| 摘要 |
PROBLEM TO BE SOLVED: To provide a secondary battery more advantageous in space. SOLUTION: In the secondary battery in which a positive electrode having lithium compound(s) as a positive electrode active substance, a negative electrode having compound(s) capable of doping/de-doping lithium as a negative electrode active substance, a spacer to insulate the positive electrode and the negative electrode, and nonaqueous electrolyte are encapsulated in the sheath material, the shape of the secondary battery is cylindrical, and for example, a part of the sheath part of an electronic pen is made a part of the outer case. |
