Photothermal lava energy storage

What is photothermal phase change energy storage?

To meet the demands of the global energy transition, photothermal phase change energy storage materials have emerged as an innovative solution. These materials, utilizing various photothermal conversion carriers, can passively store energy and respond to changes in light exposure, thereby enhancing the efficiency of energy systems.

What is photothermal energy storage structure (PESS)?

It consisted of inner multi-scale pyramidal photothermal structures with microscale gradient porous copper foams, CuS nanowires and reduced graphene oxide (rGO) composite materials, and outer photothermal energy storage structures (PESS) of CuS-rGO/CF@ Paraffin.

Are photothermal storage 3D phase change blocks controllable?

Therefore, a novel controllable strategy was proposed in this study to fabricate dual-functional photothermal storage three-dimensional (3D) phase change blocks (PCBs) with higher thermal conductivity (27.98 W/m·K) and spectral absorption (98.03 %) compared to those of most previously reported PCM-based devices.

How does a multi-scale photothermal structure promote light trapping and absorption?

The inner multi-scale CuS-rGO pyramidal photothermal structure promoted light trapping and absorption, and accelerated the water transportation by a gradient porous matrix of metal foam. The outer photothermal energy storage structures absorbed thermal energy in daylight, and released the thermal energy in the dark condition.

How does a photothermal energy storage structure affect evaporation rate?

For example, when the width of the photothermal energy storage structure increased from 2.5 mm to 15 mm, the surface temperature increased from 46.4 °C to 58.6 °C and the evaporation rate increased from 3.2 kg/m 2 h to 6.0 kg/m 2 h for the CPSES.

Can photothermal materials improve the evaporation efficiency of solar-driven desalination systems?

To further enhance the photothermal conversation efficiency, various types of photothermal materials have been developed to improve the evaporation efficiency of solar-driven desalination systems, such as plasma nanoparticles [, , ], carbon-based materials [, , , ], and semiconductor materials [, , ].