Electrode, power storage device, and electronic device

A power storage device comprising:

• a positive electrode;
• a negative electrode comprising:
• a negative active material comprising an active material particle;
• a carbon fiber;
• a first film covering the active material particle, the first film comprising a first binder and a second binder;
• and
• a second film covering the active material particle and the first film, the second film comprising Li, F, O and C;
• and
• an electrolyte,
• wherein a first portion of the second film is in contact with the first film,
• wherein a second portion of the second film is in contact with the active material particle,
• wherein a surface of the carbon fiber is covered with the first binder and the second binder,
• wherein the first binder is a water-soluble polymer,
• wherein a thickness of the first portion of the second film is thinner than a thickness of the second portion of the second film, and
• wherein the power storage device is capable of being repeatedly bent.