Key points are not available for this paper at this time.
The built-in electric field at the heterogeneous interface makes FeCoNi LDH in p–n heterojunction FeCoNi LDH/CuO more positively charged, which is more favorable for the adsorption of OH − , leading to the promoted OER activity in the alkaline media.
Ouyang et al. (Sat,) studied this question.