Sub-minute synthesis and modulation of β/λ-MxTi3-xO5 ceramics towards accessible heat storage

• DOI: 10.1038/s41467-025-57604-0
• Publication Date: 2025-03-11T21:35:36Z
• Authors: Pengfei Zhao; Guangshi Li; Xiaolu Xiong; Peng Cheng; Zhongya Pang; Chenteng Sun; Hu Cheng; Caijuan Shi; Xing Yu; Qian Xu; Xingli Zou; Xionggang Lu
• Keywords: Modulation (music)

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 β phases under accessible conditions remains a major challenge. Here, we proposed simple laser method that incorporates element substitution sub-minute synthesis (20–60 s) λ-MxTi3-xO5 (M = Mg, Al, Sc, V, Cr, Mn, or Fe, 0.09 ≤ x 0.42). In particular, aluminum-substituted λ-AlxTi3-xO5 demonstrated the lowest barrier, with transition pressure 557 MPa temperature 363 K. Notably, compression (001) crystal plane could reduce to only 35–40 MPa, enabling applicability wide applications in recovery future lunar explorations. Reversible Ti3O5 moderate still remain challenging. authors report elemental strategies achieve storage