Colossal thermoelectric power factor in K 7/8RhO 2

Yasir Saeed; Nirpendra Singh; Udo Schwingenschlögl

doi:10.1002/adfm.201103106

Colossal thermoelectric power factor in K _7/8RhO ₂

Yasir Saeed, Nirpendra Singh, Udo Schwingenschlögl

Physics

King Abdullah University of Science and Technology

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

The thermoelectric properties of the layered oxides KxRhO ₂ (x = 1/2 and 7/8) are investigated by means of the electronic structure, as determined by ab inito calculations and Boltzmann transport theory. In general, the electronic structure of K _xRhO ₂ is similar to Na _xCoO ₂, but with strongly enhanced transport. K _7/8RhO ₂ exceeds the ultrahigh power factor of Na _0.88CoO ₂ reported previously by more than 50%. The roles of the cation concentration and the lattice parameters in the transport properties in this class of compounds are explained.

Original language	British English
Pages (from-to)	2792-2796
Number of pages	5
Journal	Advanced Functional Materials
Volume	22
Issue number	13
DOIs	https://doi.org/10.1002/adfm.201103106
State	Published - 10 Jul 2012

Keywords

density functional theory
layered oxides
power factors
transport properties

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10.1002/adfm.201103106

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abstract = "The thermoelectric properties of the layered oxides KxRhO 2 (x = 1/2 and 7/8) are investigated by means of the electronic structure, as determined by ab inito calculations and Boltzmann transport theory. In general, the electronic structure of K xRhO 2 is similar to Na xCoO 2, but with strongly enhanced transport. K 7/8RhO 2 exceeds the ultrahigh power factor of Na 0.88CoO 2 reported previously by more than 50%. The roles of the cation concentration and the lattice parameters in the transport properties in this class of compounds are explained.",

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author = "Yasir Saeed and Nirpendra Singh and Udo Schwingenschl{\"o}gl",

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AU - Singh, Nirpendra

AU - Schwingenschlögl, Udo

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Y1 - 2012/7/10

N2 - The thermoelectric properties of the layered oxides KxRhO 2 (x = 1/2 and 7/8) are investigated by means of the electronic structure, as determined by ab inito calculations and Boltzmann transport theory. In general, the electronic structure of K xRhO 2 is similar to Na xCoO 2, but with strongly enhanced transport. K 7/8RhO 2 exceeds the ultrahigh power factor of Na 0.88CoO 2 reported previously by more than 50%. The roles of the cation concentration and the lattice parameters in the transport properties in this class of compounds are explained.

AB - The thermoelectric properties of the layered oxides KxRhO 2 (x = 1/2 and 7/8) are investigated by means of the electronic structure, as determined by ab inito calculations and Boltzmann transport theory. In general, the electronic structure of K xRhO 2 is similar to Na xCoO 2, but with strongly enhanced transport. K 7/8RhO 2 exceeds the ultrahigh power factor of Na 0.88CoO 2 reported previously by more than 50%. The roles of the cation concentration and the lattice parameters in the transport properties in this class of compounds are explained.

KW - density functional theory

KW - layered oxides

KW - power factors

KW - transport properties

UR - http://www.scopus.com/inward/record.url?scp=84863692490&partnerID=8YFLogxK

U2 - 10.1002/adfm.201103106

DO - 10.1002/adfm.201103106

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VL - 22

SP - 2792

EP - 2796

JO - Advanced Functional Materials

JF - Advanced Functional Materials

IS - 13

ER -

Colossal thermoelectric power factor in K _7/8RhO ₂

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