Vanadium dioxide for energy conservation and energy storage applications: Synthesis and performance improvement
Date: Nov 20, 2017
Highlights
- • Elaborated six chemical vapor deposition (CVD) methods to growth VO2 pure phase.
- • Discussed the optimum conditions for VO2 pure phase growth for various CVD methods.
- • Strategies to improve VO2′s thermochromic and electrochemical performance.
- • Future perspective to stimulate the research in energy saving and storage field.
Abstract
Vanadium dioxide (VO2) is one of the most widely studied inorganic phase change material for energy storage and energy conservation applications. Monoclinic VO2[VO2(M)] changes from semiconducting phase to metallic rutile phase at near room temperature and the resultant abrupt suppressed infrared transmittance at high temperature makes it a potential candidate for thermochromic smart window application to cut the air-condition usage. Meanwhile proper electrical potential, stable structure and good interaction with lithium ions make metastable VO2 [VO2(B)] an attractive material for fabrication of electrodes for batteries and supercapacitors. However, some long-standing issues have plagued its usage. In thermochromic application, high transition temperature (τc), low luminous transmittance (Tlum) and undesirable solar modulation ability (△Tsol) are the key problems, while in energy storage applications, short cycling
