Journal
CARBON
Volume 124, Issue -, Pages 492-498Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2017.07.088
Keywords
Wood; Biomass carbon; Aligned channels; Microwave absorption
Funding
- National Natural Science Foundation of China [21325417, 51533008, 51603183]
- National Key R&D Program of China [2016YFA0200200]
- Fundamental Research Funds for the Central Universities [2017QNA4036, 2017XZZX008-006]
- National Postdoctoral Program for Innovative Talents [BX201700209]
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Microwave absorption (MA) materials have gained wide range of applications including satellite communications, radar detections, etc. Here, for the first time we designed high-performance porous biomass-pyrolized carbon (PBPC) based on natural wood. The PBPC with orderly parallel channel structure is on the top among all MA materials, showing excellent MA performance with maximum reflection loss (RL) of -68.3 dB and absorption bandwidth (RL <= -10 dB) up to 7.63 GHz. Furthermore, we predict the reflection loss by calculation and point out regulation of electrical conductivity would maximize MA performance. The combination of renewability, easy mass production and simple fabrication provides PBPC practical application value, and the strategy of channel structure design followed by permittivity adjustment casts a light for accessing new high-performance MA materials. (C) 2017 Elsevier Ltd. All rights reserved.
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