期刊
NANOTECHNOLOGY
卷 31, 期 27, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/ab851d
关键词
reduced graphene oxide; cation; dispersion performance; interface polarization; electromagnetic wave absorption
资金
- National Nature Science Foundation of China [21671057, U1704253, 51671171, 51811530103]
- Basic Grants for Central Universities [2018QNA4009]
- National Youth Thousand Talent Program of China, China Postdoctoral Science Foundation [2019M652524]
- Kaifeng Science and Technology Plan Project [1801005]
In this work, to maximize the unique attributes of reduced graphene oxide (RGO) for excellent microwave absorption, the ultralight RGO aerogels with improved dispersion and interface polarization performance were fabricated via a facile cation-assisted hydrothermal treatment process. The prepared RGO/paraffin composite exhibits excellent microwave absorption (MA) performance in a wideband frequency range of 8.0 similar to 18.0 GHz with an ultralow absorbent content of 0.5 wt.%. Such performance is comparable with most previously reported results on RGO-based composites but required much higher absorbent content. The mechanisms for the enhancement of polarization relaxation loss and conductive loss were investigated in detail. This study provides a promising and facile method for preparing RGO-based excellent microwave absorption materials with ultra-low filler content, which is significant for designing efficient MA absorbers.
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