A cell developed to solve the problem of a conventional cell that a large short-circuit current flows when the temperature of the cell is raised 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. Specifically a cell in which at least either a positive electrode (1) or a negative electrode (2) is provided with an active material layer (6) containing an active material (8) and an electron conductive material (9), and a solid electrolytic layer (3) is sandwiched between the positive electrode (1) and the negative electrode (2). The electron conductive material (9) contains an electrically conductive filler and a resin and has a resistance increasing with temperature.