Fast Charging of a Thermal Accumulator Based on Paraffin with the Addition of 0.3 wt. % rGO

The composite of paraffin with reduced graphene oxide (paraffin/rGO) was obtained at 70 ? by the mechanical mixing of the components followed by ultrasonic dispersion. The introduction of only 0.3 wt.% rGO stained the paraffin black. It has been shown that thermal batteries made from 160 grams of pure paraffin and 160 grams of the composite are equally slow at charging when placed in boiling water. However, two minutes of microwave heating increases the temperature of the pure paraffin battery to only 32 ?, while the temperature of the paraffin/rGO composite battery rises to 74 ?, which is above the paraffin solid-liquid phase transition temperature.

Automated summary

The composite of paraffin with reduced graphene oxide (paraffin/rGO) was obtained by mechanical mixing and ultrasonic dispersion at 70℃. The introduction of only 0.3 wt.% rGO stained the paraffin black. Thermal batteries made from 160 grams of pure paraffin and 160 grams of the composite exhibited equal charging speed when placed in boiling water. However, two minutes of microwave heating resulted in a temperature increase to only 32℃ for the pure paraffin battery, while the paraffin/rGO composite battery reached a temperature of 74℃, above the paraffin solid-liquid phase transition temperature.