Giant barocaloric effect in neopentylglycol-graphene nanosheets composites with large thermal conductivity
| Autor: | Yao Liu, Houbo Zhou, Zhitong Xu, Die Liu, Jian Li, Fengxia Hu, Tianyu Ma |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Materials Research Letters, Vol 10, Iss 10, Pp 675-681 (2022) |
| Druh dokumentu: | article |
| ISSN: | 21663831 2166-3831 |
| DOI: | 10.1080/21663831.2022.2086442 |
| Popis: | We report the enhancement of the thermal conductivity of neopentylglycol (NPG) by compositing it with graphene nanosheets (GPNs). Adding 50 wt% GPNs enhanced the thermal conductivity from 0.42 to 18.4 Wm−1K−1, and the barocaloric entropy change can still reach 122 Jkg−1K−1 under pressure loading of 0 → 1.0 kbar. The obtained composites demonstrated reduced thermal hysteresis, which will facilitate the large reversible entropy change. The present work thus provides a simple and feasible way to enhance the thermal conductivity of plastic crystals with a giant barocaloric effect, and promisingly accelerate the application of these materials in the solid-state refrigeration technique. |
| Databáze: | Directory of Open Access Journals |
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