Structure and Thermoelectric Properties of New Quaternary Tin and Lead Bismuth Selenides, K1+xM4-2xBi7+xSe15 (M = Sn, Pb) and K1+xSn5-xBi11+xSe22

ABSTRACTWe present the structure and thermoelectric properties of the new quaternary selenides K1+xM4–2xBi7+xSe15 (M = Sn, Pb) and K1-xSn5-xBi11+xSe22. The compounds K1+xM4-2xBi7+xSe15 (M= Sn, Pb) crystallize isostructural to A1+xPb4-2xSb7+xSe15 with A = K, Rb, while K1-xSn5-xBi11+xSe22 reveals a new structure type. In both structure types fragments of the Bi2Te3-type and the NaCl-type are connected to a three-dimensional anionic framework with K+ ions filled tunnels. The two structures vary by the size of the NaCl-type rods and are closely related to β-K2Bi8Se13 and K2.5Bi8.5Se14. The thermoelectric properties of K1+xM4-2xBi7+xSe15 (M = Sn, Pb) and K1-xSn5-xBi11+xSe22 were explored on single crystal and ingot samples. These compounds are narrow gap semiconductors and show n-type behavior with moderate Seebeck coefficients. They have very low thermal conductivity due to an extensive disorder of the metal atoms and possible “rattling” K+ ions.

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NewM+,M3+-arsenates – the framework structures of AgM3+(HAsO4)2(M3+= Al, Ga) andM+GaAs2O7(M+= Na, Ag)

Acta Crystallographica Section E Crystallographic Communications ◽

10.1107/s2056989017005631 ◽

2017 ◽

Vol 73 (5) ◽

pp. 785-790 ◽

Cited By ~ 4

Author(s):

Karolina Schwendtner ◽

Uwe Kolitsch

Keyword(s):

Hydrogen Bonds ◽

Single Crystal ◽

Diffraction Data ◽

Room Temperature ◽

Three Dimensional ◽

Structure Type ◽

X Ray Diffraction ◽

X Ray ◽

Donor Acceptor ◽

Anionic Framework

The crystal structures of hydrothermally synthesized silver(I) aluminium bis[hydrogen arsenate(V)], AgAl(HAsO4)2, silver(I) gallium bis[hydrogen arsenate(V)], AgGa(HAsO4)2, silver gallium diarsenate(V), AgGaAs2O7, and sodium gallium diarsenate(V), NaGaAs2O7, were determined from single-crystal X-ray diffraction data collected at room temperature. The first two compounds are representatives of the MCV-3 structure type known for KSc(HAsO4)2, which is characterized by a three-dimensional anionic framework of corner-sharing alternatingM3+O6octahedra (M= Al, Ga) and singly protonated AsO4tetrahedra. Intersecting channels parallel to [101] and [110] host the Ag+cations, which are positionally disordered in the Ga compound, but not in the Al compound. The hydrogen bonds are relatively strong, with O...O donor–acceptor distances of 2.6262 (17) and 2.6240 (19) Å for the Al and Ga compounds, respectively. The two diarsenate compounds are representatives of the NaAlAs2O7structure type, characterized by an anionic framework topology built ofM3+O6octahedra (M= Al, Ga) sharing corners with diarsenate groups, andM+cations (M= Ag) hosted in the voids of the framework. Both structures are characterized by a staggered conformation of the As2O7groups.

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Thermoelectric Properties of Cr3S4-Type Selenides

MRS Proceedings ◽

10.1557/proc-545-333 ◽

1998 ◽

Vol 545 ◽

Cited By ~ 9

Author(s):

G. Jeffrey Snyder ◽

T. Caillat ◽

J. -P. Fleurial

Keyword(s):

Thermal Conductivity ◽

Electrical Resistivity ◽

Seebeck Coefficient ◽

Thermoelectric Properties ◽

Lattice Thermal Conductivity ◽

Structure Type ◽

Seebeck Coefficients

AbstractSeveral compounds with the Cr3S4 structure type have been studied for their thermoelectric properties. All exhibit low lattice thermal conductivity of about 15 mW/cmK, independent of temperature. Many of the compounds, such as Co3Se4, Ni3Se4, Fe3Se4, Ti3Se4, FeNi2Se4, and FeCo2Se4, are metals with relatively low electrical resistivity and Seebeck coefficient. The Cr containing compounds, such as Cr3Se4, NiCr2Se4, CoCr2Se4, and FeCr2Se4, have the largest Seebeck coefficients and highest resistivity. thermoelectric applications is FeCr2Se4.

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Strukturvarianten des MgCu2-Typs: Die Verbindungen Mg2Ni3P und Mg2Ni3As / Variants of the MgCu2 Type: The Compounds Mg2Ni3P and Mg2Ni3As

Zeitschrift für Naturforschung B ◽

10.1515/znb-1992-1002 ◽

1992 ◽

Vol 47 (10) ◽

pp. 1351-1354 ◽

Cited By ~ 7

Author(s):

Viktor Keimes ◽

Albrecht Mewis

Keyword(s):

Single Crystal ◽

Homogeneity Range ◽

Hexagonal Lattice ◽

Structure Type ◽

Type Structure ◽

X Ray ◽

Lattice Constants ◽

Metal Atoms ◽

Rhombohedral Symmetry

The compounds Mg2Ni3P and Mg2Ni3As were prepared by heating the elements. Their structures have been determined from single-crystal X-ray data. The structure of the phosphide is a rhombohedral ternary variant of the cubic Laves structure type MgCu2 (R 3̄ m; hexagonal lattice constants: a = 4.971(0) Å, c = 10.961(2) Å). The ordered substitution of one quarter of the metal atoms by phosphorus and the resulting shorter distances are responsible for the rhombohedral symmetry.The arsenide crystallizes in the MgCu2 type structure (Fd 3 m; a = 6.891(1)A, composition Mg2Ni3As) with a statistic distribution of the Ni and As atoms; the relevant homogeneity range extends from Mg2Ni2.9As1.1 to Mg2Ni3.5As0.5.

