Balancing the anionic framework polarity for enhanced thermoelectric performance in YbMg2Sb2 Zintl compounds
Source abstract
Abstract
1-2-2-type Zintl phase compound has aroused great interest for potential thermoelectric applications. However, YbMg 2 Sb 2 is seldom studied due to the very low electrical conductivity resulting from the large difference in the electronegativity between Mg and Sb. In this paper, we adjust the covalently bonded network of Mg Sb by replacing part of the Mg with Zn which has the electronegativity closer to that of Sb. The decreased polarity in the anionic framework offers more free distance for electrons for the enhanced Hall mobility and electrical conductivity. Together with the increased point defect and the decreased lattice thermal conductivity by introduction of Zn, the maximum ZT value of ∼0.8 at 773 K is achieved in YbMg 0.9 Zn 1.1 Sb 2 which is ∼100% enhancement compared with that of YbMg 2 Sb 2 .
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Research context
OpenAlex topics: Advanced Thermoelectric Materials and Devices · Thermal properties of materials · Physics of Superconductivity and Magnetism
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References (51)
Show source-provided references
1. High-performance flat-panel solar thermoelectric generators with high thermal concentration10.1038/nmat3013 ↗
2. Complex thermoelectric materials10.1038/nmat2090 ↗
3. Advances in thermoelectrics10.1080/00018732.2018.1551715 ↗
4. Yb14MnSb11: new high efficiency thermoelectric material for power generation10.1021/cm060261t ↗
5. Enhancing thermoelectric properties of a p-type Mg3Sb2-based Zintl phase compound by Pb substitution in the anionic framework10.1039/C4RA04889J ↗
6. Glass-like lattice thermal conductivity and high thermoelectric efficiency in Yb9Mn4.2Sb9
7. Mg3Sb2-based Zintl compound: a non-toxic, inexpensive and abundant thermoelectric material for power generation10.1039/c3ra40457a ↗
8. Higher thermoelectric performance of Zintl phases (Eu0.5Yb0.5)1-xCaxMg2Bi2 by band engineering and strain fluctuation10.1073/pnas.1608794113 ↗
9. Lithium doping to enhance thermoelectric performance of MgAgSb with weak electron-phonon coupling10.1002/aenm.201502269 ↗
10. Properties of single crystalline AZn2Sb2 (A = Ca,Eu,Yb)10.1063/1.3681817 ↗
11. Necking and notch strengthening in metallic glass with symmetric sharp-and-deep notches10.1038/srep10797 ↗
12. Zintl phase Yb1-xCaxCd2Sb2 with tunable thermoelectric properties induced by cation substitution10.1063/1.3327443 ↗
13. Compromise and synergy in high-efficiency thermoelectric materials10.1002/adma.201605884 ↗
14. Goldsmid · 2009
15. Neue Pnictide im CaAl2Si2-Type und dessen Existenzgebiet10.1515/znb-2002-1112 ↗
16. Recent progress and future challenges on thermoelectric Zintl materials10.1016/j.mtphys.2017.06.003 ↗
17. Spontaneously promoted carrier mobility and strengthened phonon scattering in p-type YbZn2Sb2 via a nanocompositing approach10.1016/j.nanoen.2017.11.019 ↗
18. Thermoelectric properties of materials near the band crossing line in Mg2Sn–Mg2Ge–Mg2Si system10.1016/j.actamat.2015.11.006 ↗
19. Deep defect level engineering: a strategy of optimizing the carrier concentration for high thermoelectric performance10.1039/C8EE00112J ↗
20. Tellurium doped n -type Zintl Zr3Ni3Sb4 thermoelectric materials: balance between carrier-scattering mechanism and bipolar effect10.1016/j.mtphys.2017.08.002 ↗
