Long-term heat-storage materials based on λ-Ti₃O₅for green transformation (GX)

Abstract

Effective reuse of waste heat energy is an important energy savings issue for green transformation. In general, phase-change heat storage materials cannot store energy for a prolonged period. If a...

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

“…Recently, we developed a pressure-responsive thermal storage material that discharges stored heat when subjected to external pressure. 18,19 This material—λ-phase trititanium pentoxide (λ-Ti 3 O 5 )—is a metastable phase present only in nanoscale materials and not in bulk forms. 18,20 Furthermore, λ-Ti 3 O 5 undergoes a reversible phase transition with beta-phase trititanium pentoxide (β-Ti 3 O 5 ) under external stimuli such as light, pressure, or temperature.…”

“…18,20 Furthermore, λ-Ti 3 O 5 undergoes a reversible phase transition with beta-phase trititanium pentoxide (β-Ti 3 O 5 ) under external stimuli such as light, pressure, or temperature. 18–21 Moreover, λ-Ti 3 O 5 is an environmentally friendly material purely composed of titanium and oxygen. 18–22 To effectively use this material, scalable synthesis methods for mass production and strategies for enhancing thermal storage properties are crucial.…”

“…18–21 Moreover, λ-Ti 3 O 5 is an environmentally friendly material purely composed of titanium and oxygen. 18–22 To effectively use this material, scalable synthesis methods for mass production and strategies for enhancing thermal storage properties are crucial. Accordingly, various synthesis techniques for λ-Ti 3 O 5 have been explored.…”

Long‐Term Heat‐Storage Ceramics based on Zr‐Substituted λ‐Ti3O5

“…To realize such a material, an effective approach is to investigate various types of first-order phase transition materials. [11][12][13][14][15] In 2015, we proposed a new concept of "long-term heat storage ceramics", in which latent heat is preserved until the material is triggered by external stimuli. [11,16] The first example is lambda-trititanium-pentoxide (λ-Ti 3 O 5 ), which exhibits a phase transition to beta-trititanium-pentoxide (β-Ti 3 O 5 ) by pressure application.…”

“…[11][12][13][14][15] In 2015, we proposed a new concept of "long-term heat storage ceramics", in which latent heat is preserved until the material is triggered by external stimuli. [11,16] The first example is lambda-trititanium-pentoxide (λ-Ti 3 O 5 ), which exhibits a phase transition to beta-trititanium-pentoxide (β-Ti 3 O 5 ) by pressure application. [11,[16][17][18][19] λ-Ti 3 O 5 has been synthesized in 2010 as a different phase from originally known Ti 3 O 5 phases (α-, β-, γ-, and δ-phases).…”