Engineering the Perfect Void: The Role of Hard Carbon Microstructure in Sodium-Ion Performance
Introduction: The Great Sodium Pivot of 2026 As the global energy sector seeks a decisive alternative to the increasingly volatile and geographically concentrated lithium markets, Sodium-Ion Batteries (SIBs) have officially emerged as the most viable successor for mid-range electric vehicles (EVs) and massive stationary grid storage. However, the transition from Lithium to Sodium is not a simple "plug-and-play" swap of elements.