Ultrafine ZnSe Encapsulated in Nitrogen-Doped Porous Carbon Nanofibers for Superior Na-Ion Batteries with a Long Lifespan and Low-Temperature Performance

The inferior cycle lifespan and unsatisfactory energy density of traditional anode materials for sodium-ion batteries need to be improved toward actual application. Here, MOF-derived ultrafine ZnSe nanoparticles encapsulated within nitrogen-doped porous carbon nanofiber composites (ZnSe@NCNFs) are fabricated via in situ pyrolysis and selenylation from electrospun PAN@ZIF-8 nanofibers. As an anode, the ZnSe@NCNF electrode displays outstanding...