| abstract |
A positive electrode for an electrochemical device, comprising a positive electrode current collector and a positive electrode material layer supported on the positive electrode current collector, wherein the positive electrode material layer contains a positive electrode active material, and the positive electrode active material includes: a fibrous material containing polyaniline or a granular inner core portion, and a surface layer portion containing poly(3,4-ethylenedioxythiophene) and polythiophene and covering at least a part of the inner core portion. Furthermore, an electrochemical device includes the above-described positive electrode, a negative electrode having a negative electrode material layer that stores and releases lithium ions, and a non-aqueous electrolyte solution having lithium ion conductivity. |