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Boosting low-pressure reversible barocaloric effect in plastic crystal KPF6 through controlled particle size

文献类型：期刊论文

作者Guan, Ziqi1; Bao, Changjiang1,2; Liu, Jiaqi1,3; Zhang, Zhao1,3; Wang, Haoyu1,3; Zhang, Kun1,3; Wang, Yanxu1,3; Tang, Yunlong1,3; Li, Bing1,3
刊名APPLIED PHYSICS LETTERS
出版日期2025-02-24
卷号126期号:8页码:8
ISSN号0003-6951
DOI10.1063/5.0247473
通讯作者Li, Bing(bingli@imr.ac.cn)
英文摘要Plastic crystals have large entropy change during first-order phase transitions due to strong molecular orientation disorder and volume changes. This feature has revived interest in plastic crystals, as they have great potential in solid-state refrigeration applications induced by external pressure. However, the reversible barocaloric effect in most plastic crystals does not compare favorably with their isothermal entropy change. Here, we demonstrate that controlling the particle size of the plastic crystal KPF6 can help achieve a compromise between the phase transition resistance at grain boundaries and the phase transition correlation within grains and induce a giant reversible barocaloric effect at low pressure. In particular, the 75-150 mu m plastic crystal KPF6 displays the lowest thermal hysteresis, with a giant reversible barocaloric entropy change of 50.0 J kg(-1) K-1 under a pressure change of 40 MPa. The reversible barocaloric effect can be more than doubled by simply optimizing the microstructures of the plastic crystal KPF6. Our work provides an effective way to enhance the reversible barocaloric effect in plastic crystal materials. We also give insight into the physical mechanism that enhances the reversible barocaloric effect through transmission electron microscopy analysis.
资助项目the Innovation Fund of Institute of Metal Research, CAS[2024-PY05] ; Innovation Fund of Institute of Metal Research, Chinese Academy of Sciences[52425107] ; Innovation Fund of Institute of Metal Research, Chinese Academy of Sciences[52401253] ; National Natural Science Foundation of China[ZDBS-LYJSC002] ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences[2024-BSBA-41] ; Natural Science Foundation of Liaoning Province[GZC20232741] ; Postdoctoral Fellowship Program of China Postdoctoral Science Foundation
WOS研究方向Physics
语种英语
WOS记录号WOS:001435530800003
出版者AIP Publishing
资助机构the Innovation Fund of Institute of Metal Research, CAS ; Innovation Fund of Institute of Metal Research, Chinese Academy of Sciences ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences ; Natural Science Foundation of Liaoning Province ; Postdoctoral Fellowship Program of China Postdoctoral Science Foundation
源URL  
专题金属研究所_中国科学院金属研究所
通讯作者Li, Bing
作者单位1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
2.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Liaoning, Peoples R China
3.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式
GB/T 7714		 Guan, Ziqi,Bao, Changjiang,Liu, Jiaqi,et al. Boosting low-pressure reversible barocaloric effect in plastic crystal KPF6 through controlled particle size[J]. APPLIED PHYSICS LETTERS,2025,126(8):8.
APA Guan, Ziqi.,Bao, Changjiang.,Liu, Jiaqi.,Zhang, Zhao.,Wang, Haoyu.,...&Li, Bing.(2025).Boosting low-pressure reversible barocaloric effect in plastic crystal KPF6 through controlled particle size.APPLIED PHYSICS LETTERS,126(8),8.
MLA Guan, Ziqi,et al."Boosting low-pressure reversible barocaloric effect in plastic crystal KPF6 through controlled particle size".APPLIED PHYSICS LETTERS 126.8(2025):8.

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来源：金属研究所

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