A Rechargeable Al/S Battery with an Ionic-Liquid Electrolyte
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- 作者：Tao Gao ; Xiaogang Li ; Xiwen Wang ; Dr. Junkai Hu ; Fudong Han ; Dr. Xiulin Fan ; Dr. Liumin Suo ; Alex J Pearse ; Prof. Sang Bok Lee ; Prof. Gary W. Rubloff ; Dr. Karen J Gaskell ; Dr. Malachi Noked and Prof. Chunsheng Wang
- 刊名：Angewandte Chemie
- 出版年：2016
- 出版时间：August 16, 2016
- 年：2016
- 卷：128
- 期：34
- 页码：10052-10055
- 全文大小：1228K
- ISSN：1521-3757
文摘
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 AlSx. 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.