Effects of antimony content in MgAg0.97Sbx on output power and energy conversion efficiency
Source abstract
Abstract
Abstract We report the effect of Sb content in MgAg0.97Sbx (x = 0.99, 0.9925, 0.995, and 1.00) on output power and leg efficiency. Due to the doubling of carrier concentration with increasing the Sb content, power factor is enhanced around 20% over the whole temperature range. Simultaneously, the average thermoelectric figure of merit (ZT) is even enhanced a little in spite of the increased corresponding thermal conductivity. We further calculated the engineering power factor (PF)eng, output power, engineering figure of merit (ZT)eng and leg efficiency by taking into account of the Thomson effect. Assuming Tc = 300 K and Th = 548 K, leg length ∼2 mm, an output power of ∼1.77 W cm−2 and leg efficiency η of ∼10.1% are finally obtained for the optimized composition MgAg0.97Sb0.995.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Thermoelectric Materials and Devices · Superconductivity in MgB2 and Alloys · Thermal Expansion and Ionic Conductivity
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (36)
Show source-provided references
1. Rowe · 1995
2. Complex thermoelectric materials10.1038/nmat2090 ↗
3. Recent advances in thermoelectric nanocomposites10.1016/j.nanoen.2011.10.001 ↗
4. Band engineering of thermoelectric materials10.1002/adma.201202919 ↗
5. Current progress and future challenges in thermoelectric power generation: from materials to devices10.1016/j.actamat.2014.12.042 ↗
6. The panoscopic approach to high performance thermoelectrics10.1039/C3EE43099E ↗
7. High-thermoelectric performance of nanostructured bismuth antimony telluride bulk alloys10.1126/science.1156446 ↗
8. Dense dislocation arrays embedded in grain boundaries for high-performance bulk thermoelectrics10.1126/science.aaa4166 ↗
9. High-performance bulk thermoelectrics with all-scale hierarchical architectures10.1038/nature11439 ↗
10. Convergence of electronic bands for high performance bulk thermoelectrics10.1038/nature09996 ↗
11. Enhanced thermoelectric figure-of-merit in nanostructured p-type silicon germanium bulk alloys10.1021/nl8026795 ↗
12. Enhancement of thermoelectric properties by modulation-doping in silicon germanium alloy nanocomposites10.1021/nl3003045 ↗
13. Multiple-filled skutterudites: high thermoelectric figure of merit through separately optimizing electrical and thermal transports10.1021/ja111199y ↗
14. Yb14MnSb11: new high efficiency thermoelectric material for power generation10.1021/cm060261t ↗
15. Ultralow thermal conductivity and high thermoelectric figure of merit in SnSe crystals10.1038/nature13184 ↗
16. Studies on the Bi2Te3–Bi2Se3–Bi2S3 system for mid-temperature thermoelectric energy conversion10.1039/C2EE23549H ↗
17. Bulk nanostructured thermoelectric materials: current research and future prospects10.1039/b822664b ↗
18. Enhancement of thermoelectric Figure-of-Merit by a Bulk Nanostructuring Approach10.1002/adfm.200901512 ↗
19. Trend for thermoelectric materials and their earth abundance10.1007/s11664-011-1839-y ↗
20. Abinitio determination of crystal structures of the thermoelectric material MgAgSb10.1103/PhysRevB.85.144120 ↗
21. High thermoelectric performance of MgAgSb-based materials10.1016/j.nanoen.2014.04.012 ↗
22. Study on thermoelectric performance by Na doping in nanostructured Mg1−xNaxAg0.97Sb0.9910.1016/j.nanoen.2014.11.027 ↗
23. Effect of Cu concentration on thermoelectric properties of nanostructured p-type MgAg0.97−xCuxSb0.9910.1016/j.actamat.2015.01.018 ↗
24. High thermoelectric conversion efficiency of MgAgSb-based material with hot-pressed contacts10.1039/C4EE02813A ↗
25. High Performance α-MgAgSb thermoelectric materials for low temperature power generation10.1021/cm5041826 ↗
26. n-type thermoelectric material Mg2Sn0.75Ge0.25 for high power generation10.1073/pnas.1424388112 ↗
27. Relationship between thermoelectric figure of merit and energy conversion efficiency10.1073/pnas.1510231112 ↗
28. Enhancement of thermoelectric figure-of-merit by a bulk nanostructuring approach10.1002/adfm.200901512 ↗
29. Advanced electron microscopy for thermoelectric materials10.1016/j.nanoen.2015.03.034 ↗
30. Zintl chemistry for designing high efficiency thermoelectric materials10.1021/cm901956r ↗
31. Remarkable enhancement in thermoelectric performance of BiCuSeO by Cu deficiencies10.1021/ja2091195 ↗
32. Dual-vacancies: an effective strategy realizing synergistic optimization of thermoelectric property in BiCuSeO10.1021/jacs.5b01863 ↗
33. Nonstoichiometry in the Zintl phase Yb1−δZn2Sb2 as a route to thermoelectric optimization10.1021/cm502588r ↗
34. High performance thermoelectrics from earth-abundant materials: enhanced figure of merit in PbS by second phase nanostructures10.1021/ja208658w ↗
35. Thermoelectric properties of Sr3GaSb3-a chain-forming Zintl compound10.1039/c2ee22378c ↗
36. Glass-like lattice thermal conductivity and high thermoelectric efficiency in Yb9Mn4.2Sb910.1039/C3TA14021K ↗