Molecular patterns in the thermophysical properties of pyridinium ionic liquids as phase change materials for energy storage in the intermediate temperature range

Q1 Physics and Astronomy Journal of Non-Crystalline Solids: X Pub Date : 2022-09-01 DOI:10.1016/j.nocx.2022.100108
Karolina Matuszek , Corinne Hatton , Mega Kar , Jennifer M. Pringle , Douglas R. MacFarlane
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引用次数: 3

Abstract

Phase change materials (PCMs) that store and release thermal energy via a reversible phase transition in the intermediate temperature range are a promising solution for renewable energy storage as they can be durable and inexpensive. Towards the development and understanding of new intermediate PCMs, this work describes a family of pyridinium ionic liquids and their thermophysical properties that show the potential of protic ionic liquids in the PCM field. Various pyridine structural isomers were used to explore the molecular patterns that affect the enthalpy of fusion and melting. The results show that small structural variations in the cation can change the thermophysical properties drastically; for example, melting temperatures varied between 357 ± 1 K and 499 ± 1 K, and enthalpies of fusion covered a wide spectrum from 38 to 190 J g−1 ± 5%. The most promising results in terms of PCM application, and one of the best among all protic ionic liquids reported thus far, were obtained for 2-hydroxypyridinium methanesulfonate [2-OHpyH][CH3SO3] (Tm = 433 K and ΔHf = 190 J g−1).

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在中温范围内,作为相变储能材料的吡啶离子液体热物理性质的分子模式
相变材料(PCMs)在中间温度范围内通过可逆相变存储和释放热能,是一种有前途的可再生能源存储解决方案,因为它们耐用且便宜。为了开发和认识新的中间体PCM,本文描述了一类吡啶离子液体及其热物理性质,显示了质子离子液体在PCM领域的潜力。利用不同的吡啶结构异构体探索了影响熔合焓和熔化焓的分子模式。结果表明,阳离子结构的微小变化会使材料的热物理性质发生巨大变化;例如,熔解温度在357±1k和499±1k之间变化,熔解焓覆盖了38到190jg−1±5%的宽谱。2-甲磺酸羟吡啶[2-OHpyH][CH3SO3] (Tm = 433 K, ΔHf = 190 J g−1)是目前报道的质子离子液体中在PCM应用方面最有希望的结果,也是最好的结果之一。
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来源期刊
Journal of Non-Crystalline Solids: X
Journal of Non-Crystalline Solids: X Materials Science-Materials Chemistry
CiteScore
3.20
自引率
0.00%
发文量
50
审稿时长
76 days
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Editorial Board Preface Preface Altering the optical, physical, and TL Dosimetric properties of MgSO4:Dy2O3:B2O3 transparent glass ceramic system: Evaluating the impact of roughness control and ZnO inclusion Editorial Board
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