High-temperature fire resistance and self-extinguishing behavior of cellular graphene

0566245 - FZÚ 2023 RIV US eng J - Journal Article
Šilhavík, Martin - Kumar, Prabhat - Zafar, Zahid Ali - Král, Robert - Zemenová, Petra - Falvey, Alexandra - Jiříček, Petr - Houdková, Jana - Červenka, Jiří
High-temperature fire resistance and self-extinguishing behavior of cellular graphene.
ACS Nano. Roč. 16, č. 11 (2022), s. 19403-19411. ISSN 1936-0851. E-ISSN 1936-086X
R&D Projects: GA MŠMT EF16_026/0008382; GA MŠMT(CZ) EF16_019/0000760
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : graphene * fire * high-temperature * flame retardant * self-extinguishing * cellular * defects
OECD category: Nano-materials (production and properties)
Impact factor: 17.1, year: 2022
Method of publishing: Limited access
https://doi.org/10.1021/acsnano.2c09076

The ability to protect materials from fire is vital to many industrial applications and life safety systems. In this study, we demonstrate that a simple change of the microstructure can significantly boost the fire resistance of an atomically thin material well above its oxidation stability temperature. We show that free-standing graphene layers arranged in a 3D cellular network exhibit completely different flammability and combustion rates from a graphene layer placed on a substrate. Covalently cross-linked cellular graphene aerogels can resist flames in air up to 1500 °C for a minute without degrading their structure or properties. Raman spectroscopy, XPS, and thermogravimetric studies reveal that the exceptional fire-retardant and self-extinguishing properties of cellular graphene originate from the ability to prevent carbonyl defect formation and capture nonflammable carbon dioxide gas in the pores.
Permanent Link: https://hdl.handle.net/11104/0338282