Poly(dihydroxybenzoquinone): its high-density and robust charge storage capability in rechargeable acidic polymer-air batteries.

A rechargeable acidic polymer-air battery was firstly fabricated with poly(2,5-dihydroxy-1,4-benzoquinone-3,6-methylene) (PDBM) as the anode, the conventional Pt/C cathode catalyst, and acidic aqueous electrolyte (pH 1). This battery yielded a high discharging capacity of 349 mA h gpolymer-1 with a long-lifetime of >500 cycles and high rate capabilities (up to 10C).