Mechanically Adaptive Dense Multiscale Silicon‐Carbon Architectures for Stable High‐Capacity Lithium‐Ion Batteries

Achieving high-energy-density lithium-ion batteries (LIBs) requires silicon (Si) anodes that can operate reliably under the high compaction densities demanded by practical cells. However, severe volume fluctuations and unstable interfacial chemistry continue to induce mechanical failure and rapid performance decay. Here, we introduce a hierarchically engineered composite anode (NSi₅₀/PSi@C) that integrates a porous silicon scaffold, infiltrated nano-silicon (NSi), and a conformal carb