| 摘要 |
PURPOSE:To obtain a small secondary battery which has a large charge-and-discharge capacity as well as a long charge-and-discharge life, and which can provide a large current by using a specified compound as a positive active material. CONSTITUTION:In a lithium-MX5 secondary battery, a compound represented by the general formula MX5 (M represents Zr and/or Hf; X, Te) is used as a positive active material, lithium is used as a negative active material, and electrolyte is prepared by using a compound which is chemically stable to both the positive active material and lithium and which allows lithium ions to move and electrochemically react with the positive active material. The positive electrode of the battery is made by pressing and molding either a powder of a compound indicated by the formula MX5 or a mixture powder consisting of the above powder and a binding agent powder such as polytetrafluoroethylene powder, in film-like form, upon a supporting body made of nickel, a stainless steel or the like. Lithium used as the negative active material is formed into a sheet in the same manner as in a general lithium battery, and thus formed sheet is pressed and attached to a conductive net made of nickel, a stainless steel or the like so as to make a negative electrode. As the electrolyte, generally, a known electrolyte matter which is used in a battery containing lithium as a negative active material, can be used. |
