Thermal batteries based on inverse barocaloric effects.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 36800425.
- Also identified by DOI 10.1126/sciadv.add0374 and PMC identifier 9937572.
- Licence recorded as CC BY-NC.
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Abstract
To harvest and reuse low-temperature waste heat, we propose and realize an emergent concept-barocaloric thermal batteries based on the large inverse barocaloric effect of ammonium thiocyanate (NH<sub>4</sub>SCN). Thermal charging is initialized upon pressurization through an order-to-disorder phase transition, and the discharging of 43 J g<sup>-1</sup> takes place at depressurization, which is 11 times more than the input mechanical energy. The thermodynamic equilibrium nature of the pressure-restrained heat-carrying phase guarantees stable long-duration storage. The barocaloric thermal batteries reinforced by their solid microscopic mechanism are expected to substantially advance the ability to take advantage of waste heat.