CELL, NEGATIVE ELECTRODE, POSITIVE ELECTRODE, AND MANUFACTURING METHOD OF THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a cell with big discharge capacity and safety at low cost, and to provide a manufacturing method of an electrode used for the cell. SOLUTION: The cell comprises a positive electrode containing a material which can reversibly adsorb/release ion with two or three valence, a negative electrode containing a metal element obtained by the reduction of the ion or a compound of the metal element, or a material which can reversibly adsorb/ release ion, and a material which can make ion move in order to chemically react with the positive and negative electrodes as an electrolyte. The cell with big discharge capacity and safety is realized at low cost, which can be utilized for various usage like a power source of various kinds of portable electronic devices.