Enhanced thermoelectric and mechanical properties of p-type skutterudites with in situ formed Fe₃Si nanoprecipitate

Abstract

Hardness and indentation fracture toughness of La0.8Ti0.1Ga0.1Fe3CoSb12 can be improved by in situ formed Fe3Si, without sacrificing thermoelectric properties.

Roles of interface engineering in performance optimization of skutterudite‐based thermoelectric materials

“…For example, the SiC nanoparticles and whiskers have been implanted into the BiSbTe or skutterudites by mechanical mixing method, effectively improving fracture toughness and flexural strength, [89,90] which is desirable from the perspective of practical application. In light of this, Peng et al [91] revealed that the Fe 3 Si impurity with high melt point could be in situ constructed in p-type skutterudite La 0.8 Ti 0.1 Ga 0. [51] by adding extra Co and Si elements with identical mole ratios, [51] as shown in Figure 7a−c.…”

Inorganic thermoelectric materials: A review

“…(A) Miscellaneous Skutterudites with its lowest κ t value at divergent temperature range. (B) Miscellaneous optimization techniques for the enhancement of ZT values of high performance skutterudites …”

Enhanced Thermoelectric and Mechanical Performance in n-Type Yb-Filled Skutterudites through Aluminum Alloying

“…Nanocomposites play critical roles in affecting carriers and phonons' transport of TE materials. 11,28,29 The ex situ added or in situ precipitated nanoparticles, such as oxides, 26,30,31 antimonides, 32−36 silicides, 37,38 metals, 39,40 borides, 30,41 tellurides, 42−44 nitrides, 45 carbon-type materials, 19,29,46,47 magnetic materials, 48,49 can effectively disrupt the middlefrequency phonon propagation and thus lower the lattice thermal conductivity. 37,50,51 However, charged carriers with the shorter mean free path are almost unaffected.…”

“…37,50,51 However, charged carriers with the shorter mean free path are almost unaffected. Simultaneously, some nanoparticles, such as Fe 3 Si, SiC, CoSi, and Ta 0.8 Zr 0.2 B, and so forth, 37,38,41,52 can also boost the resistance of crack growth and improve the mechanical properties, which is important to the processing and application of TE materials.…”

“…Nanocomposites play critical roles in affecting carriers and phonons’ transport of TE materials. ,, The ex situ added or in situ precipitated nanoparticles, such as oxides, ,, antimonides, − silicides, , metals, , borides, , tellurides, − nitrides, carbon-type materials, ,,, or magnetic materials, , can effectively disrupt the middle-frequency phonon propagation and thus lower the lattice thermal conductivity. ,, However, charged carriers with the shorter mean free path are almost unaffected. Simultaneously, some nanoparticles, such as Fe 3 Si, SiC, CoSi, and Ta 0.8 Zr 0.2 B, and so forth, ,,, can also boost the resistance of crack growth and improve the mechanical properties, which is important to the processing and application of TE materials.…”