A Sustainable Redox‐Flow Battery with an Aluminum‐Based, Deep‐Eutectic‐Solvent Anolyte
作者： Changkun Zhang , Yu Ding , Leyuan Zhang , Xuelan Wang , Yu Zhao
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摘要: Nonaqueous redox-flow batteries are an emerging energy storage technology for grid systems, but the development of anolytes has lagged far behind that catholytes due to major limitations redox species, which exhibit relatively low solubility and inadequate potentials. Herein, aluminum-based deep-eutectic-solvent is investigated as anolyte batteries. The deep-eutectic solvent demonstrated a significantly enhanced concentration circa 3.2 m in potential 2.2 V vs. Li+/Li. electrochemical measurements highlight reversible volumetric capacity 145 Ah L−1 density 189 Wh L−1 or 165 Wh kg−1 have been achieved when coupled with I3−/I− catholyte. prototype cell also extended use Br2-based catholyte, exhibiting higher voltage theoretical over 200 Wh L−1. synergy highly abundant, dendrite-free, multi-electron-reaction aluminum anodes environmentally benign reveals great towards cost-effective, sustainable
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