Catalyst

Potential/V (vs. RHE)

Y_NH3/μg·h⁻¹·cm⁻²

FE%

Ref.

NiO/TM

−0.6

2130

90

[24]

Fe₂O₃ nanorods

78.02 μmol·h⁻¹·cm⁻²

86.73

[25]

TiO_2−x/TP

−0.4

1233.2

92.5

[26]

MnO_2−x NA/TM

−0.7

27.51 × 10⁻¹⁰ mol·s⁻¹·cm⁻²

82.8

[27]