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Ultralight three-dimensional polypyrrole/nano SiO2 aerogels have been synthesized through an in situ gelation process. These composites showed enhanced properties of electromagnetic absorption and can be easily to scale up. Only with a low filler loading, the maximum effective EMA bandwidth could reach 6.0 GHz when the thickness of absorber is 2.5 mm. This work provides a facile method to fabricate...
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