Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1446081 | Acta Materialia | 2013 | 8 Pages |
Abstract
Here we show that the graphene sheets in reduced graphene oxide papers (rGOPs) can be cross-linked by electron-irradiation-induced sp3 carbon atoms, resulting in significant enhancements in both the mechanical and electrical properties compared to unirradiated rGOPs. We find that the residual oxygen-containing functional groups in rGOPs are removed during irradiation. We also observe that the Wigner energy release temperature in rGOPs is 102–188 °C, which is lower than that (∼200 °C) in pure graphite. The mechanisms to form sp3 cross-links and the evolutions of sp3 carbon atoms under irradiation are revealed through molecular dynamics simulations.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Enze Jin, Jianying He, Kaixuan Sheng, Zhiliang Zhang, Gaoquan Shi, Quanshui Zheng,