Why is graphite heated at a high-temperature reactor?

heated in a high-temperature reactor to achieve the thermally expanded graphite. When the sample is treated at >600 C, the expansion of graphite layers takes place due to gaseous prod-ucts formed by the decomposition of H2SO4 or HNO3, which helped to separate the adjacent graphite layers.

Why do graphene AKES expand?

This was due to the fast escape of the gas molecules (CO2, SO2, and H2O) and they failed to create the required pressure to expand the adjacent graphene layers.89 In the case of larger akes, gas molecules could help to expand the layers away from each other. Similarly, the thicker akes can expand

Does graphite flake size affect the expansion ratio of Teg?

They found that the graphite flake size had an effect on the expansion ratio of TEG. For example, when graphite flakes with a +325 mesh (>44 μm) size range were used to prepare TEG, they obtained a low intercalation rate because of the small size of the flakes which led to a poor expansion ratio.

What is thermally expanded graphite?

Thermally expanded graphite (TEG) is a vermicular-structured carbon material that can be prepared by heating expandable graphite up to 1150 °C using a muffle or tubular furnace.

What happens when a graphite sample is treated at 600 °C?

When the sample is treated at >600 °C, the expansion of graphite layers takes place due to gaseous products formed by the decomposition of H2SO4 or HNO3, which helped to separate the adjacent graphite layers.

Can Teg-based composites be used in energy storage?

In this review, we have highlighted and summarized the recent developments in TEG-based composites and their potential applications in energy storage, fuel cells and sensors with hand-picked examples. Brahmari H. Shetty is currently pursuing her PhD in the Depart-ment of Physics at SRM Institute of Science and Technology.