| 摘要 |
PROBLEM TO BE SOLVED: To manufacture a power storage device with little deterioration caused by charge and discharge and that has a negative electrode with high cycle characteristics.SOLUTION: A power storage device comprises a positive electrode, a negative electrode, and electrolyte provided between the positive electrode and the negative electrode. The negative electrode has a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer has: an uneven silicon layer formed on the negative electrode current collector; a silicon oxide layer or a mixed layer containing silicon oxide and a silicate compound, which is contacted with the silicon layer; and graphene contacted with the silicon oxide layer or the mixed layer containing the silicon oxide and the silicate compound.SELECTED DRAWING: Figure 1 |
