Mg₃(Bi,Sb)₂-based thermoelectric modules for efficient and reliable waste-heat utilization up to 750 K

Abstract

Thermoelectric modules can directly convert the waste heat released by plants or vehicles into useful electricity, providing a clean and sustainable way to use fossil energy more efficiently. However, their...

Realizing High Energy Conversion Efficiency in a Novel Segmented‐Mg3(Sb, Bi)2/Cubic‐GeTe Thermoelectric Module for Power Generation

“…Figure 5. a) ω max of the prepared module (top) and P max of the module with size normalized to 40 mm × 40 mm × 2 mm (bottom) as functions oftemperature difference when the fill factor is normalized to 60% and 40%, in comparison with some reported modules (data obtained or calculated from references[15][16][17][18]22,27,28,30,[44][45][46] ). b) η max of the segmented-Mg 3 (Sb, Bi) 2 /cubic-GeTe module measured as a function of temperature difference, in comparison with reported η max values for Mg 3 (Sb, Bi) 2 -based modules,[22,27,28,30,[47][48][49] GeTe-based modules,[45,46] and some segmented modules [15][16][17][18]50,51]. …”

Interface and Surface Engineering Realized High Efficiency of 13% and Improved Thermal Stability in Mg3Sb1.5Bi0.5‐Based Thermoelectric Generation Devices

“…A single-leg η max of 13% was realized when T h reached 500 °C. Although our reported η is slightly lower than the Bi-rich TE device below 300 °C by Ying et al, [7] Literature results [7,8,29,30,32,33,36,56] are included for comparison.…”

“…Similarly, Fu et al used Nb as the TEiM for n-type Mg 3 Sb 2 and achieved a low ρ c of 9.7 µΩ cm 2 together with an increased ρ c of 26 µΩ cm 2 after the TE device service, showing a significant gap between the experimental and theoretical values. [33] Generally, a high σ s requires necessary diffusion; however, it might also result in an increased ρ c . Thus, it is difficult to balance the high σ s and low ρ c values of a single-element TEiM.…”

Hybrid Photovoltaic/Thermoelectric Systems for Round-the-Clock Energy Harvesting

“…With its outstanding TE performance and simplicity of preparation, it has occupied the dominant position in the commercial application of thermoelectric materials for more than half a century. Fortunately, over the past decade, many materials with superior ZT values have been discovered, for example, SnSe [ 33 , 112 , 113 , 114 , 115 , 116 , 117 , 118 ], Cu-based materials [ 119 , 120 ], and Mg-based materials [ 121 , 122 ]. Furthermore, organic semiconductors (OSC) have recently attracted attention with their unique characteristics enabling lightweight, flexible, and intrinsically low thermal conductivity [ 123 , 124 , 125 , 126 ].…”