A Polyoxometalate-Based Metal-Organic Framework-Derived FeP/MoP Hybrid Encapsulated in N/P Dual-Doped Carbon as Efficient Electrocatalyst for Hydrogen Evolution

摘要

The design and fabrication of noble-free metal electrocatalysts for efficient hydrogen production with long-term stability are of great significance, but very challenging. Herein, for the first time, we report an iron phosphide/molybdenum phosphide hybrid covered by nitrogen/phosphorus dual-doped carbon (FeP/MoP@NPC) using polyoxometalate-based metal-organic frameworksas templates by a facile two-step approach. As expected, the composite shows highly efficient electrocatalytic performance toward the hydrogen evolution reaction with a low onset overpotential (76 mV), small Tafel slope (56.5 mV dec(-1)), and excellent catalytic stability for 10 h owing to its distinct nanostructure and strong synergistic effect of FeP and MoP. More importantly, this work offers a novel methodology for exploiting transitionmetal-based electrocatalysts for clean and renewable energy technology.