| 摘要 |
PURPOSE:To improve cycle characteristic by using, as a solvent for electrolyte, an organic solvent made of propylene carbonate mixed with diethylene glycol diethyl ether. CONSTITUTION:An organic solvent made of propylene carbonate mixed with diethylene glycol diethylether in volume proportion of 1/9-4 is used as a solvent for electrolyte for a secondary battery of which at least one electrode is made of a conductive polymer. In this case, solvation of anion and diethylene glycol diethyl ether tends to become disconnected due to interaction between the diethylene glycol diethyl ether and the conductive polymer. This tendency becomes particulary conspicuous when what is easily be doped like poly aniline and poly pyrrole composed of 6-ring or 5-ring macro molecules including nitrogen atoms is used as the conductive polymer. By this method, decomposition of an electrolyte, a dopant, or the conductive polymer, is inhibited, which results in the improved battery cycle characteristic. |
