Thermal conductivity of thermoelectric clathrates

Bentien, Anders; Christensen, Mogens; Bryan, J. Daniel; Sanchez, Alvaro; Paschen, S.; Steglich, F.; Stucky, Galen D.; Iversen, Bo B.

doi:10.1103/physrevb.69.045107

Cited by 195 publications

(237 citation statements)

References 20 publications

Supporting

Mentioning

216

Contrasting

Unclassified

Order By: Relevance

“…5). This is in contrast to the glasslike temperature dependence observed in p-type Ba 8 Ga 16 Ge 30 , 8,9 but is consistent with transport properties reported for other ternary clathrate I compounds containing framework vacancies. 10 …”

Section: Resultscontrasting

confidence: 55%

“…Electrical resistivity and thermopower of Ba 8 Ge 43 h 3 at low temperatures are depicted in Fig. 3a, b, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…The interaction between cage atoms and the host framework is a key property for understanding the thermoelectric properties of these compounds. So far, the highest thermoelectric figure of merit for a clathrate compound was reported for Ba 8 Ga 16 Ge 30 with ZT % 1.35 at 900 K. 2 In comparison, the binary archetype Ba 8 Ge 43 h 3 3,4 displays only very low ZT values, e.g., 0.06 at 693 K. 5 However, complete characterization of Ba 8 Ge 43 h 3 is important to identify the most promising clathrates among the variety of possible compositions.…”

Section: Introductionmentioning

confidence: 99%

“…Ba 8 Ge 43 h 3 was originally predicted to show metallic behavior according to the 8-N rule, 3,4 because only 12 of the 16 valence electrons related to the Ba atoms are necessary to satisfy the electronic requirements of 12 Ge anions surrounding three vacancies. Experimentally, it was found that the compound shows semiconducting behavior.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Thermoelectric Properties of the Clathrate I Ba8Ge43□3

Candolfi

Aydemir

Baitinger

et al. 2009

Journal of Elec Materi

Self Cite

View full text Add to dashboard Cite

The clathrate I Ba 8 Ge 43 h 3 [space group Ia " 3d, no. 230, a = 21.307(1) Å ] has been synthesized as a single phase and characterized by x-ray powder diffraction and metallographic analysis. Electrical and thermal transport measurements have been performed in the temperature range of 5 K to 673 K. Ba 8 Ge 43 h 3 displays the electrical resistivity of a poor metal at low temperatures, with semiconducting-like behavior appearing above 300 K.

show abstract

Section: Resultscontrasting

confidence: 55%

“…Electrical resistivity and thermopower of Ba 8 Ge 43 h 3 at low temperatures are depicted in Fig. 3a, b, respectively.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Thermoelectric Properties of the Clathrate I Ba8Ge43□3

Candolfi

Aydemir

Baitinger

et al. 2009

Journal of Elec Materi

Self Cite

View full text Add to dashboard Cite

show abstract

“…[56][57][58][59][60] ChemSusChem 2010, 3, 44 -58 2010 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim www.chemsuschem.org trical conductivity typical of crystalline materials and, at the same time, a very low lattice thermal conductivity typical of an amorphous solid (so-called "electron-crystal, phonon-glass" materials). [62][63][64][65] The temperature dependence of ZT values of two n-type materials that belong to skutterudite (Yb 0.2 Co 4 Sb 12 ) and clathrate (Ba 8 Ga 16 Ge 30 ) families of inclusion compounds are presented in Figure 9.…”

Section: Thermoelectric Materialsmentioning

confidence: 99%

Functional Materials for Sustainable Energy Technologies: Four Case Studies

Кузнецов

Edwards

2010

ChemSusChem

View full text Add to dashboard Cite

The critical topic of energy and the environment has rarely had such a high profile, nor have the associated materials challenges been more exciting. The subject of functional materials for sustainable energy technologies is demanding and recognized as a top priority in providing many of the key underpinning technological solutions for a sustainable energy future. Energy generation, consumption, storage, and supply security will continue to be major drivers for this subject. There exists, in particular, an urgent need for new functional materials for next‐generation energy conversion and storage systems. Many limitations on the performances and costs of these systems are mainly due to the materials′ intrinsic performance. We highlight four areas of activity where functional materials are already a significant element of world‐wide research efforts. These four areas are transparent conducting oxides, solar energy materials for converting solar radiation into electricity and chemical fuels, materials for thermoelectric energy conversion, and hydrogen storage materials. We outline recent advances in the development of these classes of energy materials, major factors limiting their intrinsic functional performance, and potential ways to overcome these limitations.

show abstract