| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an alkaline storage battery capable of preventing occurrence of peeling of an active material even if a conductive core of a low porosity is used and capable of obtaining high output characteristics by reducing reactive resistance. <P>SOLUTION: The alkaline storage battery 10 is provided with a hydrogen storing alloy negative electrode 11 having hydrogen storing alloy as a negative electrode active material and a positive electrode 12 having nickel hydroxide as a main positive electrode active material, and an electrode group spirally wound through a separator 13 separating both the electrodes 11, 12, and alkaline electrolyte solution are housed in an outer can 16. Then, The porosity of the conductive core 11a used in the hydrogen storing alloy negative electrode 11 is 15%-25%, and polytetrafluoroethylene (PTFE) is applied on the surface of the hydrogen storing alloy negative electrode 11 by 0.02 mg/cm<SP>2</SP>-0.11 mg/cm<SP>2</SP>, the holding ratio of the electrolyte solution held by the hydrogen storing alloy negative electrode 11 is 23%-29% against the total electrolyte solution volume. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
