期刊
ENERGY
卷 144, 期 -, 页码 669-678出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2017.12.062
关键词
Graphene; Flash light; High temperature; Nanostructure; Harsh environment
资金
- National Natural Science Foundation of China [51576100, 51676109, 51472122]
- Jiangsu Provincial Project of Six Talent Summit [2014-XNY-002]
Graphene has been subjected to widespread attention, and its highly extraordinary properties have led to abundant scientific researches. The present study shows that fluffy graphene can ignite in a fairly short time upon exposure to a conventional flash light, even in an extremely low temperature environment. The ignition process is fierce and multi-points are distributed with temperatures as high as 1840K with few residues. This kind of ignition can be attributed to the graphene nanostructure efficiently converting light to heat and causing a large amount of heat to accumulate within a very short flash time with the temperature quickly exceeding the ignition point. It is further demonstrated that graphene can ignite in an environment as low as about -50 degrees C. When fluffy graphene was added to extremely lean methane/oxygen/nitrogen mixtures, ignition of the mixtures was successfully triggered by flash light. The ignition characteristics make graphene a promising alternative for ignition fields in harsh environment. (C) 2017 Elsevier Ltd. All rights reserved.
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