Stimuli-Responsive Organic Phase Change Materials:Molecular Designs and Applications in Energy Storage

作     者：My Le Grace G.D.Han 

作者机构：Department of ChemistryBrandeis UniversityWalthamMassachusetts 02453United States 

出 版 物：《Accounts of Materials Research》 (材料研究述评（英文）)

年 卷 期：2022年第3卷第6期

页      面：634-643页

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 

基　　金：supported by NSF CAREER award(DMR-2142887) Brandeis NSF MRSEC Bioinspired Soft Materials(DMR-2011846) SPROUT award(2021-029)from the Brandeis Office of Technology Licensing 

主　　题：crystallization latent Storage 

摘      要：Achieving a stable latent heat storage over a wide temperature range and a long period of time as well as accomplishing a controlled heat release from conventional phase change materials have remained prominent challenges in thermal energy *** the conventional phase change materials have the fixed phase transition temperatures under the standard ambient pressure,the latent heat storage is only viable at temperatures higher than their melting and crystallization *** the latent heat is stored in the liquid phase of materials,it is imperative to maintain the temperature of the system above its crystallization point to prolong the heat *** the continuous energy input or extensive insulation,the crystallization of liquid occurs spontaneously,leading to the loss of latent heat and a short heat storage ***,there exists a critical need to develop methods that enable the control over the phase transition of materials,unrestricted by the temperature of the *** successful development of such methods and materials in recent years has been viable through the incorporation of molecular switches that respond to external stimuli,notably light,electrochemical bias,and ions,by reversible structural *** have discovered novel functional organic material systems that exhibit solid-to-liquid phase transitions controlled by optical and electrical stimulation,along with other research *** development and optimization of such materials are enabled by the judicious molecular designs and *** this Account,we will introduce the cutting-edge design principles of controllable phase change materials that have demonstrated the storage of thermal energy for up to a couple of months without crystallization over a wide temperature range,from subzero to over 100℃,which addresses the major weakness of conventional phase change *** particular,materials that are controlled by solar irradiation and compounds that exhibit sub