期刊
SCIENCE ADVANCES
卷 3, 期 6, 页码 -出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.1603213
关键词
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资金
- National Natural Science Foundation of China [51672238, 51421091, 51525205, 51332005, 51272227]
- National Basic Research Program of China [2011CB808205]
- NSF for Distinguished Young Scholars of Hebei Province of China [E2014203150]
- Postgraduate Innovation Project of Hebei Province of China [00302-6370007]
- Defense Advanced Research Projects Agency [W31P4Q-13-1-0005]
- U.S. Department of Energy (DOE), Office of Science [DE-SC0001057]
- NSF [EAR-0968456, 1214376, 1361276]
- DOE-NNSA [DE-NA0001974]
- DOE-BES [DE-FG02-99ER45775, DE-AC02-06CH11357]
- NSF
- Division Of Earth Sciences
- Directorate For Geosciences [1361327] Funding Source: National Science Foundation
Carbon's unique ability to have both sp(2) and sp(3) 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 sp(2)-hybridized glassy carbon at various temperatures. Compression induces the local buckling of graphene sheets through sp(3) 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.
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