Coupling Atomic‐Level Defect Engineering With Meta‐Structure Design in Ordered Mesoporous Carbon for Ultra‐Broadband Microwave Absorption

ABSTRACT Achieving scalable dielectric absorbers with ultra‐broadband performance remains challenging due to the intrinsic trade‐off between dielectric attenuation and impedance matching. Here, we report oxygen‐doped and vacancy‐engineered ordered mesoporous carbon (OOMC) prepared via a facile and scalable thermal oxidation strategy using commercially available polystyrene‐block‐poly(ethylene‐ran‐butylene)‐block‐polystyrene as the precursor. The ordered mesoporous structure enables uniform oxyge