LAUSR

Constructing composite structures is an essential approach for obtaining the multiple functionalities in single entity. A vailable synthesis methods of the composites need to be urgently exploited; especially in-situ construction. Here; we report a NiS/NiFe2 O4 composite through a local coordination metal-S at the interface; derived from phase reconstruction in a highly defective matrix. X-ray absorption fine structure confirmed that long-range order was broken via the local metal-S coordination; and by using the electron energy loss spectroscopy we identified the introduction of NiS/NiFe2 O4 interfaces during the irradiation of plasma energy. Density functional theory calculations revealed that in-situ phase reconfiguration is crucial for synergistically reducing energetic barriers and accelerating reaction kinetics towards catalyzing the oxygen evolution. As a result; it leads to an overpotential of 230 mV @10 mA·cm-2 for OER and half-wave potential of 0.81V for ORR; as well as an excellent Zinc-air batteries performance with a power density of 148.5 mW·cm-2 . Our work provides a new compositing strategy in terms of fast phase reconstruction of bifunctional catalyst. This article is protected by copyright. All rights reserved.