| 摘要 |
PROBLEM TO BE SOLVED: To provide a material for an electrode, that is composed of a layer- like manganese dioxide and has a good cycle property, its manufacturing method and a cell that comprises the layer-like manganese dioxide for the electrode material as an activating material for a positive electrode. SOLUTION: A dehydrated layer-like manganese dioxide expressed in formula (1), its manufacturing method and the cell comprising the compound as the positive electrode are used: (1) MXMnO2-δ.nH2O [M is an element or more comprising any elements of Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, Al, Ni, La, Bi, 0.1<=X<=0.5, -2.0<=δ<=0.2 and 0.5<=n<=1.0] A concrete example of a coin type cell is composed of a sealing plate 1, a gasket 2, a positive electrode case 3, a negative electrode 4, and a mixture pellet for the positive electrode 6. It provides the cell featuring a good cycle property and many applications to various fields, including the application as a power source for a number of electronic devices. |
