Highly efficient, stable and cost-efficient electrocatalysts for hydrogen generation via water splitting have become in increasing demand for future energy systems. Hitherto, P-rich noble metal polyphosphides which can decrease noble metal (such as Rh, Pd, or Ir) dosage are important to probe potential high-performance HER electrocatalysts. Nevertheless, they are difficult to synthesize at ambient pressure and moderate temperatures. Herein, for the first time, we report a novel iridium diphosphide (IrP2) electrocatalyst embedded within an ultra...
