Modulation engineering of in situ cathodic activation of FeP based on W-incorporation for the hydrogen evolution reaction.

In situ electrochemical activation as a new pretreating method to adjust electrocatalytic performance attracts extensive attention. However, the activation mechanisms of electrocatalysts are still ambiguous. Herein, we propose a facile modulation strategy of in situ cathodic activation of FeP based on W-incorporation (W-FeP/IF) for the hydrogen evolution reaction (HER).