| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a secondary battery in which charge and discharge characteristics are kept superior, in which energy density is high, and which has voltage a characteristic of 1.2 V. <P>SOLUTION: As for the secondary battery, charge and discharge characteristics are superior because a positive electrode using polyfluorene or its derivative and an electrolytic solution composed of an acidic aqueous solution are used, and energy density is high because the dope and de-dope of ions are used as an electricity storage mechanism, and the secondary battery having the voltage characteristic of 1.2 V which is the highest voltage as a battery using an aqueous electrolytic solution can be provided because a positive electrode is actuated in a state of p-doped oxidation-reduction potential which is higher than that of a conventional conductive polymer. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
