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- Title
A Rechargeable Al/S Battery with an Ionic-Liquid Electrolyte.
- Authors
Gao, Tao; Li, Xiaogang; Wang, Xiwen; Hu, Junkai; Han, Fudong; Fan, Xiulin; Suo, Liumin; Pearse, Alex J; Lee, Sang Bok; Rubloff, Gary W.; Gaskell, Karen J; Noked, Malachi; Wang, Chunsheng
- 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.
- Subjects
STORAGE batteries; ALUMINUM batteries; IONIC liquids; ELECTROLYTES; ANODES; ENERGY density
- Publication
Angewandte Chemie, 2016, Vol 128, Issue 34, p10052
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201603531