Abstract
Despite the reported enhanced electrochemical behavior of graphite anodes due to the addition of NaClO4 salts in to the electrolytes used in lithium battery applications, a detailed investigation upon the effect of addition of NaPF6 salt in an electrolyte containing 1 M LiPF6 in 1:1 V/V EC:DEC has resulted in inferior electrochemical behavior of graphite, i.e., quite contrast to the reported behavior of improved effects of addition of NaClO4 into 1 M LiClO4 solution, the addition of 0.22 mol dm−3 NaPF6 salt has been found to reduce the capacities of lithium-ion cells containing 1 M LiPF6 in 1:1 V/V EC:DEC. Towards this study, cells fabricated with and without the addition of 0.22 mol dm−3 NaPF6 in 1 M LiPF6 (1:1 V/V EC:DEC) were subjected to a systematic charging at a constant C/10 rate and discharging of cells at four different rates, viz., C/5, C/2 and C rates at the end of every 5 cycles. The observed results of the charge-discharge studies up to 15 cycles are discussed in this preliminary communication.
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Park, CW., Kalaiselvi, N., Doh, CH. et al. Effect of sodium salt addition upon electrochemical behavior of natural graphite. Ionics 11, 248–250 (2005). https://doi.org/10.1007/BF02430384
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DOI: https://doi.org/10.1007/BF02430384