Superelastic Hard Carbon Nanofiber Aerogels

Superelastic carbon aerogels have been widely explored by graphitic carbons and soft carbons. These soft aerogels usually have delicate microstructures with good fatigue resistance but ultralow strength. Hard carbon aerogels show great advantages in mechanical strength and structural stability due t...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2019-06, Vol.31 (23), p.e1900651-n/a
Main Authors: Yu, Zhi‐Long, Qin, Bing, Ma, Zhi‐Yuan, Huang, Jin, Li, Si‐Cheng, Zhao, Hao‐Yu, Li, Han, Zhu, Yin‐Bo, Wu, Heng‐An, Yu, Shu‐Hong
Format: Article
Language:English
Subjects:
Aerogels
Carbon fibers
Conductors
Endurance
Fatigue strength
hard carbon aerogels
high strength
Materials science
Mechanical properties
Nanofibers
nanofibrous networks
Phenolic resins
piezoresistive sensors
Structural design
Structural stability
Superelasticity
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Summary:Superelastic carbon aerogels have been widely explored by graphitic carbons and soft carbons. These soft aerogels usually have delicate microstructures with good fatigue resistance but ultralow strength. Hard carbon aerogels show great advantages in mechanical strength and structural stability due to the sp3‐C‐induced turbostratic “house‐of‐cards” structure. However, it is still a challenge to fabricate superelastic hard carbon‐based aerogels. Through rational nanofibrous structural design, the traditional rigid phenolic resin can be converted into superelastic hard carbon aerogels. The hard carbon nanofibers and abundant welded junctions endow the hard carbon aerogels with robust and stable mechanical performance, including superelasticity, high strength, extremely fast recovery speed (860 mm s−1), low energy‐loss coefficient (
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201900651