Abstract: Poly-2-aminopyridine was synthesized using potential cycling in the solution of 0.43 mol•dm－3 2-aminopyridine and 0.01 mol•dm－3 NaOH. There are three pairs of redox peaks on the cyclic voltammogram of poly-2-aminopyridine in the solution of 1.0 mol•dm－3 ZnCl2 (pH=4.99). The experiments of rotating ring-disk electrode(RRDE)indicate that an intermediate is generated in the initiation of polymerization. The IR spectra indicate that poly-2-aminopyridine has head-to-tail structure. According to the results of atom force microscope the average particle size of poly-2-aminopyridine is about 893.4 nm, and the average distance between particles is about 255 nm. The discharge behavior of the battery consisting poly-2-aminopyridine as cathode, and zinc as anode in an electrolytic solution of 2.5 mol•dm－3 ZnCl2＋3.0 mol•dm－3 NH4Cl (pH=5.5) is very similar to that of the battery of Li-SOCl2. The discharge curve is very flat in the middle region.

Key words: 2-aminopyridine, Electrochemical polymerization, Cyclic voltammetry, 　Poly-2-aminopyridine, Partical size