed of a metal or an alloy, and is characterized in that the ten-point average roughness (Rz) defined by JIS B0601 is 10 μm or less. |