Advances in Composite Phase Change Materials for Photothermal/Electrothermal Conversion and Storage
Phase change materials(PCM)are effective materials for thermal energy storage with a wide range of application prospects.However,their inherent low thermal and electrical conductivity greatly hinder their practical application in the field of thermal energy storage.By compositing PCM with different energy conversion materials,efficient mutual conversion among various forms of energy and thermal ener-gy has been achieved.The composite PCM plays a key role in solar photothermal/electrothermal conver-sion and storage.In the field of photothermal conversion,the compositing of high thermal conductivity photothermal conversion materials with PCM has optimized the thermal conductivity and effectively en-hanced the heat storage capacity,photothermal conversion efficiency,and solar energy utilization efficien-cy.In the field of electrothermal conversion,the preparation of electrothermal composite phase change ma-terials by introducing high electrical conductivity supporting materials has not only improved the electro-thermal conversion efficiency but also enriched the utilization methods of electrical energy.A detailed re-view of the latest research progress on photothermal and electrothermal conversion materials was provided,and the materials were classified.Aiming to offer new insights for the advancement of energy storage tech-nology,the advantages and disadvantages of various types of materials were analyzed,the mechanisms for improving thermal energy conversion efficiency were revealed,and future development directions and chal-lenges were prospected.
phase change materialphotothermal conversionelectrothermal conversionenergy conver-sion material
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