A cell developed to solve the problems of a conventional cell that a large short-circuit current flows when the temperature of the cell is raised above 100 °C due to internal short circuit, whereby the temperature of the cell is further raised due to heat buildup and a further increased short-circuit current flows, and that depending upon the constitution of the electrode, the discharge capacity is small. Specifically a cell in which an electron conductive material (9) in contact with an active material (8) in the electrode contains an electrically conductive filler and a resin so that the resistance of the electrode may increase with temperature, and in which the ratio of the particle diameter of the active material (8) to that of the electron conductive material (9) is adjusted to 0.1 to 20.