| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage device including a positive electrode active material with improved conductivity and a power storage device including the same, and to provide a positive electrode active material of large capacitance and a power storage device including the same.SOLUTION: For a core of a main material of a positive electrode active material, a core made of a lithium metal oxide is used. One to ten sheets of graphene are used for the core. By providing pores in the graphene, it is possible to make lithium ions easily pass and to enhance utilization efficiency of a current.SELECTED DRAWING: Figure 1 |
