Poster (Scientific congresses and symposiums)
Development of gel processing way for the preparation of thermoelectric doped CaMnO3 n-type bulk materials
Combe, Emmanuel; Bastin, Frédérique; Thomassin, Jean-Michel et al.
2017Sol Gel 2017
 

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Keywords :
oxide; CaMnO3; sol gel processing
Abstract :
[en] Among the different no waste energy sources developed for answering the increase of worldwide energy consumption, thermoelectricity appears as a promising energy source. Thermoelectric materials possess the ability of directly converting a temperature difference into electricity (Seebeck effect) without producing greenhouse gases or using fossil fuels. High thermoelectric performances are linked to a high electrical conductivity, which is necessary for maximizing produced electrical energy delivered by the material, and a low thermal conductivity, which allow maintaining a high temperature difference at the two opposite faces of a thermoelectric material. In last decades, several oxide composition materials, which exhibit important natural oxidation resistance, have been identified as promising thermoelectric materials. As a n type semiconductor oxide, CaMnO3 doped phase is particularly promising for thermoelectric applications in air at high temperatures. However, for mass production of such material, a significant increase of thermoelectric performances is still required. In order to improve thermoelectric performances of polycrystalline bulk materials, optimizing sample’s microstructure must be achieved. For that purpose, development of innovative powder synthesis processing technique, such as sol gel process, is required. The aim of this study concerns the establishment of clear relationships between the use of sol gel processing ways on the grain size, chemical homogeneity and porosity of CaMnO3 doped bulk material and the resulting electrical and thermal transport performances.
Disciplines :
Chemistry
Author, co-author :
Combe, Emmanuel ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Bastin, Frédérique;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Thomassin, Jean-Michel ;  Université de Liège - ULiège > Département de chimie (sciences) > Centre d'études et de rech. sur les macromolécules (CERM)
Schrijnemakers, Audrey ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Vertruyen, Bénédicte  ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie inorganique structurale
Cloots, Rudi ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Funahashi, Ryoji;  National Institute of Advanced Industrial Science & Technology Osaka > Inorganic Functional Materials Research Institute
Boschini, Frédéric ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Language :
English
Title :
Development of gel processing way for the preparation of thermoelectric doped CaMnO3 n-type bulk materials
Publication date :
September 2017
Event name :
Sol Gel 2017
Event place :
Liège, Belgium
Event date :
3 - 8 September
Available on ORBi :
since 26 June 2018

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