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Batteries: Widening voltage windows


The energy output of aqueous batteries is largely limited by the narrow voltage window of their electrolytes. Now, a hydrate melt consisting of lithium salts is shown to expand such voltage windows, leading to a high-energy aqueous battery.

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Figure 1: Electrochemical stability windows of aqueous electrolytes and redox potentials of electrode materials.


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Correspondence to Kang Xu or Chunsheng Wang.

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Xu, K., Wang, C. Batteries: Widening voltage windows. Nat Energy 1, 16161 (2016).

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