Breaking the 2 V Barrier in Aqueous Zinc Chemistry: Creating 2.45 and 2.8 V MnO2–Zn Aqueous Batteries

By G. Yadav, D. Turney, Jinchao Huang, Xia Wei, Sanjoy Banerjee. ACS Energy Letters, 2019

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We report for the first time the creation of 2.45 and 2.8 V aqueous manganese dioxide (MnO2)|zinc (Zn) batteries without the use of expensive ion-selective membranes separating the anodes and cathodes. This new high-voltage aqueous battery (HiVAB) is able to charge and discharge 20–100% of MnO2’s theoretical capacity (308 mAh/g) repeatedly for many cycles, thereby establishing this new MnO2|Zn battery as the forerunner for the possible replacement of lithium-ion batteries for applications where cost, safety, and energy density characteristics are considered paramount.

Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/8084c9409a69d9b49efaa60652c46c0900cd5508