Abstract
Both aluminum and sulfur are promising materials for future-generation electrochemical energy storage technology owing to their natural abundance, low cost, and high capacity. However, a rechargeable aluminum–sulfur (Al–S) battery with high energy density suffers from poor reversibility and very short cycle life. This paper demonstrates an Al–S battery which comprised of a MWCN/S cathode, aluminum anode and deep eutectic solvent of AlCl3/acetamide. The Al–S battery delivers an initial capacity of ∼453 mAh g−1 and maintains a capacity of up to ∼358 mAh g−1 after 200 cycles.
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