| Colossal barocaloric effect of the spin-crossover compound {Fe(pz)2(BH3CN)2} near room temperature | |
| Li, Ruixin1; Zhang, Zhe2,3; Bibik, Yurii S.4; Gural'skiy, Il'ya A.4; Zatovsky, Igor. V.5,6; Liu, Zhaodong1; Li, Quanjun1; Li, Bing2,3; Levchenko, Georgiy1,7; Liu, Bingbing1 | |
| 通讯作者 | Li, Bing(bingli@imr.ac.cn) ; Levchenko, Georgiy(g-levch@ukr.net) |
| 2024-03-18 | |
| 发表期刊 | APPLIED PHYSICS LETTERS
 |
| ISSN | 0003-6951 |
| 卷号 | 124期号:12页码:7 |
| 摘要 | As one of the most likely alternatives to traditional vapor compression refrigeration technology, solid refrigeration technology based on the barocaloric effect (BCE) has attracted extensive attention in recent years. Spin-crossover (SCO) compounds are considered suitable for working at low driving pressures due to high-pressure sensitivity and small hysteresis width. However, the entropy change (Delta S-SCO) of the SCO compound is smaller than that of other excellent barocaloric materials (plastic crystals and two-dimensional perovskites). Here, we report the BCE of the SCO compound {Fe(pz)(2)(BH3CN)(2)} (pz = pyrazine) with a smaller molar mass and a third source of entropy change besides electron and vibrational entropy changes. Compound {Fe(pz)(2)(BH3CN)(2)} exhibits high pressure sensitivity (dT(1/2)/dP = 20.2 K kbar(-1)) as well as entropy change (Delta S-SCO = 202 J kg(-1) K-1). The maximum values of reversible isothermal entropy change (Delta S-it,S-rev,S-max) and adiabatic temperature change (Delta T-ad,T-rev,T-max) at 1 kbar are only 103 J kg(-1) K-1 and similar to 0 K, respectively, due to the hysteresis behavior. However, at sufficiently high driving pressures, Delta S-it,S-rev,S-max exceeds 200 J kg(-1) K-1, and Delta T-ad,T-rev,T-max can reach similar to 47 K, which exceeds all SCO compounds reported in BCE studies and is comparable to some plastic-crystalline and two-dimensional perovskite barocaloric materials. The excellent BCE of the SCO compound {Fe(pz)(2)(BH3CN)(2)} is mainly due to its small molar mass, which makes the unit mass compound exhibit higher Delta S-SCO, while the introduction of the third source of entropy change-the reorientation entropy change (Delta S-reo), only plays a small role. This is expected to promote the practical application of SCO compounds as barocaloric refrigerants. |
| 资助者 | European Federation of Academies of Sciences and Humanities ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences ; Liaoning Provincial Science Fund for Distinguished Young Scholar |
| DOI | 10.1063/5.0195431 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | European Federation of Academies of Sciences and Humanities ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences[ZDBS-LY-JSC002] ; Liaoning Provincial Science Fund for Distinguished Young Scholar[2023JH6/100500003] ; [EFDS-FL2-05] |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Applied |
| WOS记录号 | WOS:001186659700025 |
| 出版者 | AIP Publishing |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/185328 |
| 专题 | 中国科学院金属研究所 |
| 通讯作者 | Li, Bing; Levchenko, Georgiy |
| 作者单位 | 1.Jilin Univ, Int Ctr Future Sci, State Key Lab Superhard Mat, Changchun 130012, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 4.Taras Shevchenko Natl Univ Kyiv, Dept Chem, UA-01601 Kiev, Ukraine 5.NASU, FD Ovcharenko Inst Biocolloidal Chem, UA-03142 Kiev, Ukraine 6.Pavla Tychyna Uman State Pedag Univ, Dept Chem, UA-20300 Uman, Ukraine 7.Donetsk Inst Phys & Engn, UA-03028 Kiev, Ukraine |
| 推荐引用方式 GB/T 7714 | Li, Ruixin,Zhang, Zhe,Bibik, Yurii S.,et al. Colossal barocaloric effect of the spin-crossover compound {Fe(pz)2(BH3CN)2} near room temperature[J]. APPLIED PHYSICS LETTERS,2024,124(12):7. |
| APA | Li, Ruixin.,Zhang, Zhe.,Bibik, Yurii S..,Gural'skiy, Il'ya A..,Zatovsky, Igor. V..,...&Liu, Bingbing.(2024).Colossal barocaloric effect of the spin-crossover compound {Fe(pz)2(BH3CN)2} near room temperature.APPLIED PHYSICS LETTERS,124(12),7. |
| MLA | Li, Ruixin,et al."Colossal barocaloric effect of the spin-crossover compound {Fe(pz)2(BH3CN)2} near room temperature".APPLIED PHYSICS LETTERS 124.12(2024):7. |
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