4.7 Article

A Dendrite-Resistant Zinc-Air Battery

Journal

ISCIENCE
Volume 23, Issue 6, Pages -

Publisher

CELL PRESS
DOI: 10.1016/j.isci.2020.101169

Keywords

-

Funding

  1. National Key Research and Development Program of China [2017YFB0102705, 2016YFB0101305, 2016YFB0101208, 2018YFA0702003]
  2. National Natural Science Foundation of China [21975143, 21706013, 21676158, 21890383, 21925202]
  3. Beijing Natural Science Foundation [JQ18007]
  4. Tsinghua University Initiative Scientific Research Program

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Zinc-air batteries (ZABs) have drawn widespread attention for their high energy densities, abundant raw materials, and low cost. However, the issues of metal dendrite formation and air electrode failure have been impeding the development and application of ZABs. Herein, we designed a novel dendrite-resistant ZAB system by adopting multiphase electrolytes to conduct the zinc deposition and the oxygen evolution reaction. The oxygen reduction reaction electrode is kept out of the zinc deposition region to extend the lifespan. The ZABs show an energy density of 1,050.9 Wh kg(-1) based on the mass of zinc consumption, with an average Coulombic efficiency of similar to 97.4% in 2,000 h discharge and charge cycling. More impressively, even if a short circuit occurs while charging, the battery can maintain the cycle performance without irreversible failure, which is conducive to the reliability of battery modules and its application in other energy storage/conversion devices.

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