Table 2. Values of the equivalent circuit components data of GeO₂–Ge and GeO₂–Ge@NCNT.

Samples	Before cycling			After 10 cycles
	R s (Ω)	R SEI (Ω)	R ct (Ω)	R s (Ω)	R SEI (Ω)	R ct (Ω)
GeO2–Ge	12	124	215	5.6	4.8	5.3
GeO2–Ge@NCNT	9.8	47.2	200	4	1.5	3.5