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Thermoelectric properties of PEDOT:PSS aerogel secondary-doped in supercritical CO2 atmosphere with low thermal conductivity

Polymer ◽

10.1016/j.polymer.2020.122912 ◽

2020 ◽

Vol 206 ◽

pp. 122912

Author(s):

Naoya Yanagishima ◽

Shinji Kanehashi ◽

Hiromu Saito ◽

Kenji Ogino ◽

Takeshi Shimomura

Keyword(s):

Thermal Conductivity ◽

Thermoelectric Properties ◽

Supercritical Co2 ◽

Low Thermal Conductivity ◽

Co2 Atmosphere

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Simultaneous enhancements in the Seebeck coefficient and conductivity of PEDOT:PSS by blending ferroelectric BaTiO3 nanoparticles

Journal of Materials Chemistry A ◽

10.1039/d1ta04235a ◽

2021 ◽

Author(s):

Chang'an Li ◽

Xin Guan ◽

Shizhong Yue ◽

Xi Zu Wang ◽

Jianmin Li ◽

...

Keyword(s):

Thermal Conductivity ◽

Seebeck Coefficient ◽

Thermoelectric Properties ◽

Low Cost ◽

Low Thermal Conductivity ◽

Low Toxicity ◽

Batio3 Nanoparticles

Thermoelectric polymers have attracted great attention because of their unique merits including low thermal conductivity, low cost, non- or low toxicity and high mechanical flexibility. However, their thermoelectric properties particularly...

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Ultra-low thermal conductivity and thermoelectric properties of polymer-mixed Bi2Te3 nanofibers by electrospinning

Journal of Materials Science ◽

10.1007/s10853-021-06750-z ◽

2022 ◽

Author(s):

Rizwan Akram ◽

Jan Sher Khan ◽

Zahid Qamar ◽

Saima Rafique ◽

Mozaffar Hussain ◽

...

Keyword(s):

Thermal Conductivity ◽

Thermoelectric Properties ◽

Low Thermal Conductivity

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Layered tellurides: stacking faults induce low thermal conductivity in the new In2Ge2Te6 and thermoelectric properties of related compounds

Journal of Materials Chemistry A ◽

10.1039/c7ta04810f ◽

2017 ◽

Vol 5 (36) ◽

pp. 19406-19415 ◽

Cited By ~ 10

Author(s):

Robin Lefèvre ◽

David Berthebaud ◽

Oleg Lebedev ◽

Olivier Pérez ◽

Célia Castro ◽

...

Keyword(s):

Thermal Conductivity ◽

High Temperature ◽

Thermoelectric Properties ◽

Stacking Faults ◽

Layered Compound ◽

Low Thermal Conductivity ◽

Related Compounds

A new ternary layered compound In2Ge2Te6, belonging to the hexatellurogermanate family has been synthesized from the reaction of appropriate amounts of the pure elements at high temperature in sealed silica tubes.

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Ultra-low thermal conductivity and high thermoelectric performance realized in a Cu3SbSe4 based system

Materials Chemistry Frontiers ◽

10.1039/d0qm00553c ◽

2021 ◽

Vol 5 (1) ◽

pp. 324-332

Author(s):

J. M. Li ◽

H. W. Ming ◽

B. L. Zhang ◽

C. J. Song ◽

L. Wang ◽

...

Keyword(s):

Thermal Conductivity ◽

Thermoelectric Properties ◽

Thermoelectric Performance ◽

Low Thermal Conductivity ◽

Sn Doping ◽

Temperature Range ◽

System P

Cu3SbSe4-Based materials were fabricated through Sn-doping and AgSb0.98Ge0.02Se2 incorporation and their thermoelectric properties were investigated in the temperature range from 300 K to 675 K.

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Influence of R3+ ion sizes on the thermoelectric properties of RBaCo4O7+δ ceramics

Modern Physics Letters B ◽

10.1142/s0217984915501547 ◽

2015 ◽

Vol 29 (26) ◽

pp. 1550154 ◽

Cited By ~ 4

Author(s):

F. Gao ◽

Q. L. He ◽

F. Wu ◽

D. L. Yang ◽

X. Hu ◽

...

Keyword(s):

Thermal Conductivity ◽

Electrical Resistivity ◽

Solid State ◽

Thermoelectric Properties ◽

Solid State Reaction ◽

Solid State Reaction Method ◽

Oxygen Adsorption ◽

Reaction Method ◽

Transition Phenomenon ◽

Seebeck Coefficients

The influence of [Formula: see text] ion sizes on the electrical resistivity, Seebeck coefficients, thermal conductivity and [Formula: see text] values of [Formula: see text] prepared by the solid-state reaction method was investigated from 373 K to 973 K. The electrical resistivity decreases with decreasing [Formula: see text] ion sizes. Both the electrical resistivity and the Seebeck coefficients have a transition at about 630 K. Especially, the transition phenomenon disappears gradually with decreasing [Formula: see text] ion sizes, and is attributed to the oxygen adsorption of [Formula: see text]. The [Formula: see text] values increase with rising temperature or decreasing [Formula: see text] ion sizes. The [Formula: see text] with the smallest [Formula: see text] size has the maximum [Formula: see text] value that reaches 0.1 at 973 K.

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