Influence of thermal treatment on the structure and electrical conductivity of thermally expanded graphite

0565206 - ÚSMH 2023 RIV NL eng J - Journal Article
Darabut, A.M. - Lobko, Y. - Yakovlev, Y. - Rodríguez, M.G. - Veltruská, K. - Šmíd, B. - Kúš, P. - Nováková, J. - Dopita, M. - Vorokhta, Maryna - Kopecký, V. - Procházka, M. - Matolínová, I. - Matolín, V.
Influence of thermal treatment on the structure and electrical conductivity of thermally expanded graphite.
Advanced Powder Technology. Roč. 33, č. 12 (2022), č. článku 103884. ISSN 0921-8831. E-ISSN 1568-5527
Institutional support: RVO:67985891
Keywords : Electrical conductivity * Ordered and porous structure * Thermal treatment * Thermally expanded graphite
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 5.2, year: 2022
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S0921883122004630?via%3Dihub

Thermally expanded graphite (TEG) is a promising filler beneficial to electrically conductive materials due to its high electrical conductivity, low density, and cost. In this work, the electrically conductive TEG was prepared by thermal treatment of the expandable graphite in the range of temperatures from 400 to 800 °C in air. Effects of the temperature treatment on the morphology and chemical structure of TEG were thoroughly characterized. Thermal treatment of the expandable graphite resulted in thermally expanded graphite formation with up to 6 times higher electrical conductivity than the precursor. Optimal conditions of thermal treatment were established at 600 °C providing material with the highest electrical conductivity, high expansion volume, and a well-ordered and defect-less structure.
Permanent Link: https://hdl.handle.net/11104/0336865