Sample

ECSA/m²∙g⁻¹

Onset potential/V

∆E1/2/V

limited current

Pt/PCNFs

60

0.90

0.762

−5.446

Pt/PCNFs(CaCO₃ 0.5%)

63

0.89

0.730

−5.263

Pt/PCNFs(CaCO₃ 1%)

82

0.93

0.799

−5.633

Pt/PCNFs(CaCO₃ 2%)

28

0.88

0.717

−5.588

Pt/PCNFs(CaCO₃ 3%)

23

0.89

0.715

−4.587

JM20

77

0.91

0.773

−5.934