U.S. Department of Energy - Energy Efficiency and Renewable Energy

SunShot Initiative

Molten Salt-Carbon Nanotube Thermal Storage

TEES logo Graphic of a chart with dots and horizontal lines.

Specific heat as a function of nanoparticle concentration

Texas Engineering Experiment Station (TEES), under the Thermal Storage FOA, created a composite thermal energy storage material by embedding nanoparticles in a molten salt base material.


TEES measured the specific heat using modulated digital scanning calorimetry and created a system performance and economic model to assess the utility of the composite material in a concentrating solar power application.


By embedding ceramic nanoparticles in a molten salt, TEES increased the specific heat of the TES material from 1.55 Joules per gram Kelvin (J/g-k) to 1.9 J/g-K.

Publications, Patents, and Awards

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Learn about other DOE competitive awards for concentrating solar power research that are in progress.