A Rechargeable Al/S Battery with an Ionic‐Liquid Electrolyte
- Department of Chemical and Bimolecular Engineering University of Maryland College Park MD 20740 USA
- Department of Chemistry and Biochemistry University of Maryland College Park MD 20740 USA
- Department of Material Science and Engineering University of Maryland College Park MD 20740 USA
- Department of Material Science and Engineering University of Maryland College Park MD 20740 USA, Department of Chemistry and Biochemistry University of Maryland College Park MD 20740 USA
Aluminum metal is a promising anode material for next generation rechargeable batteries owing to its abundance, potentially dendrite‐free deposition, and high capacity. The rechargeable aluminum/sulfur (Al/S) battery is of great interest owing to its high energy density (1340 Wh kg −1 ) and low cost. However, Al/S chemistry suffers poor reversibility owing to the difficulty of oxidizing AlS x . Herein, we demonstrate the first reversible Al/S battery in ionic‐liquid electrolyte with an activated carbon cloth/sulfur composite cathode. Electrochemical, spectroscopic, and microscopic results suggest that sulfur undergoes a solid‐state conversion reaction in the electrolyte. Kinetics analysis identifies that the slow solid‐state sulfur conversion reaction causes large voltage hysteresis and limits the energy efficiency of the system.
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- SC0001160
- OSTI ID:
- 1400995
- Alternate ID(s):
- OSTI ID: 1388259
- Journal Information:
- Angewandte Chemie (International Edition), Journal Name: Angewandte Chemie (International Edition) Journal Issue: 34 Vol. 55; ISSN 1433-7851
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- Germany
- Language:
- English
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