A Facile Method to Construct Graphene Oxide–Based Magnesium Hydroxide for Chemical Heat Storage

ABSTRACT

Mg(OH)₂ nanoparticles anchored on graphene oxide (GO) were facilely prepared by a hydrothermal method. The main diameter scale of nanoparticles on the graphene sheet was about 25–50 nm shown by transmission electron microscopy characterization results. X-ray diffraction results indicated that the nanoparticles are in accordance with the data on magnesium hydroxide. This material exhibited significantly improved heat storage capacity and a higher hydration rate than pure magnesium oxide, and the introduction of GO leads to greatly increased thermal conductivity of the nanocomposites. As a novel thermochemical heat storage material, Mg(OH)₂/GO has huge potential for high-efficiency energy systems.

KEYWORDS:

• Nanoparticles
• energy storage and conversion
• magnesium hydroxide
• graphene oxide

Funding

This work was supported by the National Science Foundation of China (No. 51406209, 51541609).

Additional information

Funding

This work was supported by the National Science Foundation of China (No. 51406209, 51541609).