4.7 Article

A rechargeable aqueous aluminum-sulfur battery through acid activation in water-in-salt electrolyte

Journal

CHEMICAL COMMUNICATIONS
Volume 56, Issue 13, Pages 2023-2026

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c9cc08415k

Keywords

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Funding

  1. National Natural Science Foundation of China [51672262, 51761145046, 21975243]
  2. 100 Talents Program of the Chinese Academy of Sciences
  3. Fundamental Research Funds for the Central Universities, iChEM [WK2060140023]
  4. National Program for Support of Topnotch Young Professional

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We demonstrated a rechargeable aqueous Al-S battery based on a water-in-salt electrolyte with the configuration Al||Al(OTF)(3) + LiTFSI + HCl||S/C. The superconcentrated LiTFSI trapped water molecules to inhibit the hydrolysis of aluminum polysulfides in the cathode, and the HCl additive provided a mild acidic environment to enable repeatable oxidation-reduction reactions in the anode.

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