Abstract
The development of multifunctional materials to eliminate electromagnetic wave interference (EMI) and achieve multi-source driven thermal management for electronic devices has become a consensus. In this work, biomass-based carbon aerogels (LG) were prepared and used as porous supporting material to encapsulate magnetic Fe3O4@polyethylene glycol (Fe3O4@PEG) by vacuum impregnation. Form-stable LG-based phase change composites (LGP) were obtained, which had excellent thermal storage capability and satisfactory EMI shielding effectiveness (SE). With the supporting and bridging effects of GO, LGP-3–0 % has a high latent heat enthalpy of 156.32 J/g and excellent electrical conductivity of 281.1 S/m. With addition of 7 wt% Fe3O4, LGP-3–7 % achieves satisfactory EMI SE of 53.83 dB. Furthermore, LGP-3–7 % exhibits an outstanding performance of multi-source driven thermal management, including light-to-thermal, magnetic-to-thermal, and electro-to-thermal conversion. In short, LGP show the wide application prospects for electronic device to avoid EMI and achieve thermal management.
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