A hierarchical carbon foam-hosted Co₂P nanoparticles monolithic electrode for ampere-level and super-durable electrocatalytic hydrogen production

Abstract

In this work, we develop a hierarchical carbon foam-based monolithic electrode (Co2P@HCF) from Co2+-adsorbed polyvinyl alcohol (PVA) sponge via the successive carbonization and phosphorization. Owing to the 3D hierarchical porous...

Transition Metal‐Cross‐Linked‐Starch Aerogel‐Derived Porous Carbon‐Based Monolithic Chainmail Electrodes for High‐Current‐Density and Durable Alkaline Water Splitting

“…32-0306), respectively, could be observed in the resulting Co 2 P@CSA electrode, which confirm the complete phosphorization conversion of metallic Co into Co 2 P. Noted that the diffraction peaks of Co 2 P phase in the Co 2 P@CSA electrode are more broadened and weaker than those of Co phase in the Co@CSA, indicating the smaller particle size and/or larger lattice strain of Co 2 P nanoparticles. [48,49] This might be due to the better dual-confinement effect of amorphous carbon shell and carbon matrix toward embedded Co 2 P nanoparticles. Additionally, the diffraction peaks of graphitic carbon phase can also be observed in the XRD pattern of Co 2 P@CSA electrode, revealing that the phosphorization reaction occurring on Co has no effect on the graphitization degree of porous carbon matrix, which would be beneficial for the electron transfer with low resistance.…”