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Hybrid Aqueous/Non‐aqueous Electrolytes for Lithium‐Ion and Zinc‐Ion Batteries: A Mini‐Review

Von Wiley-VCH zur Verfügung gestellt

Electrolytes with organic species: This review provided a comprehensive summary of the latest progress of hybrid aqueous/non-aqueous electrolytes with different types of organic species, including small organic molecules, molecular crowding agents, ionic liquids, deep eutectic solvents and polymers. Their unique electrochemistry and how the hybrid solvation structures adjust the electrochemical stability of aqueous batteries are also discussed.


Abstract

In recent years, the development of aqueous lithium-ion batteries and aqueous zinc-ion batteries has received extensive attention thanks to the advantages of high safety, environmental friendliness, and easy assembly conditions. However, aqueous batteries are always restricted in terms of limited cycling stability and low energy density due to their intrinsically narrow electrochemical window, hydrogen evolution, and side reactions. These problems can be remarkably alleviated by hybridizing aqueous/non-aqueous electrolytes; however, few detailed discussions on relevant strategies have been reported. In this mini-review, we summarize the latest progress and contributions of various hybrid aqueous/non-aqueous electrolytes for rechargeable aqueous lithium-ion batteries and aqueous zinc-ion batteries. The current challenges and development directions are also discussed for hybrid electrolytes.

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