Electric Storage Device and Electric Storage Apparatus

An electric storage device comprising:

• an electrode assembly;
• and
• an electrolytic solution at least part of which is impregnated into the electrode assembly, wherein
• the electrode assembly includes, as electrode assembly forming members, at least a positive electrode and a negative electrode that face each other and contains lithium carbonate,
• the electrolytic solution contains at least lithium hexafluorophosphate,
• at least one of the positive electrode and the negative electrode includes an active material layer containing a metal compound,
• the active material layer includes a peripheral area and an inner area inside the peripheral area,
• the electrode assembly includes a high-content part the ratio of lithium carbonate content of which is higher than that of the inner area, and
• the high-content part is formed in at least part of the electrode assembly forming members of the electrode assembly facing the peripheral area of the active material layer in a layer thickness direction thereof.