| 摘要 |
PROBLEM TO BE SOLVED: To obtain a high-capacity, thin and small, and highly-reliable power storage device.SOLUTION: The power storage device includes: a positive electrode having a positive electrode collector, a positive electrode active material provided on the positive electrode collector and having a plurality of first projections, and a first insulator provided on each front end of the plurality of first projections; a negative electrode having a negative electrode collector, a negative electrode active material provided on a surface of the negative electrode collector and having a plurality of second projections, and a second insulator provided on each front end of the plurality of second projections; a separator provided between the positive electrode and the negative electrode; and an electrolyte provided in a space between the positive electrode and the negative electrode and including carrier ions. Each of the first projections and second projections has a ratio of a width and a height of 3 or more and 1,000 or less. |
