Sugar blower protocol enabling superior electromagnetic wave absorption of porous micro pipeline carbon materials

Carbon-based materials are the most widely used electromagnetic wave absorbing (EWA) material in the aerospace field because of their light weight. However, carbon materials suffer from poor impedance matching, which hinders their practical applications. Here, inspired by the dredging strategy from Chinese historical allusion “King Yu Tamed the Flood”, a sugar blower synthesis protocol is proposed to guide and transmit electromagnetic wave, and then dissipate them step by step. Porous micro pipeline carbon (PMPC) and sugar blower synthesis protocol are purposely designed and put into practice. The achieved superior EWA performance of PMPC verified the effectiveness of the dredging strategy. Moreover, the key factors of the PMPC are revealed to be the special pore configuration (surface holes and the internal drainage channels). By systematically analyzing, it can be concluded that the sugar blower synthesis protocol can simply and effectively improve the impedance mismatching problem of pure carbon materials, and thus provide a new pathway for the development of ultralight and ultrastrong EWA materials. Moreover, given the unique pore configuration and transport characteristics, PMPC will have wide application prospects in the fields of renewable energy, stealth technique, heat insulation and gas-phase or liquid-phase reactors. Noteworthily, the newly developed sugar blower synthesis protocol for PMPC is simple, efficient, pore structure controllable and industrialized, providing a paradigm shift for some other porous pipeline architectures.