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. 2021 Mar 30;6(14):9471–9481. doi: 10.1021/acsomega.0c06167

Table 1. Z Fit Analysis of the Nyquist Plot.

  equivalent circuit: R1 + C1/R2 + Q3
parameter Cu2FeSnS4 Cu2FeSnS4/PVP Cu2FeSnS4/PVP/rGO unit
R1 = Rs 0.9016 0.8728 0.6237 Ohm
C1 0.0294 0.4135 × 10–3 2.021 × 10–3 F
R2 = Rct 2.16 2.73 3.77 Ohm
Q3 0.0408 0.047 0.02633 F·s(a–1)
a3 0.4447 0.486 0.5313