Heat transfer principle of graphite energy storage materials

Can graphite composites be used in thermal energy storage?

Recently a comprehensive review was conducted on the use of graphite composites in thermal energy storage . The analysis included numerous carbon materials such as graphite (G), graphite foams (GF), graphite fibres (GF), expanded graphite (EG), graphite nanoplatelets (GNP), graphene (GRF) and carbon nanotubes (CNT).

Does graphite have a good heat dissipation performance?

On the one hand, the heat can transfer within three-dimensional space, which can help to optimize the heat transfer of the cross-plane direction of graphite. The k ⊥ and α ⊥ of the graphitized bulk (with the rolled-up graphene layers) are about 3.7 and 5.9 times higher than that of the HOPG, which leads to excellent heat dissipation performance.

Does graphite improve heat transfer in wood?

Zhong YJ, Guo QG, Li L, Wang XL, et al. Heat transfer improvement of Wood’s alloy using compressed expanded natural graphite for thermal energy storage. Sol Energ Mat Sol C 2012, 100: 263-267.

Can expanded graphite enhance the thermal conductivity of PCMS?

Various techniques have been introduced to enhance the thermal conductivity of PCMs. Expanded graphite (EG) is a common thermal enhancer because of its high thermal conductivity, low density, and chemical inertness. This paper provides a brief introduction of several common techniques for heat transfer enhancement and EG preparation.

What is the thermal conductivity of a graphite composite?

To validate this expectation, a composite was constructed using graphite sheets (GCS-017-G) with a thermal conductivity of 1750 W m −1 K. −1 obtained from RS Components (U.K.) and stearic acid (>97%) from Merck (UK). An image of the composite is shown in the inlay of Fig. 3.

Does graphite bulk have a 3D structure?

Conclusions In this work, graphite bulk (the graphitized bulk) with a 3D structure is prepared by rolling up the graphene layers to optimize heat transfer and improve mechanical properties. On the one hand, the heat can transfer within three-dimensional space, which can help to optimize the heat transfer of the cross-plane direction of graphite.