Table 2.

Main characteristics of graphene nanoplatelets (GNPs).

Parameter	Value
Carbon content	>97% wt.%
Oxygen content	<0.6 wt.%
Sulphur content	<0.2 wt.%
Apparent density	60 g/L
pH	5–7
Lateral dimension	<10–15 μm
Thickness	<2–3 nm