【摘 要】
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Aqueous organic flow batteries have attracted dramatic attention for stationary energy storage due to their resource sustainability and low cost.However,the cur
【机 构】
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Division of Energy Storage, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemica
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Aqueous organic flow batteries have attracted dramatic attention for stationary energy storage due to their resource sustainability and low cost.However,the current reported systems can normally be operated stably under a nitrogen or argon atmosphere due to their poor stability.Herein a stable airinsensitive biphenol derivative cathode,3,3',5,5'-tetramethylaminemethylene-4,4'-biphenol (TABP),with high solubility (＞1.5 mol L-1) and redox potential (0.91 V vs.SHE) is designed and synthesized by a scalable one-step method.Paring with silicotungstic acid (SWO),an SWO/rABP flow battery shows a stable performance of zero capacity decay over 900 cycles under the air atmosphere.Further,an SWO/TABP flow battery manifests a high rate performance with an energy efficiency of 85％ at a current density of 60 mA cm-2 and a very high volumetric capacity of more than 47 Ah L-1.This work provides a new and practical option for next-generation practical large-scale energy storage.
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