Abstract
The development of high-performance nonprecious electrocatalysts toward both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is of great significance for overall water splitting but remains a grand challenge. In this study, Co phosphate (CP) nanoparticles encapsulated in three-dimensional porous N,P-codoped carbon networks (NPC) were fabricated by direct growth on carbon cloth (CC), which were further used as an integrated three-dimensional (3D) electrode for cost-effective and energy efficient HER and OER both in acid and alkaline medium. Impressively, the as-obtained flexible integrated electrode exhibited excellent activities and robust stability, due to the unique 3D architecture with improved electron transport capability, high number of active sites, and channels for reactant/product transfer. Our experimental results show significantly enhanced performance for such engineered nanostructures due to the synergistic effect from nanoparticles encapsulation and nitrogen and phospho...
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