Highly stretchable carbon aerogels

Fan Guo, Yanqiu Jiang, Zhen Xu (), Youhua Xiao, Bo Fang, Yingjun Liu, Weiwei Gao, Pei Zhao, Hongtao Wang and Chao Gao ()
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Fan Guo: Zhejiang University
Yanqiu Jiang: Zhejiang University
Zhen Xu: Zhejiang University
Youhua Xiao: Zhejiang University
Bo Fang: Zhejiang University
Yingjun Liu: Zhejiang University
Weiwei Gao: Zhejiang University
Pei Zhao: Zhejiang University
Hongtao Wang: Zhejiang University
Chao Gao: Zhejiang University

Nature Communications, 2018, vol. 9, issue 1, 1-9

Abstract: Abstract Carbon aerogels demonstrate wide applications for their ultralow density, rich porosity, and multifunctionalities. Their compressive elasticity has been achieved by different carbons. However, reversibly high stretchability of neat carbon aerogels is still a great challenge owing to their extremely dilute brittle interconnections and poorly ductile cells. Here we report highly stretchable neat carbon aerogels with a retractable 200% elongation through hierarchical synergistic assembly. The hierarchical buckled structures and synergistic reinforcement between graphene and carbon nanotubes enable a temperature-invariable, recoverable stretching elasticity with small energy dissipation (~0.1, 100% strain) and high fatigue resistance more than 106 cycles. The ultralight carbon aerogels with both stretchability and compressibility were designed as strain sensors for logic identification of sophisticated shape conversions. Our methodology paves the way to highly stretchable carbon and neat inorganic materials with extensive applications in aerospace, smart robots, and wearable devices.

Date: 2018
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DOI: 10.1038/s41467-018-03268-y

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