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1. (WO2016084441) PROCESS FOR PRODUCING VANADIUM-DIOXIDE-BASED HEAT-STORAGE MATERIAL

Pub. No.:    WO/2016/084441    International Application No.:    PCT/JP2015/073982
Publication Date: Jun 2, 2016 International Filing Date: Aug 26, 2015
IPC: C09K 5/02
Applicants: NIPPON DENKO CO., LTD.
新日本電工株式会社
Inventors: TANAKA Yoshitaka
田中 義孝
AKIMOTO Hideki
秋本 英樹
Title: PROCESS FOR PRODUCING VANADIUM-DIOXIDE-BASED HEAT-STORAGE MATERIAL
Abstract:
A process for producing a VO2-based heat-storage material, characterized by comprising a step (a) in which V2O5 is mixed with a carbon material and a step (b) in which the resultant mixture is heated in an inert gas atmosphere, the mixing proportion of the V2O5 to the carbon material in the mixing step (a) being in the range of 1:(0.41-0.54) in terms of the molar ratio of V2O5:(carbon atoms in the carbon material), and the heating temperature in the heating step (b) being above 900ºC but lower than 1,542ºC. Due to this, a process is provided by which a VO2-based heat-storage material having sufficient heat storage properties is easily mass-produced at low cost.