Giant barocaloric effect in neopentylglycol-graphene nanosheets composites with large thermal conductivity

Yao Liu; Houbo Zhou; Zhitong Xu; Die Liu; Jian Li; Fengxia Hu; Tianyu Ma

doi:10.1080/21663831.2022.2086442

Materials Research Letters (Oct 2022)

Giant barocaloric effect in neopentylglycol-graphene nanosheets composites with large thermal conductivity

Yao Liu,
Houbo Zhou,
Zhitong Xu,
Die Liu,
Jian Li,
Fengxia Hu,
Tianyu Ma

Affiliations

Yao Liu: Frontier Institute of Science and Technology, State Key Laboratory for Mechanical Behavior of Materials, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi'an, People’s Republic of China
Houbo Zhou: Beijing National Laboratory for Condensed Matter Physics and State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing, People’s Republic of China, School of Physical Sciences,University of Chinese Academy of Sciences, Beijing, People’s Republic of China
Zhitong Xu: Frontier Institute of Science and Technology, State Key Laboratory for Mechanical Behavior of Materials, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi'an, People’s Republic of China
Die Liu: Frontier Institute of Science and Technology, State Key Laboratory for Mechanical Behavior of Materials, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi'an, People’s Republic of China
Jian Li: Frontier Institute of Science and Technology, State Key Laboratory for Mechanical Behavior of Materials, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi'an, People’s Republic of China
Fengxia Hu: Beijing National Laboratory for Condensed Matter Physics and State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing, People’s Republic of China, School of Physical Sciences,University of Chinese Academy of Sciences, Beijing, People’s Republic of China
Tianyu Ma: Frontier Institute of Science and Technology, State Key Laboratory for Mechanical Behavior of Materials, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi'an, People’s Republic of China

DOI: https://doi.org/10.1080/21663831.2022.2086442
Journal volume & issue: Vol. 10, no. 10
pp. 675 – 681

Abstract

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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.

Published in Materials Research Letters

ISSN: 2166-3831 (Online)
Publisher: Taylor & Francis Group
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.tandfonline.com/journals/tmrl

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