| CPC H01G 9/035 (2013.01) [H01G 9/0029 (2013.01); H01G 9/10 (2013.01); H01G 9/145 (2013.01); H01G 11/60 (2013.01); H01G 11/80 (2013.01); H01G 11/84 (2013.01); H01M 10/0563 (2013.01); H01M 2300/0014 (2013.01)] | 7 Claims |

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1. An aqueous electrolyte solution, at least comprising: a solvent and cations of at least two types, wherein the solvent is water, and the cations of the two types are alkali metal cations of two alkali metals respectively;
wherein the alkali metal cations of the two alkali metals are potassium ions and lithium ions respectively, a molality of the potassium ions is not less than 30.6 mol/Kg, and a molality of the lithium ions is not less than 10.1 mol/Kg.
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