Natural Pitch‐Derived Carbon Networks Induced Lattice Strain Engineering in Nickel‐Based Heterostructures Enables Efficient Anodes for Sodium‐Ion Batteries

The development of high-performance sodium-ion batteries (SIBs) relies on enhancing the electrochemical properties of the electrodes, particularly the transition metal compounds (TMCs) through effective carbon coatings. Herein, a straightforward approach using polymerized natural pitch-derived carbon (PNPC) via step-growth polymerization regulates the lattice strain in Ni