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

Accounts of Materials Research 2022年第6期3卷 634-643页

作者： My Le Grace G.D.Han Department of Chemistry Brandeis UniversityWalthamMassachusetts 02453United States

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

关键词： crystallization latent Storage

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