Power storage device, method for manufacturing power storage device, and electronic device

A power storage device comprising:

• a positive electrode;
• a negative electrode;
• a separator;
• an electrolytic solution;
• and
• an exterior body,
• wherein the exterior body comprises a plurality of projections and a plurality of depressions formed at regular intervals in a long axis direction of the power storage device,
• wherein one of the plurality of projections and one of the plurality of depressions are formed so as to extend in a short axis direction of the power storage device,
• wherein the positive electrode comprises a positive electrode active material layer and a positive electrode current collector,
• wherein the negative electrode comprises a negative electrode active material layer and a negative electrode current collector,
• wherein the separator is located between the positive electrode and the negative electrode,
• wherein the separator comprises polyphenylene sulfide or solvent-spun regenerated cellulosic fiber,
• wherein the electrolytic solution comprises a solute and two or more kinds of solvents, and further comprises propane sultone as an additive,
• wherein the solute comprises lithium bis(pentafluoroethanesulfonyl)amide, and
• wherein the solvents comprise propylene carbonate and ethylene carbonate.