Nickel foam encapsulated phase change composites with outstanding electromagnetic interference shielding and thermal management capability

Deficiencies in the adaptability and versatility of a phase change composite severely restrict its promotion and application in fields with complex operational environments. Herein, a series of nickel foam adsorbed paraffin wax (Ni-F/PW) composites were obtained via a vacuum impregnation process. Multi-walled MXene films were also obtained using a vacuum filtration process. Sandwich structured phase change composites (SSPCCs) were obtained through a facile solution encapsulation process, using polydimethylsiloxane. Among them, SSPCC-25 demonstrates a total shielding effectiveness value of 88.2 dB with a thickness of 25 mu m. Additionally, high latent heat (170 J/g) and great thermal stability provide SSPCCs with excellent thermal management application potential. The proven excellent photo-to-thermal and magnetic-to-thermal conversion abilities further widen the range of applications for SSPCCs. In short, the fabricated SSPCCs are an excellent candidate as a functional material in the fields of electromagnetic interference shielding and temperature management.

Automated summary

Sandwich structured phase change composites (SSPCCs) with high shielding effectiveness and thermal management potential were successfully fabricated using vacuum impregnation and solution encapsulation processes.