Abstract
Energy storage technology is crucial for a sustainable society, and its realisation strongly depends on the development of materials. Oxide glass exhibits high durability. Moreover, the amorphous structure of the glass without periodic ordering demonstrates excellent formability and controllability, thus enabling a large-scale production. These factors provide impetus for the development of new materials for thermal management applications. As vanadium dioxide (VO2) with a strongly correlated electron system exhibits a structural phase transition, leading to a large heat of transition. Therefore, VO2 demonstrates immense potential as a phase change material (PCM). This study reports the fabrication of VO2-dispersed glass and examines its potential as a new latent heat storage material, which can be applied for massive PCM heat storage applications.
Highlights
Heat is known to be a considerable form of energy available in the surrounding environment, e.g., solar-thermal energy and exhaust heat, which are generated by natural and artificial actions, respectively
Note that heat storage materials based on this phase transition are referred to as phase change materials (PCMs)[2,3,4,5,6]
It is of particular interest in developing new candidates for novel heat storage material, e.g., λ-trititanium pentoxide (Ti3O5) based solid–solid phase transition, microencapsulated metal-based PCM, and so on[7,8]: Vanadium dioxide (VO2) exhibits a strongly correlated electron system, which exhibits a structural phase transition at 68 °C
Summary
Heat is known to be a considerable form of energy available in the surrounding environment, e.g., solar-thermal energy and exhaust heat, which are generated by natural and artificial actions, respectively. Some hazards are inevitable, i.e., damage to the container because of the large volume change occurring during the phase transition and leaking out of the liquid In these circumstances, it is of particular interest in developing new candidates for novel heat storage material, e.g., λ-trititanium pentoxide (Ti3O5) based solid–solid phase transition, microencapsulated metal-based PCM, and so on[7,8]: Vanadium dioxide (VO2) exhibits a strongly correlated electron system, which exhibits a structural phase transition at 68 °C. Glass has been extensively examined for photonics and as energy-related materials[14,15,16,17] Based on this background, VO2-dispersed glass exhibits immense potential for PCM on the basis of the solid–solid phase transition. An incorporation method[18] is utilised for fabricating the dispersed glass (Fig. 2), aiming to realise the all-solid PCM
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