| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage device capable of obtaining high safety by effectively suppressing a short circuit between a positive electrode and a negative electrode, excellent in electrolyte retention characteristics, and capable of obtaining large electrostatic capacity and high energy density.SOLUTION: A power storage device includes: an electrode unit including a positive electrode and a negative electrode alternately laminated via a separator, each of the positive electrode and the negative electrode having an active material layer formed in a collector; and an electrolyte. The separator includes an inorganic particle on at least one face of a nonwoven fabric. The nonwoven fabric contains a polyvinylidene fluoride fiber or a polyvinylidene fluoride copolymer fiber, and has a basis weight of 8-12 g/m. |
