Various sources such as https://news.ycombinator.com/item?id=7679154 speculate that graphene will combust at higher temperatures.
Is this true? Is the flash point/ temperature of combustion for graphene known?
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1$\begingroup$ Graphene is not a material at all, to begin with. $\endgroup$– Ivan NeretinJun 22, 2017 at 19:04
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1$\begingroup$ I would hardly consider that link a "source"... $\endgroup$– ZheJun 22, 2017 at 19:08
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3$\begingroup$ The Wikipedia article for graphene links to a Journal Phys. Chem abstract claiming that it combusts around 350 C. I have no access to the full article with the specific details. $\endgroup$– airhuffJun 22, 2017 at 19:15
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$\begingroup$ Graphene is a name for rather diverse materials (size, purity, concentration of defects etc can be different, occasionally stabilizers) so actual behavior may vary. $\endgroup$– GregJun 23, 2017 at 14:14
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3 Answers
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Graphene combusts at 620 K. See http://pubs.acs.org/doi/abs/10.1021/jp410044v.
It is postulated that it burns at this temperature "because of a large interlayer spacing of graphene sheets (i.e., 5.1 Å)".
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As @airhuff pointed out, the Wikipedia article of graphene says that graphene combusts at 350℃. This statement is taken from another link which states as to why graphene combusts:
it(graphene) has a high specific surface area of ca. 1168 m2 g–1 and starts to burn at 350 °C because of a large interlayer spacing of graphene sheets (i.e., 5.1 Å).
answered Jun 23, 2017 at 3:27
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Graphene is made from carbon atoms, just like diamond and graphite. Just like diamond and graphite, it will burn in oxygen.
