The Role of H-bonding in Phase Change Materials

Karolina Matuszek Monash University


Phase change materials (PCMs) which melt in the temperature range of 100-230 °C, are a promising alternative for the storage of thermal energy. In this range, large amounts of energy available from solar-thermal, or other forms of renewable heat, can be stored and applied to domestic or industrial processes, or to an Organic Rankine Cycle (ORC) engine to generate electricity. The amount of energy absorbed is related to the latent heat of fusion (ΔHf) and is often connected to the extent of hydrogen bonding in the PCM. Herein, we report fundamental studies, including crystal structure and Hirshfeld surface analysis, of a family of guanidinium organic salts that exhibit high values of ΔHf, demonstrating that the presence and strength of H-bonds between ions plays a key role in this property.


Thumbnail image of Manuscript.pdf
download asset Manuscript.pdf 0.88 MB [opens in a new tab]

Supplementary material

Thumbnail image of MX42_18_3.png
download asset MX42_18_3.png 0.54 MB [opens in a new tab]
MX42 18 3
Thumbnail image of Supplementary information.pdf
download asset Supplementary information.pdf 3 MB [opens in a new tab]
Supplementary information