Atomically Dispersed Co–P Moieties via Direct Thermal Exfoliation for Alkaline Hydrogen Electrosynthesis

The development of highly active and stable cathodes in alkaline solutions is crucial for promoting the commercialization of anion exchange membrane (AEM) electrolyzers, yet it remains a significant challenge. Herein, we synthesized atomically dispersed CoP4 moieties (CoP4–SSC) immobilized on ultrathin carbon nanosheets via a phosphidation exfoliation strategy at medium temperature. The thermodynamic formation process of the Co–P moieties was elucidated using X-ray absorption spectroscopy (XAS) and theoretical calculations. Remarkably, the resulting CoP4–SSC electrocatalyst exhibited outstanding activity for alkaline hydrogen evolution, with a low overpotential of 52 mV at 10 mA cm–2 and a turnover frequency…

• NN
  National Natural Science Foundation of China

  Award: 22373027
• DO
  Department of Science and Technology of Sichuan Province

  Award: 2024YFHZ0306