关键字：DOPED CARBON; EVOLUTION; OXIDE; ELECTROCATALYST; CATALYST

摘要：The developed strategies for synthesizing metal phosphides are usually cumbersome and pollute the environment. In this work, an ultrafast (30 s) quasi-solid-state microwave approach is developed to construct cobalt-molybdenum phosphide decorated with Ru (Ru/CoxP-MoP) featured porous morphology with interconnected channels. The specific nanostructure favors mass transport, such as electrolyte bubbles transfer and exposing rich active sites. Moreover, the coupling effects between metallic elements, especially the decorated Ru, also act as a pivotal role on enhancing the electrocatalytic performance. Benefiting from the effects of composition and specific nanostructure, the prepared Ru/CoxP-MoP exhibits efficient HER performance with a current density of 10 mA cm-2 achieved in 1 m KOH, 0.5 m H2SO4, seawater containing 1 m KOH and 1 m PBS, with overpotentials of 52, 59, 55, 90 mV, and coupling with good stability. This work opens a novel and fast avenue to design metal-phosphide-based nanomaterials in energy-conversion and storage fields. Spongy cobalt-molybdenum phosphide (Ru/CoxP-MoP) is synthesized by a simple and fast (30 s) quasi-solid-state microwave approach. The synthesized Ru/CoxP-MoP owns porous morphology and abundant interconnection channels. Overpotentials are as low as 52/55, 59, and 90 mV in alkaline freshwater/seawater, acidic, and neutral electrolytes are required to provide 10 mA cm & horbar;2 for HER. For overall water splitting in alkaline electrolytes, only 1.54 V is required to achieve 10 mA cm & horbar;2 with satisfactory stability. image

卷号：20

期号：47

是否译文：否