Coordination modulation of hydrated zinc ions to enhance redox reversibility of zinc batteries

The dendrite growth of zinc and the side reactions including hydrogen evolution often degrade performances of zinc-based batteries. These issues are closely related to the desolvation process of hydrated zinc ions. Here we show that the efficient regulation on the solvation structure and chemical properties of hydrated zinc ions can be achieved by adjusting the coordination micro-environment with zinc phenolsulfonate and tetrabutylammonium 4-toluenesulfonate as a family of electrolytes. The theoretical understanding and in-situ spectroscopy analysis revealed that the favorable coordination of conjugated anions involved in hydrogn bond network minimizes the activate water molecules of hydrated zinc ion, thus…

• SU
  Shandong University
• NN
  National Natural Science Foundation of China

  Awards: ZR2020JQ09, 22175108
• UO
  University of Science and Technology of China
• NS
  National Synchrotron Radiation Laboratory
• NN
  National Natural Science Foundation of China-Yunnan Joint Fund

  Award: 22175108