Revisiting the Closed‐Pore Formation and Interfacial Micro‐Environment Modulation Mechanisms of Polyacrylonitrile‐Derived Carbon Nanofibers Toward Efficient Sodium Storage
Polyacrylonitrile‐based carbon nanofibers (CNFs) are widely regarded as promising sodium‐storage anodes owing to their high carbon yield/axial conductivity and superior mechanical flexibility. Nevertheless, the ambiguous understandings into the temperature‐dependent micro‐structure evolution, particularly the closed‐...