Thermoelectric Materials with Skutterudite Structure: New Results
Skutterudite semiconductors possess attractive transport properties and have a good potential for.
Skutterudite Structure↗
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Thermoelectric devices based on materials with filled skutterudite structures
A class of thermoelectric compounds based on the skutterudite structure with heavy filling atoms in the empty octants and substituting transition metals and main-group atoms. High Seebeck coefficients and low thermal conductivities are achieved in combination with large electrical conductivities in these filled skutterudites for large ZT values. Substituting and filling methods are disclosed to synthesize skutterudite compositions with desired thermoelectric properties. A melting and/or sintering process in combination with powder metallurgy techniques is used to fabricate these new materials.
Fleurial, Jean-Pierre↗
Thermoelectric materials with filled skutterudite structure for thermoelectric devices
A class of thermoelectric compounds based on the skutterudite structure with heavy filling atoms in the empty octants and substituting transition metals and main-group atoms. High Seebeck coefficients and low thermal conductivities are achieved in combination with large electrical conductivities in these filled skutterudites for large ZT values. Substituting and filling methods are disclosed to synthesize skutterudite compositions with desired thermoelectric properties. A melting and/or sintering process in combination with powder metallurgy techniques is used to fabricate these new materials.
Fleurial, Jean-Pierre↗
Thermoelectric materials with filled skutterudite structure for thermoelectric devices
A class of thermoelectric compounds based on the skutterudite structure with heavy filling atoms in the empty octants and substituting transition metals and main-group atoms. High Seebeck coefficients and low thermal conductivities are achieved in combination with large electrical conductivities in these filled skutterudites for large ZT values. Substituting and filling methods are disclosed to synthesize skutterudite compositions with desired thermoelectric properties. A melting and/or sintering process in combination with powder metallurgy techniques is used to fabricate these new materials.
Fleurial, Jean-Pierre↗
Thermoelectric Materials With the Skutterudite Structure: New Results
New experimental findings on semiconductors with the relatively complex 32 atom unit cell skutterudite crystal structure show that these materials possess attractive transport properties and have a good potential for achieving ZT values larger than for state-of- the-art thermoelectric materials. An overview of recent results is provided, and current approaches to experimentally achieving high ZT in skutterudite materials are discussed.
thermoelectrics skutterudites↗
Solid Solutions Formation: Improving the Thermoelectric Properties of Skutterudites
Materials with skutterudite structure have been known for a long time. Some of them are semiconductors. A typical skutterudite is CoSb(sub 3) and its thermoelectric properties were partially studied in the 1960's. Recently, it has been discovered that many skutterudite compounds are thermoelectrics with promising future.
skutterudite skutterudite structure thermoelectric↗
Bridgman-solution Crystal Growth and Characterization of Skutterudite Compounds CoSb(sub 3) and RhSb(sub 3)
Several semiconducting compounds with the skutterudite structure are attractive materials for thermoelectric and electronic applications.
semiconducting compounds skutterudite structure tw↗
Preparation and Characterization of the Skutterudite-Related Phase Ru0.5Pd0.5 Sb3
A new skutterudite phase Ru0.5Pd0.5 Sb3 was prepared. It adds to the many materials with the skutterudite structure that have shown a good potential for thermoelectric applications. Single- phase polycrystalline samples were prepared and characterized by x-ray analysis, electron probe microanalysis, density, sound velocity, thermal expansion coefficient, and differential thermal analysis measurements.
ternary↗
Skutterudites: a New Class of Promising Thermoelectric Materials
Based on literature data and experimental findings at JPL, semiconductors with the skutterudite structure TPn(sub 3) (where T is a transition metal element such as Co, Rh, Ir, Ni and Pd, and Pn is a pnicogen element such as P, As and Sb) possess attractive characteristics and show a good potential for high ZT values. the high degree of covalency results in high mobility and low electrical resistivity values while a relatively complex 32-atom unit cell results in a reasonably low thermal conductivity.
skutterudites thermoelectric material↗
Materials Data on Sb3Ir by Materials Project
IrSb3 is Skutterudite structured and crystallizes in the cubic Im-3 space group. The structure is three-dimensional. Ir3+ is bonded to six equivalent Sb1- atoms to form corner-sharing IrSb6 octahedra. The corner-sharing octahedral tilt angles are 55°. All Ir–Sb bond lengths are 2.65 Å. Sb1- is bonded in a 2-coordinate geometry to two equivalent Ir3+ and two equivalent Sb1- atoms. There are one shorter (2.89 Å) and one longer (3.01 Å) Sb–Sb bond lengths.
36 MATERIALS SCIENCE↗
Materials Data on CoSb3 by Materials Project
CoSb3 is Skutterudite structured and crystallizes in the cubic Im-3 space group. The structure is three-dimensional. Co2+ is bonded to six equivalent Sb+0.67- atoms to form corner-sharing CoSb6 octahedra. The corner-sharing octahedral tilt angles are 52°. All Co–Sb bond lengths are 2.54 Å. Sb+0.67- is bonded in a 2-coordinate geometry to two equivalent Co2+ atoms.
