Giant barocaloric effect in neopentylglycol-graphene nanosheets composites with large thermal conductivity. Issue 10 (3rd October 2022)

• Record Type: Journal Article
• Authors: Liu, Yao; Zhou, Houbo; Xu, Zhitong; Liu, Die; Li, Jian; Hu, Fengxia; Ma, Tianyu
• Is Part Of: Materials research letters. Volume 10:Issue 10(2022)
• Page Start: 675
• Page End: 681
• Publication Date: 2022-10-03
• Subjects: Barocaloric effect -- plastic crystal -- thermal conductivity; Materials science -- Research -- Periodicals; Biomedical materials -- Research -- Periodicals; Composite materials -- Research -- Periodicals; Biomedical materials -- Research; Composite materials -- Research; Materials science -- Research; Periodicals; 620.1105
• DOI: 10.1080/21663831.2022.2086442
• Languages: English
• ISSNs: 2166-3831

Abstract

Abstract : 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 −1 K −1, and the barocaloric entropy change can still reach 122 Jkg −1 K −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. GRAPHICAL ABSTRACT: UF0001