This title appears in the Scientific Report : 2016 

A chemists view: Metal oxides with adaptive structures for thermoelectric applications
Kieslich, Gregor
Cerretti, Giacomo / Veremchuk, Igor / Panthöfer, Martin / Grin, Juri / Tremel, Wolfgang (Corresponding author) / Hermann, Raphael
Streumethoden; JCNS-2
JARA-FIT; JARA-FIT
Streumethoden; PGI-4
Physica status solidi / A, 213 (2016) 3, S. 808–823
Weinheim Wiley-VCH 2016
10.1002/pssa.201532702
Journal Article
Jülich Centre for Neutron Research (JCNS)
Materials and Processes for Energy and Transport Technologies
Quantum Condensed Matter: Magnetism, Superconductivity
Controlling Collective States
Controlling Collective States
Please use the identifier: http://dx.doi.org/10.1002/pssa.201532702 in citations.
Thermoelectric devices can help to tackle future challenges in the energy sector through the conversion of waste heat directly into usable electric energy. For a wide applicability low-cost materials with reasonable thermoelectric performances and cost-efficient preparation techniques are required. In this context metal oxides are an interesting class of materials because of their inherent high-temperature stability and relative high sustainability. Their thermoelectric performance, however, needs to be improved for wide application. Compounds with adaptive structures are a very interesting class of materials. A slight reduction of early transition metal oxides generates electrons as charge carriers and crystallographic shear planes as structure motif. The crystallographic shear planes lead to a reduction of intrinsic thermal conductivity. At the same time, the electronic transport properties can be tuned by the degree of reduction. So far only a few transition metal oxides with adaptive structures have been investigated with respect to their thermoelectric properties, leaving much room for improvement. This review gives an overview of thermoelectric oxides, highlights the structural aspects of the crystallographic shear planes and the resulting thermoelectric properties.