biostudies-literatureUnknown16(1)Zhao PNearly 50% of global primary energy consumption is lost as low-temperature heat. λ-Ti₃O₅ holds promise for waste heat harvesting and reuse; however, achieving reversible phase transitions between its λ and β phases under accessible conditions remains a major challenge. Here, we proposed a simple laser method that incorporates element substitution for sub-minute synthesis (20-60 s) of λ-M_xTi_3-xO₅ (M = Mg, Al, Sc, V, Cr, Mn, or Fe, 0.09 ≤ x ≤ 0.42). In particular, aluminum-substituted λ-Al_xTi_3-xO₅ demonstrated the lowest energy barrier, with a transition pressure of 557 MPa and temperature of 363 K. Notably, compression of the (001) crystal plane could reduce the transition pressure to only 35-40 MPa, enaNature communications2443https://www.ebi.ac.uk/biostudies/studies/S-EPMC11897413biostudies-literatureSub-minute synthesis and modulation of β/λ-M<sub>x</sub>Ti<sub>3-x</sub>O<sub>5</sub> ceramics towards accessible heat storage.PMC11897413Li GZou XCheng PShi CLu XZhao PSun CXu QPang ZCheng HYu XXiong XfalseSub-minute synthesis and modulation of β/λ-M<sub>x</sub>Ti<sub>3-x</sub>O<sub>5</sub> ceramics towards accessible heat storage.Nearly 50% of global primary energy consumption is lost as low-temperature heat. λ-Ti₃O₅ holds promise for waste heat harvesting and reuse; however, achieving reversible phase transitions between its λ and β phases under accessible conditions remains a major challenge. Here, we proposed a simple laser method that incorporates element substitution for sub-minute synthesis (20-60 s) of λ-M_xTi_3-xO₅ (M = Mg, Al, Sc, V, Cr, Mn, or Fe, 0.09 ≤ x ≤ 0.42). In particular, aluminum-substituted λ-Al_xTi_3-xO₅ demonstrated the lowest energy barrier, with a transition pressure of 557 MPa and temperature of 363 K. Notably, compression of the (001) crystal plane could reduce the transition pressure to only 35-40 MPa, ena2025-01-01T00:00:00Z2025 Mar2025-04-04T01:28:28.21Z2025-04-04T01:28:28.21ZS-EPMC118974134006916010.1038/s41467-025-57604-0