nz9b01643_si_001.pdf (1.84 MB)
Breaking the 2 V Barrier in Aqueous Zinc Chemistry: Creating 2.45 and 2.8 V MnO2–Zn Aqueous Batteries
journal contribution
posted on 2019-08-18, 19:29 authored by Gautam G. Yadav, Damon Turney, Jinchao Huang, Xia Wei, Sanjoy BanerjeeWe
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.