Journal
NANOMATERIALS
Volume 5, Issue 3, Pages 1136-1146Publisher
MDPI
DOI: 10.3390/nano5031136
Keywords
nanoparticles; molten salt; energy storage
Categories
Funding
- EPSRC [EP/L014211/1, EP/K002252/1]
- EPSRC [EP/F000464/1, EP/L014211/1, EP/L019469/1, EP/K002252/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K002252/1, EP/F000464/1, EP/L014211/1, EP/L019469/1] Funding Source: researchfish
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In this study, the effect of nanoparticle concentration was tested for both CuO and TiO2 in eutectic mixture of sodium and potassium nitrate. Results showed an enhancement in specific heat capacity (C-p) for both types of nanoparticles (+10.48% at 440 degrees C for 0.1 wt % CuO and +4.95% at 440 degrees C for 0.5 wt % TiO2) but the behavior toward a rise in concentration was different with CuO displaying its highest enhancement at the lowest concentration whilst TiO2 showed no concentration dependence for three of the four different concentrations tested. The production of cluster of nanoparticles was visible in CuO but not in TiO2. This formation of nanostructure in molten salt might promote the enhancement in C-p. However, the size and shape of these structures will most likely impact the energy density of the molten salt.
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