High thermoelectric performance of reduced lanthanide molybdenum oxides densified by spark plasma sintering

Xu, Jianxiao; Sonne, Monica; Yanangiya, Shun-ichi; Nong, Ngo Van; Pryds, Nini; Nygren, Mats; Kleinke, Holger

doi:10.1016/j.jallcom.2010.03.201

Cited by 7 publications

(5 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reproduced with permission. [183] Copyright 2010, Elsevier. d) Magnetic hysteresis loops (M-H) at room temperature of the oxygen annealed (black line) as-prepared (red line), vacuum annealed (blue line -in which the most oxygen vacancy has been induced) in molybdenum oxide nanofibers.…”

Section: Discussionmentioning

confidence: 99%

“…[184] As presented in Section 2.7, semiconductors such as LnMo 8 O 14 (Ln = La, Ce, Nd and Sm) with narrow bandgaps are also potential TE materials. [183] NdMo 8 O 14 exhibited the best performance with the maximum power factor of 177 μW mK-2 at ≈1000 K (Figure 19c). However, the observed values are still too low for actual TE applications.…”

Section: Pseudocapacitorsmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Molybdenum Oxides – From Fundamentals to Functionality

et al. 2017

View full text Add to dashboard Cite

The properties and applications of molybdenum oxides are reviewed in depth. Molybdenum is found in various oxide stoichiometries, which have been employed for different high-value research and commercial applications. The great chemical and physical characteristics of molybdenum oxides make them versatile and highly tunable for incorporation in optical, electronic, catalytic, bio, and energy systems. Variations in the oxidation states allow manipulation of the crystal structure, morphology, oxygen vacancies, and dopants, to control and engineer electronic states. Despite this overwhelming functionality and potential, a definitive resource on molybdenum oxide is still unavailable. The aim here is to provide such a resource, while presenting an insightful outlook into future prospective applications for molybdenum oxides.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Pseudocapacitorsmentioning

confidence: 99%

See 1 more Smart Citation

Molybdenum Oxides – From Fundamentals to Functionality

et al. 2017

View full text Add to dashboard Cite

show abstract

“…13a shows the TPFs of the four composites at different temperatures. It is seen that NdMo8O18 exhibits a peak TPF and ZT of 177 μW/m.K 2 and 0.1, respectively, at 1000 K. The κ of the composite has been reported to be 3.19 W/m.K at 322 K, which drops to 2 W/m.K at 1164 K [308,309]. It is evident that the TPF is certainly large enough to make these molybdenum oxide composites promising for high temperature energy scavenging applications.…”

Section: Te Properties Of Non-stoichiometric Doped and Composite Moo Xmentioning

confidence: 99%

Transition metal oxides – Thermoelectric properties

Walia

Balendhran

Nili

et al. 2013

Progress in Materials Science

312

199

View full text Add to dashboard Cite

Transition metal oxides (TMOs) are a fascinating class of materials due to their wide ranging electronic, chemical and mechanical properties. Additionally, they are gaining increasing attention for their thermoelectric (TE) properties due to their high temperature stability, tunable electronic and phonon transport properties and well established synthesis techniques. In this article, we review TE TMOs at cryogenic, ambient and high temperatures. An overview of strategies used for morphological, composting and stoichiometric tuning of their key TE parameters is presented. This article also provides an outlook on the current and future prospects of implementing TMOs for a wide range of TE applications.

show abstract

“…In order to improve the TE performance of Ca 3 Co 4 O 9 system, the element substitution is usually used. So far, in Ca 3 Co 4 O 9 system, the selected doped elements are mainly focused on the transition metal ones (Ti, Cr, Mn, Fe, Ni, Cu, Zn, Mo, Rh, W, Re, Ir, and Pt) at Co‐sites and the alkali/alkaline‐earth/rare‐earth metal ones (Na, Sr, La ‐ Nd, Sm ‐ Er, Yb, Lu, and Y) at Ca‐sites. Compared to these traditional ideas, the substitutions of the alkali/alkaline‐earth/rare‐earth metal elements at Co‐sites or the transition metal ones at Ca‐sites have not yet been investigated systematically in this system due to much large difference between their ionic radii.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Thermoelectric Performance Induced by Cr Doping at Ca‐Sites in Ca₃Co₄O₉ System

et al. 2014

View full text Add to dashboard Cite

Thermoelectric performance of Ca3Co4O9 system has been enhanced through the misplaced substitution with Cr doping at Ca‐sites. The study of Cr doping at Co‐sites has also been performed for comparing. Base on the analysis of the structural data, we conclude that the doped Cr ions should be in the form of Cr+6, and enter into Ca‐sites of Ca2CoO3 layers in Ca3−xCrxCo4O9 lattice and Co‐sites of CoO2 layers in Ca3Co3.90Cr0.10O9 lattice, respectively. As Cr ions are doped into Ca‐sites in Ca3−xCrxCo4O9 lattice, both resistivity and thermopower increase obviously, while thermal conductivity decreases. Among all samples, Ca2.95Cr0.05Co4O9 shows the maximum ZT value, which is enhanced by 12% than that of Ca3Co4O9. The results show that the misplaced substitution with a proper Cr doping at Ca‐sites is beneficial to the enhancement of the thermoelectric performance in Ca3Co4O9 system compared to the traditional idea: Cr doping at Co‐sites, which is suggested to originate from the combined action of the carrier concentration, the electronic correlation, and the lattice disharmony.

show abstract

High thermoelectric performance of reduced lanthanide molybdenum oxides densified by spark plasma sintering

Cited by 7 publications

References 36 publications

Molybdenum Oxides – From Fundamentals to Functionality

Molybdenum Oxides – From Fundamentals to Functionality

Transition metal oxides – Thermoelectric properties

Enhanced Thermoelectric Performance Induced by Cr Doping at Ca‐Sites in Ca₃Co₄O₉ System

Contact Info

Product

Resources

About

High thermoelectric performance of reduced lanthanide molybdenum oxides densified by spark plasma sintering

Cited by 7 publications

References 36 publications

Molybdenum Oxides – From Fundamentals to Functionality

Molybdenum Oxides – From Fundamentals to Functionality

Transition metal oxides – Thermoelectric properties

Enhanced Thermoelectric Performance Induced by Cr Doping at Ca‐Sites in Ca3Co4O9 System

Contact Info

Product

Resources

About

Enhanced Thermoelectric Performance Induced by Cr Doping at Ca‐Sites in Ca₃Co₄O₉ System