H2020Индивидуална стипендия2016–2018

HyTeChaN · Hydrothermal synthesis of ThermoElectric Chalcogenide-based Nanocomposites

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2016-10-01 → 2018-09-30
Финансиране от ЕС: 185 076 €
Участници: 1
Схема: MSCA-IF-EF-ST

Линиите свързват координатора с партньорите.

Накратко на български

Термоелектричните нанокомпозити, като AgBiSe2 и BiCuSeO, се изследват за превръщане на топлината в електричество. Това помага за възстановяване на топлинната енергия, загубена при индустриални процеси или в автомобилите, като се използват по-безопасни и достъпни материали.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Hydrothermal synthesis of ThermoElectric Chalcogenide-based Nanocomposites

The energy transition and the greenhouse gas mitigation is one of the greatest challenges of our society, and strong research efforts should be devoted to technologies that can contribute to the move toward a more sustainable future. Thermoelectric modules, that enable the direct conversion of heat into electrical power, constitute a useful tool toward this move, by allowing the recovery of heat lost in many industrial processes or in the automotive domain. The active parts of a thermoelectric module consist of a p-type and an n-type thermoelectric material. The conversion efficiency of the module grows when the so-called “figure or merit” of the materials grows. Historically, the best p- and n-type materials in the 250-650°C temperature range, relevant for large scale waste heat recovery, contained lead and tellurium, which precluded the large scale developments of thermoelectric applications (due to the toxicity of lead and the scarcity of tellurium). Therefore, a large research effort has been devoted to the development of new efficient materials, with constituting elements less toxic and more abundant than lead and tellurium. In the recent years, the host team had developed two new families of Pb- and Te-free thermoelectric materials, one of n-type (parent compound AgBiSe2) and one of p-type (BiCuSeO). Both of them exhibit good performances, and the second one has been recognized as one of the most promising thermoelectric material studied currently. The overall objectives of the scientific project were: - to control the structural phase transitions that occurs in n-type AgBiSe2 and preclude their use in conversion modules due to instability during thermal cycling, either by using alternative synthesis routes or chemical pressure induced by proper substitutions. - to improve the performances of p-type BiCuSeO by producing platelet grains by alternative synthesis routes or by making composites. These two objectives are mostly independent, and all progress obtained for any of them would constitute new advances towards their use in wide scale applications.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Thermoelectric modules enable the direct conversion of waste heat into electrical power and could therefore represent a powerful in the energy transition and the move towards a more sustainable society, if we can find efficient and non-toxic materials scalable at the industrial level. The host team has recently developed two promising families of materials, namely p-type BiCuSeO-based and n-type AgBiCh2-based materials, which are among the best lead-free materials in their temperature range. Further improvements of their performances would pave the way towards applications. In the past few years, nanostructuration has revealed itself a powerful tool for the enhancement of the thermoelectric materials performances. In that framework, the use of this technique to improve the performances of BiCuSeO-based and AgBiCh2-based materials appears appealing.Therefore, the main goal of this project is to use hydrothermal chemistry, an easily scalable synthesis process, in order to synthesize bulk pellets of BiCuSeO/graphene and AgBiCh2/graphene nanocomposites, with improved thermoelectric performances. Besides its scalable character, the use of hydrothermal synthesis has many advantages, including a very fine control of the materials size, morphology and composition. Besides synthesis, the project will include a precise characterization of the chemical composition, crystal structure and microstructure of the materials, as well as an optimization of their thermoelectric performances.Besides scientific research, several outreach activities will be implemented in order to make thermoelectricity better known by the public, including the design of demonstration kits that will be made freely available.

Оригинален текст от CORDIS (на английски).

Участници

UNIVERSITE PARIS-SACLAY · Gif-Sur-YvetteКоординаторФранция