| 摘要 |
PURPOSE:To obtain a nonaqueous solvent battery with large battery capacity and preferable charging/discharging cycle by melting vanadium pentoxide as positive electrode active material, at a specified temperature and employing the compound obtained by cooling the melted vanadium pentoxide. CONSTITUTION:A group of electrodes 3 are enclosed in a stainless case 1 through an insulator 2. The group of electrodes 3 has the structure that a strip member in which positive electrodes 4, separators 5 and negative electrodes 6 are sequentially laminated is wound in spiral with a negative electrode being provided outermost. As for the active material of the positive electrode 4, powders of V2O5 and P2O5 are mixed with each other, melted at 800 deg.C to 1200 deg.C and cooled down rapidly to obtain pelletized material. This material is ground into powder of noncrystal V2O5 compound. The powder is mixed with powder of acetylene black and polytetrafluoroethylene to be a sheet which is pressed and fixed on an expander metal current collector to be a strip. Therefore, a nonaqueous solvent battery with large battery capacity and preferable charging/discharging cycle is obtained. |
