Li, Jinjie;
Parkes, Michael A;
Salzmann, Christoph G;
(2024)
Extensive Screening and Performance Testing of Nucleating Agents for the Sodium Acetate Trihydrate Phase-Change Material.
Crystal Growth & Design
, 24
(20)
pp. 8292-8300.
10.1021/acs.cgd.4c00691.
Preview |
Text
supporting information_revision.pdf - Accepted Version Download (861kB) | Preview |
Preview |
Text
Salzmann_li-et-al-2024-extensive-screening-and-performance-testing-of-nucleating-agents-for-the-sodium-acetate-trihydrate-phase (1).pdf Download (2MB) | Preview |
Abstract
Heat batteries often rely on phase-change materials that undergo phase transitions upon heat charging and release. Sodium acetate trihydrate (SAT) is considered to be one of the best phase-change materials in terms of storage capacity. Yet, it is well-known for supercooling, which makes the search for effective nucleating agents a high priority. To perform extensive screening of nucleating agents and to test their performance, we designed a new instrument. The HeatMaster is capable of analyzing six samples on the gram-scale in parallel using the principle of power compensation, which means that heat releases and uptakes can be obtained in a quantitative fashion. Out of the 36 tested nucleating agents, CaCl2·2H2O was identified as the best nucleating agent that outperforms several of the previously known nucleating agents in terms of temperature range of operation up to 80 °C. CaCl2·2H2O performs reliably as a nucleating agent for SAT down to 0.5 wt %. MgCl2·6H2O was also identified as a nucleating agent. Yet, similar to the well-known Na2HPO4·12H2O, its performance is not reliable after heating to 80 °C. Out of the three nucleating agents, CaCl2·2H2O shows the best performance with respect to deterioration of the heat releases upon extensive thermal cycling with a maximum temperature of 65 °C.
| Type: | Article |
|---|---|
| Title: | Extensive Screening and Performance Testing of Nucleating Agents for the Sodium Acetate Trihydrate Phase-Change Material |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1021/acs.cgd.4c00691 |
| Publisher version: | https://doi.org/10.1021/acs.cgd.4c00691 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons License. The images or other third-party material in this article are included in the Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| Keywords: | Science & Technology, Physical Sciences, Technology, Chemistry, Multidisciplinary, Crystallography, Materials Science, Multidisciplinary, Chemistry, Materials Science, LATENT-HEAT-STORAGE, THERMAL-ENERGY STORAGE, COMPOSITE, SOLIDIFICATION, HEXAHYDRATE, SYSTEMS, PCM |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10203263 |
Archive Staff Only
 |
View Item |
