RT Journal Article
SR Electronic
T1 Compressed glassy carbon: An ultrastrong and elastic interpenetrating graphene network
JF Science Advances
JO Sci Adv
FD American Association for the Advancement of Science
SP e1603213
DO 10.1126/sciadv.1603213
VO 3
IS 6
A1 Hu, Meng
A1 He, Julong
A1 Zhao, Zhisheng
A1 Strobel, Timothy A.
A1 Hu, Wentao
A1 Yu, Dongli
A1 Sun, Hao
A1 Liu, Lingyu
A1 Li, Zihe
A1 Ma, Mengdong
A1 Kono, Yoshio
A1 Shu, Jinfu
A1 Mao, Ho-kwang
A1 Fei, Yingwei
A1 Shen, Guoyin
A1 Wang, Yanbin
A1 Juhl, Stephen J.
A1 Huang, Jian Yu
A1 Liu, Zhongyuan
A1 Xu, Bo
A1 Tian, Yongjun
YR 2017
UL http://advances.sciencemag.org/content/3/6/e1603213.abstract
AB Carbon’s unique ability to have both sp2 and sp3 bonding states gives rise to a range of physical attributes, including excellent mechanical and electrical properties. We show that a series of lightweight, ultrastrong, hard, elastic, and conductive carbons are recovered after compressing sp2-hybridized glassy carbon at various temperatures. Compression induces the local buckling of graphene sheets through sp3 nodes to form interpenetrating graphene networks with long-range disorder and short-range order on the nanometer scale. The compressed glassy carbons have extraordinary specific compressive strengths—more than two times that of commonly used ceramics—and simultaneously exhibit robust elastic recovery in response to local deformations. This type of carbon is an optimal ultralight, ultrastrong material for a wide range of multifunctional applications, and the synthesis methodology demonstrates potential to access entirely new metastable materials with exceptional properties.