Polypyrrole/PPO and polypyrrole/SPPO, conducting polymer composite, were made by a oxidative chemical polymerization with changing the contents of pyrrole and PPO using FeCl₃ act as a dopant and a initiator. The electrode was made by hot press on Cu exmat after mix conducting polymer composite and Super-P, and was examined electrochemical characteristics to penetrate to 1 M LiClO₄ + PC/DMC. The charge discharge performance of the PPy/SPPO composite electrode was increased the extent of about 50% compared to that of PPy/PPO. The reason is that the miscibility, contact area and affinity are promoted owing to the effect of sulfonation.