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
Abstract 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:
- DESC0001160
- OSTI ID:
- 1400995
- Journal Information:
- Angewandte Chemie (International Edition), Journal Name: Angewandte Chemie (International Edition) Vol. 55 Journal Issue: 34; ISSN 1433-7851
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- Germany
- Language:
- English
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