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The electrochemical properties of a Na2FeP2O7 positive electrode were investigated in the ionic liquid sodium bis(fluorosulfonyl)amide (NaFSA)–N-methyl-N-propylpyrrolidinium bis(fluorosulfonyl)amide (C3C1pyrrFSA). A stable charge–discharge behavior was obtained over the temperature range 253–363K. The cell offered nearly a one-electron theoretical capacity of about 90 mAh g−1 at 298–363K. The rate...
The electrochemical performance of a Na2FeP2O7 positive electrode has been evaluated in an inorganic ionic liquid NaFSA–KFSA (FSA = bis(fluorosulfonyl)amide) at 363 K. The electrode delivers a reversible capacity of 91 mAh g−1 with excellent rate capability (59 mAh g−1 at 2000 mA g−1) and a capacity retention of 91% over 1000 cycles, which facilitates the development of low-cost and high-safety sodium...
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