Preparation and thermal properties of expanded graphite/paraffin/organic montmorillonite composite phase change material

Carbon nanotube/paraffin/montmorillonite composite phase change material for thermal energy storage

“…(2) (Kao et al, 2012):$\mathrm{normal\Delta }{H}_{\mathrm{italicCPCM}}=\mathrm{normal\Delta }{H}_{\mathrm{italicPCM}}·\eta$where Δ H CPCM is the latent heat of the composite PCM, Δ H PCM is the latent heat of paraffin, and η is the mass fraction of paraffin in the composite PCM.…”

“…Na-montmorillonite (Na-MMT, Zhejiang Fenghong New Material Co.) with purity >88% and CEC: 85 meq/100 g was selected for the experiments. The organic montmorillonite (OMMT) was home-made with Cetyl trimethyl ammonium bromide ( Kao et al, 2012 ). Paraffin with a phase transition temperature of 26 °C (Shijiazhuang Caldecott Phase Change Materials Co., Ltd) and cetyl trimethyl ammonium bromide (CATB, Chengdu Kelong Chemical Reagent Factory, AR) were acquired from commercial sources.…”

Nanoconfinement of phase change materials within carbon aerogels: phase transition behaviours and photo-to-thermal energy storage

“…1,3-6 Phase change materials can store a large amount of energy at a constant temperature. 8,[15][16][17][18][19][20][21][22][23][24][25][26][27] Furthermore, the volume changes of organic PCMs are subtle when the phase change occurs, which causes less fracture to the container. 5,7,[10][11][12][13][14] Among the large number of phase change materials, organic PCMs have been thoroughly investigated for their large range of practical melting points and a moderate thermal storage density.…”

“…5,7,[10][11][12][13][14] Among the large number of phase change materials, organic PCMs have been thoroughly investigated for their large range of practical melting points and a moderate thermal storage density. 8,[15][16][17][18][19][20][21][22][23][24][25][26][27] Furthermore, the volume changes of organic PCMs are subtle when the phase change occurs, which causes less fracture to the container. However, one factor hindering organic PCMs from practical application is the leakage of liquid-state PCMs.…”

Clay Composites for Thermal Energy Storage: A Review

“…Although PCM/MMT composites generally have better thermal conductivity than pure PCMs, some research was devoted to the preparation of PCM/MMT materials with further improved thermal conductivity by the inclusion of carbon nanostructures or metal nanoparticles. For instance, Kao et al reported on the preparation of extended graphite (EG)/paraffin/MMT composite by molten intercalation [65]. The EG is known to have a pore structure with extended specific surface area and high thermal conductivity.…”