Huang Zhang, Bingsheng Qin, Jin Han
Jun 29, 2018
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58
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Journal
ACS Energy Letters
Abstract
Here, we report an aqueous/nonaqueous hybrid electrolyte based on sodium trifluoromethanesulfonate with an expanded electrochemical window up to 2.8 V and high conductivity (∼25 mS cm–1 at 20 °C). The hybrid electrolyte inherits the safety characteristic of aqueous electrolytes and the electrochemical stability of nonaqueous systems, enabling stable and reversible operation of the Na3V2(PO4)3/NaTi2(PO4)3 sodium-ion battery.