Issue 9, 2024

Synthesis of heat storage ceramic λ-Ti3O5 using titanium chloride as the starting material

Abstract

This study reports a simple method for synthesizing λ-Ti3O5 through hydrogen reduction calcination using titanium chloride as the starting material. Upon applying 300 MPa pressure, λ-Ti3O5 transitions to β-Ti3O5 as a pressure-induced phase transformation. The β-Ti3O5 produced under pressure reverts to λ-Ti3O5 at 462 K upon heating, accumulating 7.78 kJ mol−1 of heat energy. An investigation of the influence of the crystalline size on the threshold pressure required for the phase transition and the values of transition enthalpy of the transition between λ-Ti3O5 and β-Ti3O5 reveals that larger crystalline sizes correlate with lower threshold pressures and higher transition enthalpies. Understanding the interplay between the crystalline size of λ-Ti3O5 and its heat storage properties is crucial for designing phase transition materials tailored to specific heat storage requirements. This research paves the way for the development of more efficient heat storage materials, potentially impacting various industrial applications and energy conservation methods.

Graphical abstract: Synthesis of heat storage ceramic λ-Ti3O5 using titanium chloride as the starting material

Supplementary files

Article information

Article type
Paper
Submitted
22 Dec 2023
Accepted
11 Mar 2024
First published
13 Mar 2024
This article is Open Access
Creative Commons BY-NC license

Mater. Adv., 2024,5, 3832-3837

Synthesis of heat storage ceramic λ-Ti3O5 using titanium chloride as the starting material

T. Kubota, R. Seiki, A. Fujisawa, A. F. Fadilla, F. Jia, S. Ohkoshi and H. Tokoro, Mater. Adv., 2024, 5, 3832 DOI: 10.1039/D3MA01162C

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