AUTHOR=Muramoto Kei , Takahashi Yoshihiro , Terakado Nobuaki , Yamazaki Yoshiki , Suzuki Shigeru , Fujiwara Takumi 

TITLE=Fabrication of VO2-Dispersed Glass in B2O3-P2O5-V2O5 System and Its Thermal Property

JOURNAL=Frontiers in Materials

VOLUME=7

YEAR=2020

URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2020.00005

DOI=10.3389/fmats.2020.00005

ISSN=2296-8016

ABSTRACT=<p>Phase change material (PCM), which enables heat storage based on phase transition, plays an important role for efficient energy utilization. This paper briefly describes our recent study about all-solid PCM by combination of vanadium dioxide (VO<sub>2</sub>) with latent heat storage capacity and multicomponent glass, i.e., VO<sub>2</sub>-dispersed glass. A B<sub>2</sub>O<sub>3</sub>-P<sub>2</sub>O<sub>5</sub>-V<sub>2</sub>O<sub>5</sub> glass system is used as a matrix for the VO<sub>2</sub>-dispersed glass. An attempt to describe its latent heat storage function is given. Endothermic behavior due to structural phase transition of the VO<sub>2</sub> crystals was observed in the VO<sub>2</sub>-dispersed sample, and the transition enthalpy corresponding to latent heat storage capacity was estimated to be Δ<italic>H</italic>~9.5 J/g. The value of the studied sample was larger than the value of dispersed glass in the BaO-TeO<sub>2</sub>-V<sub>2</sub>O<sub>5</sub> system that was previously reported. Potential for PCM was considered in the studied sample.</p>