Metal–Organic Frameworks-Derived Co₂P@N-C@rGO with Dual Protection Layers for Improved Sodium Storage

Abstract

The Co₂P nanoparticles hybridized with unique N-doping carbon matrices have been successfully designed employing ZIF-67 as the precursor via a facile two-step procedure. The Co₂P nanostructures are shielded with reduced graphene oxide (rGO) to enhance electrical conductivity and mitigate volume expansion/shrinkage during sodium storage. As anode materials for sodium-ion batteries (SIBs), the novel architectures of Co₂P@N-C@rGO exhibited excellent sodium storage performance with a high reversible capacity of 225 mA h g^-1 at 50 mA g^-1 after 100 cycles. Our study demonstrates the significant potential of Co₂P@N-C@rGO as anode materials for SIBs.