36 MATERIALS SCIENCE↗
Materials Data on P3Ir by Materials Project
IrP3 is Skutterudite structured and crystallizes in the cubic Im-3 space group. The structure is three-dimensional. Ir3+ is bonded to six equivalent P1- atoms to form IrP6 octahedra that share corners with six equivalent IrP6 octahedra and corners with twelve equivalent PP2Ir2 tetrahedra. The corner-sharing octahedral tilt angles are 63°. All Ir–P bond lengths are 2.37 Å. P1- is bonded to two equivalent Ir3+ and two equivalent P1- atoms to form PP2Ir2 tetrahedra that share corners with four equivalent IrP6 octahedra, corners with ten equivalent PP2Ir2 tetrahedra, and an edgeedge with one PP2Ir2 tetrahedra. The corner-sharing octahedra tilt angles range from 68–69°. There are one shorter (2.25 Å) and one longer (2.35 Å) P–P bond lengths.
36 MATERIALS SCIENCE↗
Materials Data on CoP3 by Materials Project
CoP3 is Skutterudite structured and crystallizes in the cubic Im-3 space group. The structure is three-dimensional. Co1+ is bonded to six equivalent P+0.33- atoms to form CoP6 octahedra that share corners with six equivalent CoP6 octahedra and corners with twelve equivalent PCo2P2 tetrahedra. The corner-sharing octahedral tilt angles are 59°. All Co–P bond lengths are 2.22 Å. P+0.33- is bonded to two equivalent Co1+ and two equivalent P+0.33- atoms to form distorted PCo2P2 tetrahedra that share corners with four equivalent CoP6 octahedra, corners with ten equivalent PCo2P2 tetrahedra, and an edgeedge with one PCo2P2 tetrahedra. The corner-sharing octahedra tilt angles range from 69–70°. There are one shorter (2.26 Å) and one longer (2.35 Å) P–P bond lengths.
36 MATERIALS SCIENCE↗
Materials Data on RhN3 by Materials Project
RhN3 is Skutterudite structured and crystallizes in the cubic Im-3 space group. The structure is three-dimensional. Rh3+ is bonded to six equivalent N1- atoms to form RhN6 octahedra that share corners with six equivalent RhN6 octahedra and corners with twelve equivalent NRh2N2 tetrahedra. The corner-sharing octahedral tilt angles are 75°. All Rh–N bond lengths are 2.09 Å. N1- is bonded to two equivalent Rh3+ and two equivalent N1- atoms to form distorted NRh2N2 tetrahedra that share corners with four equivalent RhN6 octahedra, corners with ten equivalent NRh2N2 tetrahedra, and an edgeedge with one NRh2N2 tetrahedra. The corner-sharing octahedra tilt angles range from 64–65°. There is one shorter (1.47 Å) and one longer (1.54 Å) N–N bond length.
36 MATERIALS SCIENCE↗
Materials Data on CoN3 by Materials Project
CoN3 is Skutterudite structured and crystallizes in the cubic Im-3 space group. The structure is three-dimensional. Co3+ is bonded to six equivalent N1- atoms to form CoN6 octahedra that share corners with six equivalent CoN6 octahedra and corners with twelve equivalent NCo2N2 tetrahedra. The corner-sharing octahedral tilt angles are 72°. All Co–N bond lengths are 1.94 Å. N1- is bonded to two equivalent Co3+ and two equivalent N1- atoms to form distorted NCo2N2 tetrahedra that share corners with four equivalent CoN6 octahedra, corners with ten equivalent NCo2N2 tetrahedra, and an edgeedge with one NCo2N2 tetrahedra. The corner-sharing octahedra tilt angles range from 64–66°. There is one shorter (1.45 Å) and one longer (1.56 Å) N–N bond length.
36 MATERIALS SCIENCE↗
Materials Data on NiP3 by Materials Project
NiP3 is Skutterudite structured and crystallizes in the cubic Im-3 space group. The structure is three-dimensional. Ni1+ is bonded to six equivalent P+0.33- atoms to form NiP6 octahedra that share corners with six equivalent NiP6 octahedra and corners with twelve equivalent PNi2P2 tetrahedra. The corner-sharing octahedral tilt angles are 62°. All Ni–P bond lengths are 2.28 Å. P+0.33- is bonded to two equivalent Ni1+ and two equivalent P+0.33- atoms to form distorted PNi2P2 tetrahedra that share corners with four equivalent NiP6 octahedra, corners with ten equivalent PNi2P2 tetrahedra, and an edgeedge with one PNi2P2 tetrahedra. The corner-sharing octahedra tilt angles range from 68–69°. There are one shorter (2.24 Å) and one longer (2.25 Å) P–P bond lengths.
36 MATERIALS SCIENCE↗
Materials Data on Sb3Rh by Materials Project
RhSb3 is Skutterudite structured and crystallizes in the cubic Im-3 space group. The structure is three-dimensional. Rh3+ is bonded to six equivalent Sb1- atoms to form corner-sharing RhSb6 octahedra. The corner-sharing octahedral tilt angles are 55°. All Rh–Sb bond lengths are 2.65 Å. Sb1- is bonded in a distorted bent 120 degrees geometry to two equivalent Rh3+ and two equivalent Sb1- atoms. There are one shorter (2.91 Å) and one longer (3.00 Å) Sb–Sb bond lengths.
36 MATERIALS SCIENCE↗
Materials Data on CoAs3 by Materials Project
CoAs3 is Skutterudite structured and crystallizes in the cubic Im-3 space group. The structure is three-dimensional. Co1+ is bonded to six equivalent As+0.33- atoms to form corner-sharing CoAs6 octahedra. The corner-sharing octahedral tilt angles are 56°. All Co–As bond lengths are 2.35 Å. As+0.33- is bonded in a distorted bent 120 degrees geometry to two equivalent Co1+ and two equivalent As+0.33- atoms. There are one shorter (2.51 Å) and one longer (2.63 Å) As–As bond lengths.
36 MATERIALS SCIENCE↗