制冷
塑料晶体
材料科学
离子键合
相变
热力学
空调
离子
化学
有机化学
物理
作者
Samantha L. Piper,Leena Melag,Mega Kar,Azra Sourjah,Xiong Xiao,Eric F. May,Kondo‐François Aguey‐Zinsou,Douglas R. MacFarlane,Jennifer M. Pringle
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2025-01-02
卷期号:387 (6729): 56-62
标识
DOI:10.1126/science.adq8396
摘要
Barocaloric (BC) materials offer the potential for highly energy-efficient refrigeration by generating heat absorption through the effect of pressure on a solid-solid phase transition. However, very few of the known materials have the required phase transition in the temperature regions necessary for domestic refrigeration or air conditioning. We introduce organic ionic plastic crystals (OIPCs) as a new family of BC materials. OIPCs display subambient transition temperatures, so-called “colossal” entropy changes (92 to 240 joules per kilogram per kelvin), and a high sensitivity to pressure, up to 23.7 kelvin per kilobar. The BC responses achieved with these prototype OIPC-BCs are tunable through structural modification of the ions; this wide matrix of possible combinations of structure and function indicates the scope of OIPCs as a new class of material for efficient and sustainable cooling technologies.
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