Hierarchical Hollow Nanotubes of NiFeV-Layered Double Hydroxides@CoVP Heterostructures towards Efficient, pH-Universal Electrocatalytical Nitrogen Reduction Reaction to Ammonia

•Novel hollow hierarchical nanotubes (HHNTs) of CoVP@NiFeV-layered double hydroxides heterostructure is synthesized.•Hierarchical hollow nanotubes micro/nanostructures increase the electrochemical active surface area and active sites.•The strong chemical interaction between NiFeV-LDHs and CoVP plays a key role in the electrochemical activities.•The HHNTs heterostructures show great catalytic activity towards high Faradaic efficiency, pH-universal NRR to NH3 synthesis.