关键字：N dopantsPhase transitionReaction kineticsOverall water splitting
摘要：Developing a simple and effective strategy to optimize the structure of phosphide to stimulate its industrial-scale current density for water decomposition is a great challenge. In this work, the 'phosphorization-quenching ammonia treatment' strategy was innovatively proposed to prompt N-doping and the phase transition of phosphide, thereby constructing the unique N-FeNiP/NF-T electrode. As anticipated, the well-designed N-FeNiP/NF-T obtained an industrial current density of 1 A cm-2 at only 282 mV for HER and 307 mV for OER, which is 0.90fold of Pt/C and 0.52-fold of RuO2, respectively. Notably, the density functional theory calculation revealed that the N dopants further optimized the reaction kinetics of the N-Ni2P/NiP2 heterostructure with high OER activity and the N-NiP2 phase with high HER activity, leading to the maximization of the synergistic effect. Overall, this work provides a novel strategy to induce phase transition to construct efficient heterostructure electrodes with optimal reaction kinetics.
卷号：133
期号：无
是否译文：否