Highly dense Sr0.95Sm0.0125Dy0.0125□0.025Ti0.90Nb0.10O3±δ/ZrO2 composite preparation directly through spark plasma sintering and its thermoelectric properties

Bakhshi, Hamed; Sarraf-Mamoory, Rasoul; Yourdkhani, Amin; AbdelNabi, Ahmed Ali; Mozharivskyj, Yurij

doi:10.1039/c9dt03934a

Cited by 3 publications

(1 citation statement)

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“…In summary, defects engineering of the introduction of A-site cation vacancies such as Sr 1±y Ti 0.9 Nb 0.1 O 3±δ [55] and Sr 0.95 Sm 0.0125 Dy 0.0125 Ti 0.90 Nb 0.10 O 3±δ system [147], or oxygen vacancies of Sr 0.8 La 0.067 Ti 0.8 Nb 0.2 O 3−δ [144], play a synergistic role in charge and phonon transport properties specifically generating additional phonon scattering centers including point defects, dislocations, and strain fields to suppress κ while maintaining rapid carrier transport in the perovskite lattice; hence, the resulting ZT ranges in 0.25-0.4.…”

Section: Defect Engineeringmentioning

confidence: 99%

Development and Applications of Thermoelectric Oxide Ceramics and Devices

et al. 2023

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Thermoelectric materials have gained wide attention to realize multilevel efficient energy management to alleviate the increasingly severe energy crisis. Oxide ceramics were well-explored as potential thermoelectric candidates because of their outstanding merits, including abundance, eco-friendliness, high-temperature stability, and chemical stability. In this work, we aim to provide a comprehensive summary of the diversified state-of-the-art oxide ceramics and establish the links between composition designing, preparation process, structural characteristics, and properties to summarize the underlying chemistry and physics mechanism of band engineering, doping, composited with the second phase, defects engineering, and entropy engineering. Furthermore, advanced device design and applications such as thermoelectric modules, miniature generators, sensors, and coolers were reviewed. Ultimately, the challenges and future perspective of oxides ceramics for the device design and thermoelectric applications in the development of energy harvesting technology have been prospected.

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Section: Defect Engineeringmentioning

confidence: 99%