期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 3, 期 45, 页码 11893-11901出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5tc03127c
关键词
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资金
- Natural Science Foundation in China [NSFC 11272109]
- PhD Programs Foundation of Ministry of Education of China [20122302110065]
Assembling graphene nanosheets into three dimensional aerogels has attracted considerable interest due to their unique properties and potential applications in many fields. Here, graphene aerogels constructed from interconnected graphene nanosheet-coated carbon fibers are fabricated by using cigarette filters as templates via a simple dip-coating method. The composite aerogels are ultralight (rho = 7.6 mg cm (3)) yet have high mechanical strength (0.07 MPa); when used as electromagnetic wave absorbers, they showed a minimum reflection loss value of -30.53 dB at 14.6 GHz and the bandwidth of reflection loss less than -10 dB (90% absorption) was 4.1 GHz. Furthermore, coating polypyrrole onto the composite aerogels can increase the minimum reflection loss value to -45.12 dB. Our results provide a promising approach to fabricate graphene-based composite aerogels with a strong electromagnetic wave absorption ability.
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