Triggering electronic microenvironment of extraordinary nitrogen-bridged atomic iron coordinated with in-plane nitrogen by manipulating phase-reconfigured 2D vanadium nitride MXene toward invigorated lithium-sulfur batteries

The electronic microenvironment of isolated Fe in Fe N4-O-NC -VN was modulated by axial-bridged nitrogen-doped carbon for bidirectional lithium–sulfur batteries.