I measured GCD curve of CNT + Si composite film as a anode electrode for LIB in 1M LiPF6, EC + DEC ( 1:1 Vol), FEC (5wt%) electrolyte.

Compostie film contains 90wt% of Si nanoparticle(SiNP) and SiNP was well dispersed in DWCNT film.

The experiment was conducted with cycling rates of 0.05C for the first two cycles and then 0.5C for subsequent cycles. The graph provided corresponds to the first cycle (#1), the fourth cycle (#2), and the ninth cycle (#3). Voltage fluctuations were observed starting from the third cycle, and these fluctuations were not consistent. Is it possible to analyze the cause of this issue?

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