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The electrochemical manner of hexafluorophosphate anion into a graphite electrode has been studied in mixed solvents of propylene carbonate (PC) and ethylmethyl carbonate (EMC). The successful electrochemical intercalation of PF 6 − has been gained in PC/EMC-based electrolyte solutions and the effect of PC and EMC on PF 6 − insertion into graphite in these electrolyte solutions has been studied by electrochemical tests, ex situ XRD and in situ Raman. Moreover, the interaction between anions and solvents in electrolyte solutions was investigated by nuclear magnetic resonance. Furthermore, Li/graphite cells based on these solutions cycled well.
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Fan et al. (2017) studied this question.
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