{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Wang Z"],"funding":["National Natural Science Foundation of China","Guangdong Province Introduction of Innovative R&amp;D Team","National Key Research and Development Program of China"],"pagination":["7055-7062"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC9977443"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["13(11)"],"pubmed_abstract":["High-performance polyimide-based porous carbon/crystalline composite absorbers (PIC/rGO and PIC/CNT) were prepared by vacuum freeze-drying and high-temperature pyrolysis. The excellent heat resistance of polyimides (PIs) ensured the integrity of their pore structure during high-temperature pyrolysis. The complete porous structure improves the interfacial polarization and impedance-matching conditions. Furthermore, adding appropriate rGO or CNT can improve the dielectric losses and obtain good impedance-matching conditions. The stable porous structure and strong dielectric loss enable fast attenuation of electromagnetic waves (EMWs) inside PIC/rGO and PIC/CNT. The minimum reflection loss (RL<sub>min</sub>) for PIC/rGO is -57.22 dB at 4.36 mm thickness. The effective absorption bandwidth (EA"],"journal":["RSC advances"],"pubmed_title":["Polyimide aerogel-derived amorphous porous carbon/crystalline carbon composites for high-performance microwave absorption."],"pmcid":["PMC9977443"],"funding_grant_id":["2016ZT06C412","U20A20340","2020YFB0408100"],"pubmed_authors":["Fang J","Min Y","Lu X","Wang B","Huang W","Yu W","Wang Z"],"additional_accession":[]},"is_claimable":false,"name":"Polyimide aerogel-derived amorphous porous carbon/crystalline carbon composites for high-performance microwave absorption.","description":"High-performance polyimide-based porous carbon/crystalline composite absorbers (PIC/rGO and PIC/CNT) were prepared by vacuum freeze-drying and high-temperature pyrolysis. The excellent heat resistance of polyimides (PIs) ensured the integrity of their pore structure during high-temperature pyrolysis. The complete porous structure improves the interfacial polarization and impedance-matching conditions. Furthermore, adding appropriate rGO or CNT can improve the dielectric losses and obtain good impedance-matching conditions. The stable porous structure and strong dielectric loss enable fast attenuation of electromagnetic waves (EMWs) inside PIC/rGO and PIC/CNT. The minimum reflection loss (RL<sub>min</sub>) for PIC/rGO is -57.22 dB at 4.36 mm thickness. The effective absorption bandwidth (EA","dates":{"release":"2023-01-01T00:00:00Z","publication":"2023 Mar","modification":"2026-03-17T16:00:07.359Z","creation":"2025-02-18T23:35:27.377Z"},"accession":"S-EPMC9977443","cross_references":{"pubmed":["36875881"],"doi":["10.1039/d3ra00155e"]}}