Tailoring the metal electrode morphology via electrochemical protocol optimization for long-lasting aqueous zinc batteries

Abstract Aqueous zinc metal batteries are a viable candidate for cost-effective energy storage. However, the cycle life of the cell is adversely affected by the morphological evolution of the metal electrode surface upon prolonged cycling. Here, we investigate different electrochemical protocols to favour the formation of stable zinc metal electrode surface morphologies. By coupling electrochemical and optical microscopy measurements, we demonstrate that an initial zinc deposition on the metal electrode allows homogeneous stripping and plating processes during prolonged cycling in symmetric Zn||Zn cell. Interestingly, when an initially plated zinc metal electrode is tested in combination with a manganese…

• CU
  City University of Hong Kong

  Awards: CityU 11212920, 11212920, 11305218, 2019YFA0705104, Project CityU 11305218, CityU 11305218