articleAngewandte Chemie International EditionMar 27, 2024Closed access

Spontaneous Molecule Aggregation for Nearly Single‐Ion Conducting Sol Electrolyte to Advance Aqueous Zinc Metal Batteries: The Case of Tetraphenylporphyrin

JDJingjing DongLSLong SuHPHuili PengDWDongdong WangHZHanwen Zong

Shandong University · Linyi University · +1 more institution

PubMed
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Abstract

Abstract Zn metal as a promising anode of aqueous batteries faces severe challenges from dendrite growth and side reactions. Here, tetraphenylporphyrin tetrasulfonic acid (TPPS) is explored as an electrolyte additive for advanced Zn anodes. It is interesting to note that TPPS spontaneously assembles into unique aggregates. As they adsorb on the Zn anode, the aggregates enhance the resistance to electrolyte percolation and dendrite growth compared to single molecules. Meanwhile, TPPS facilitates anion association in the solvation sheath of Zn 2+ , and boosts the transference number of Zn 2+ up to 0.95. Therefore, anion‐related side reactions and anion‐induced electrode overpotentials are reduced accordingly. In…

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Topics & keywords

Topics
Keywords
  • Tetraphenylporphyrin
  • Zinc
  • Electrolyte
  • Aqueous solution
  • Metal
  • Molecule
  • Ion
  • Inorganic chemistry
UN Sustainable Development Goals
  • Clean water and sanitation
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