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. 2020 Dec 17;176:112912. doi: 10.1016/j.bios.2020.112912

Fig. 2.

Fig. 2

(A) SEM images of the bare paper (i), the GO modified paper (ii), and its corresponding cross-sectional image (iii). Characterization results of each fabrication step using the EIS (B) and CV (C) techniques. Note that all EIS Nyquist plots were fitted with the Randles equivalent circuit.