Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 28, Issue 41, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201803938
Keywords
electromagnetic absorption; graphene; heterostructure; hollow core-shell; MXenes foam
Categories
Funding
- National Natural Science Foundation of China [51332004, 51521061, 51602258, 51725205]
- 111 Project [B08040]
Ask authors/readers for more resources
Electromagnetic wave (EM) absorption materials with broader effective absorption bandwidth (EAB), lightweight, and thinness characteristics are highly desirable in areas of wearable device and portable electronics. However, there are still many obstacles to simultaneously satisfy the above critical requirements required by new high-performance EM absorption materials. Herein, for the first time, Ti3C2TX MXenes are selected as the dielectric mediator to prepare reduced graphene oxide (RGO)/Ti3C2TX hybrids foam with hollow core-shell architectures and controllable complex permittivity via self-assembly and sacrificial template processes, under the guidance of theoretical calculations. RGO is grafted flatly on the outer surface of the Ti3C2TX spheres-core, forming a unique heterostructure. The RGO/Ti3C2TX foam possesses excellent EM absorption performance superior to all reported foam-based counterparts, the EAB covers the whole X-band at 3.2 mm while the density is merely 0.0033 g cm(-3), and its specific EM absorption performance (SMAP = RL (dB)/Thickness (cm)/Density (g cm(-3))) value exceeds 14 299.2 dB cm(-2) g(-1), verifying the above theoretical results. This study is expected to guide future exploration on designing high-performance EM absorption materials, and the RGO/Ti3C2TX foam can be promising candidates in energy storage, sensors, and wearable electronics fields.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available