报告题目：Colossal barocaloric effects: refrigeration and heat storage
报告人：李昺 研究员
主持人（邀请人）： 张立军 教授
报告时间：2025年6月30日（星期一） 14:00-16:30
报告地点：逸夫机械材料馆八楼报告厅
主办单位：汽车材料电子艺游平台大全限时优惠部重点实验室，电子艺游平台大全限时优惠
摘要：
Plastic crystals, also known as orientationally disordered crystals, are characterized by dynamically and randomly oriented molecules located on highly symmetric lattices. The orientational degree of freedom in plastic crystals can be effectively harnessed through a combined temperature-pressure cycle for refrigeration and heat storage applications. As temperature decreases, an ordered state forms with aligned molecules and broken symmetry. Similarly, external pressure can also induce this phase transition, where colossal barocaloric effects are observed, named for the significant thermal changes they produce. These effects offer a promising solution for solid-state cooling technology. Additionally, the plastic crystal state can be supercooled, eventually becoming orientational glasses (glassy crystals). A small pressure application can induce crystallization, releasing substantial latent heat. Following the discovery of colossal barocaloric effects in plastic crystals in 2019 [1], a great diversity of new materials has emerged, benefiting the development of emergent refrigeration technologies [2-5]. Very recently, pressure-tuned heat storage has become more appealing due to the urgent need for effective reuse of massive waste heat in various settings [6]. In this talk, the latest advances in colossal barocaloric effects for refrigeration and heat storage applications will be discussed in detail.
[1]. B. Li et al., Nature 567, 506 (2019).
[2]. Q. Ren et al., Nat. Commun. 13, 2293 (2022).
[3]. K. Zhang et al., Adv. Func. Mater. 32, 2112622 (2022).
[4]. Z. Zhang et al., Sci. Adv. 9, eadd0374 (2023).
[5]. W. Li et al., Angew. Chem. Int. Ed., in revision, (2025).
[6]. K. Zhang et al., The Innovation 5, 100577 (2024).
报告人简介：
李昺，功能材料与器件研究部负责人，中国科电子艺游平台大全限时优惠金属研究所所务委员、研究员。主要从事新型制冷材料研究。在Nature、Nature Materials、Science Advances、Nature Communications、Physical Review Letters等刊物上发表学术论文100余篇；申请中国及PCT专利26项，已授权11项。曾获中国青年科技奖、中国科电子艺游平台大全限时优惠青年科学家奖、日本中子学会奖励赏等奖励。主持了电子艺游平台大全限时优惠杰出青年科学基金项目、电子艺游平台大全限时优惠重点研发计划项目/课题和中国科电子艺游平台大全限时优惠“从0到1”十年期项目等。
