| 摘要 |
PURPOSE:To obtain a chargable lithium battery which has a large discharge capacity and a high energy density, by using hydrated iron oxide as an active material of a lithium battery. CONSTITUTION:Either a hydrated-iron-oxide powder alone or a mixture of that with a binding-agent powder is placed on a supporting body made of nickel, a stainless steel or the like, before it is compressed and molded to make a layer on the supporting body, thus a positive electrode being formed. Or else, either a mixture of a hydrated iron-oxide powder with a carbon powder for giving conductivity which is packed in a metal case, or this mixture added with a binding agent which is placed on a supporting body made of nickel, a stainless steel or the like, is compressed and molded, thus a positive electrode being formed. The hydrated iron oxide is prepared, for example, by adding NaOH to an aqueous Fe2(SO4)3 solution, before the mixture is oxidized to become gamma-FeOOH. A sheetlike lithium is used as a negative active material. An electrolyte is made of a combination of an aprotic organic solvent such as propylene carbonate, ethylenecarbonate or gamma-butyrolactone with a lithium salt such as LiClO4, LiAlCl4, or LiCl. |