21. Zintl phase compounds AM2Sb2 (A=Ca, Sr, Ba, Eu, Yb; M=Zn, Cd) and their substitution variants: a class of potential thermoelectric materials10.1016/S1002-0721(12)60398-6 ↗
22. Zintl phases as thermoelectric materials: tuned transport properties of the compounds CaxYb1-xZn2Sb210.1002/adfm.200500043 ↗
23. Structure and physical properties of YbZn2Sb2 and YbCd2Sb210.30970/cma1.0062 ↗
24. Nonstoichiometry in the Zintl phase Yb1−δZn2Sb2 as a route to thermoelectric optimization10.1021/cm502588r ↗
25. High temperature thermoelectric properties of the solid-solution Zintl phase Eu11Cd6–xZnxSb1210.1021/acs.chemmater.5b01301 ↗
26. Enhancement of thermoelectric performance of phase pure Zintl compounds Ca1−xYbxZn2Sb2, Ca1−xEuxZn2Sb2, and Eu1−xYbxZn2Sb2 by mechanical alloying and hot pressing10.1016/j.nanoen.2016.04.023 ↗
27. Thermoelectric properties of Bi-based Zintl compounds Ca1−xYbxMg2Bi210.1039/C6TA00507A ↗
28. Valence band study of thermoelectric Zintl-phase SrZn2Sb2, and YbZn2Sb2: X-ray photoelectron spectroscopy and density functional theory
29. Defect-controlled electronic properties in AZn(2)Sb(2) Zintl phases10.1002/anie.201311125 ↗
30. Synthesis and high thermoelectric efficiency of Zintl phase YbCd2−xZnxSb210.1063/1.3040321 ↗
31. Electronic structure and transport in thermoelectric compounds AZn2Sb2(A = Sr, Ca, Yb, Eu)10.1039/B914172C ↗
32. Single parabolic band transport in p-type EuZn2Sb2 thermoelectrics10.1039/C7TA08869H ↗
33. Single parabolic band behavior of thermoelectric p-type Cu4Mn2Te410.1016/j.jallcom.2018.04.214 ↗
34. Orbital alignment for high performance thermoelectric YbCd2Sb2 alloys10.1021/acs.chemmater.8b02155 ↗
35. Lower limit to the thermal conductivity of disordered crystals10.1103/PhysRevB.46.6131 ↗
36. Model for lattice thermal conductivity at low temperatures
37. Measurement of a band-edge tail in the density of states of a photonic-crystal waveguide10.1103/PhysRevB.86.155154 ↗
38. Thermal conductivity and phonon scattering by magnetic impurities in CdTe
39. Strain field fluctuation effects on lattice thermal conductivity of ZrNiSn-based thermoelectric compounds10.1063/1.1783022 ↗
40. Fon · 2004
41. Beneficial contribution of alloy disorder to electron and phonon transport in half-heusler thermoelectric materials10.1002/adfm.201300663 ↗
42. Thermal and thermoelectric behavior of silicon-germanium quantum well structures10.1140/epjb/e2007-00311-4 ↗
43. Boundary scattering of phonons in solid solutions10.1016/0375-9601(68)90898-0 ↗
44. Effects of lanthanum substitution on thermoelectric properties of YbZn2Sb210.1007/s11664-016-4824-7 ↗
45. Thermoelectric properties of Zintl compound YbZn2Sb2 with Mn substitution in anionic framework10.1007/s11664-009-0667-9 ↗
46. Zintl phases for thermoelectric devices10.1039/b702266b ↗
47. New insight on tuning electrical transport properties via chalcogen doping in n-type Mg3Sb2-based thermoelectric materials10.1002/aenm.201702776 ↗
48. Thermoelectric properties of Mn-doped Mg–Sb single crystals10.1039/C4TA02386B ↗
49. Thermoelectric properties of Al-doped ZnO as a promising oxide material for high-temperature thermoelectric conversion10.1039/a602506d ↗
50. Thermoelectric performance of Mg2xCaxSi compounds
51. Enhancing the thermoelectric power factor with highly mismatched isoelectronic doping10.1103/PhysRevLett.104.016602 ↗