Lithium secondary battery

A lithium secondary battery is provided with a positive electrode, a negative electrode, a separator and an electrolyte solution, and wherein the positive electrode contains a first active material and a second active material that are capable of absorbing and desorbing lithium respectively. The first active material is only capable of desorbing lithium in a battery reaction with the negative electrode immediately after the assembly of the lithium secondary battery, while the second active material is capable of absorbing lithium in the battery reaction with the negative electrode immediatelyafter the assembly of the lithium secondary battery. The negative electrode contains lithium metal as an active material. The separator has a structure wherein voids are three-dimensionally regularlyarrayed. 本发明为种锂二次电池，其具备正极、负极、分隔件和电解液，正极包含分别能吸藏锂和解吸锂的第活性物质和第二活性物质。第活性物质在锂二次电池刚组装后的与负极的电池反应中处于仅能解吸锂的状态，第二活性物质在锂二次电池刚组装后的与负极的电池反应中处于能够吸藏锂的状态。负极包含金属锂作为活性物质。分隔件具有空孔成三维规则排列的结构。