A new polymer/polymer rechargeable battery: polyaniline/LiClO4(MeCN)/poly-1-naphthol

Electrosynthesized dedoped polyaniline (anode) and doped poly-1-naphthol (cathode) were used as electrode materials in a new rechargeable battery containing lithium perchlorate and perchloric acid in methyl cyanide (MeCN) as the electrolyte. The cell gave an open-circuit potential (OCP) of 1.4 V, a specific capacity of 150 Ah kg−1 and an energy density of 113 W h kg−1 (at a 1.0 V cutoff). The cell lost not, vert, similar5% of its capacity after 1 week due to the self-discharge. The charging/discharging tests (0.0–1.4 V) showed a gradual decrease in capacity up to 15% after 100 cycles. An advantage of such battery is the high power density (not, vert, similar9 kW kg−1 at OCP) because of the extended surface area of the polymer layer compared to the metal electrode.