STUDIES ON THE COMPONENTS OF ALUMINUM NEGATIVE ELECTRODE FOR THE SECONDARY BATTERIES WITH ROOM-TEMPERATURE MOLTEN-SALT ELECTROLYTE

The aluminum negative electrode for the secondary battery with an AlCl 3-1-butylpyridinium chloride molten salt electrolyte has been develope d. The active material, binder, and conductor far the battery were inv estigated to improve the Al negative electrode performance. The optimu m conditions in the present study were: Al powder of 180 mu m average particle size as the active material, PTFE as the binder, and graphite fiber of 130 mu m length for the conductor. By the SEM photograph, th ese components were connected skillfully. When their optimum contents of 78.0wt% Al powder, 11.7wt% PTFE, and 10.4wt% graphite fiber were ap plied, the discharge capacity showed about 140mAh . g(-1), and the cyc le efficiency and cycle life were 100% up to 50 cycles and 85 cycles, respectively.