▎ 摘　　要

A 3D yolk-shell-like electrode material composed of a porous interconnected graphene network and embedded Ni2P nanoparticles is designed and fabricated by an assembly and self-template strategy. This novel nanoarchitecture integrates the advantages of nano-structure and microstructure, and provides highly efficient and stable electrochemical circuits involving the active nano-particles, leading to excellent electrochemical performance in terms of reversibility, rate capability, and cycle stability.