The construction of a new type of rechargeable Zn2+ aqueous ion battery

After the joint efforts of our team, a new type of water-based rechargeable zinc-ion battery is proposed, which is composed of a zinc anode, a cathode mixed by carbon black, manganese dioxide, and Prussian blue. With 330 mAh g−1 of reversible specific capacity, the battery has a stability of up to 1450 cycles thanks to the stability of Fe (CN)64-. Through X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM), we have proved that the reversible deintercalation-intercalation of Zn2+ in the cathode is the reaction mechanism of the battery.